In *Body of Vision*, Michael Sinding connects Northrop Frye’s groundbreaking contributions to our understanding of the human imagination with cognitive poetics – the cutting-edge school of literary criticism that applies the principles of cognitive science to the interpretation of literary texts and contexts. Sinding undertakes this task through analyses of the interplay of metaphoric and narrative schemas in several forms of cultural mythology.

Sinding identifies the profound connections between cognitive views of language, literature, and culture and Frye’s views by exploring three related aspects of Frye’s work – meaning and thought, culture and society, and literary history. He investigates these connections through detailed studies of major cultural texts including Dante’s *Divine Comedy*, Hobbes’ *Leviathan*, Rousseau’s* Social Contract*, and Milton’s "Lycidas." By linking Frye’s classic studies to exciting recent approaches in the humanities and the cognitive revolution of the past few decades, *Body of Vision* casts Frye’s achievements in a fascinating new light.

Genre mixture is central to genre theory, in both literary and discourse studies. I characterize genres as multidimensional schemas integrating frames for action, situation, and discourse. Blending theory, as a model of the interaction of schemas, can clarify genre mixture and help to connect these fields. Laurence Sterne’s Tristram Shandy exemplifies Bakhtin’s view of the early novel cannibalizing extraliterary genres. Sterne framed his famous “Abuses of Conscience” sermon in four genre contexts: first, as the annual assize sermon at York Minster (1750); second, as a six-penny pamphlet (1750); third, integrated into Tristram Shandy (1760); fourth, in a collection of his sermons

(1760). These productions vary considerably in purpose, rhetorical situation, and audience response. Notably, Tristram and Sterne’s sermons were great but mixed successes. The clash of the pious genre in the profane story, and Sterne’s attribution of his sermons to his comic alter-ego Mr. Yorick, prompted both denunciation and praise. I compare the blending and framing involved in the novel with the other cases, to examine how different conceptual networks produce different categorizations, meanings, and responses. I reflect on principles of genre blending relating the sermon to the book as a whole.

},
address = {Austin, TX},
author = {Sinding, Michael},
booktitle = {Cognitive Literary Studies: Current Themes and New Directions},
editor = {Isabel Jaén, Julien Simon},
faupublication = {no},
isbn = {978-0-292-75442-3},
keywords = {Sterne; genre mixture; conceptual blending; sermon; novel},
month = {Jan},
pages = {145-61},
peerreviewed = {unknown},
publisher = {University of Texas Press},
series = {Cognitive Approaches to Literature and Culture},
title = {“‘{A} {Sermon} in the {Midst} of a {Smutty} {Tale}’: {Blending} in {Genres} of {Speech}, {Writing} and {Literature}.”},
url = {https://utpress.utexas.edu/books/jaecog},
year = {2012}
}
@article{faucris.109945484,
abstract = {We present a technique to calculate density profiles of a fluid close to a hard convex wall by arguing that its equilibrium density distribution depends only on the local curvatures of the wall. We perform a systematic expansion of the pro. le in powers of the curvatures and apply it to a hard-sphere fluid within the framework of density-functional theory (DFT). For large distances from the wall, the curvature expansion can be done analytically. Our approach can be generalized to systems with short-ranged fluid-fluid and wall-fluid interaction potentials, as long as intrinsic length scales remain small.},
author = {Mecke, Klaus and et al.},
author_hint = {Konig PM, Bryk P, Mecke K, Roth R},
doi = {10.1209/epl/i2004-10410-4},
faupublication = {no},
journal = {EPL - Europhysics Letters},
pages = {832-838},
peerreviewed = {Yes},
support_note = {Author relations incomplete. You may find additional data in field 'author_hint'},
title = {{Curvature} expansion of density profiles},
volume = {69},
year = {2005}
}
@article{faucris.110221144,
author = {Kapfer, Sebastian and Sporer, Susan and Hyde, Stephen T. and Mecke, Klaus and Schröder-Turk, Gerd},
faupublication = {yes},
journal = {Biophysical Journal},
month = {Jan},
pages = {571A-571A},
peerreviewed = {Yes},
title = {{Elastic} and {Morphological} {Properties} of {Porous} {Biomaterials}},
volume = {98},
year = {2010}
}
@article{faucris.108547604,
abstract = {By using Monte Carlo simulations, we study the complex phase behavior of charged-stabilized colloidal particles in a two-dimensional substrate potential with quasicrystalline decagonal symmetry. In the regime where the strengths of the substrate and colloidal pair potential are comparable, we identify a novel and unexpected quasicrystalline phase with pure 20-fold bond order and a disordered structure without any apparent rotational symmetry. Furthermore, we demonstrate how phasonic displacements in the substrate potential induce phasonic flips in the colloidal monolayer.},
author = {Schmiedeberg, Michael and Stark, Holger},
doi = {10.1103/PhysRevLett.101.218302},
faupublication = {no},
journal = {Physical Review Letters},
peerreviewed = {Yes},
title = {{Colloidal} {Ordering} on a {2D} {Quasicrystalline} {Substrate}},
volume = {101},
year = {2008}
}
@article{faucris.107597204,
abstract = {The classical Ising model on the frustrated three-dimensional (3D) swedenborgite lattice has disordered spin liquid ground states for all ratios of inter- and intraplanar couplings. Quantum fluctuations due to a transverse field give rise to several exotic phenomena. In the limit of weakly coupled kagome layers we find a 3D version of disorder by disorder degeneracy lifting. For large out-of-plane couplings one-dimensional macrospins are formed, which realize a disordered macrospin liquid phase on an emerging two-dimensional triangular lattice. We speculate about a possibly exotic version of quantum criticality that connects the polarized phase to the macrospin liquid.},
author = {Sikkenk, Tycho S. and Coester, Kris and Buhrandt, Stefan and Fritz, Lars and Schmidt, Kai Phillip},
doi = {10.1103/PhysRevB.95.060401},
faupublication = {yes},
journal = {Physical Review B},
pages = {060401},
peerreviewed = {Yes},
title = {{Emergence} of a 2d macro-spin liquid in a highly frustrated 3d quantum magnet},
volume = {95},
year = {2017}
}
@article{faucris.110370964,
abstract = {This article, as the first of three, aims at establishing the (time-dependent) Born-Oppenheimer approximation, in the sense of space adiabatic perturbation theory, for quantum systems constructed by techniques of the loop quantum gravity framework, especially the canonical formulation of the latter. The analysis presented here fits into a rather general framework and offers a solution to the problem of applying the usual Born-Oppenheimer ansatz for molecular (or structurally analogous) systems to more general quantum systems (e.g., spin-orbit models) by means of space adiabatic perturbation theory. The proposed solution is applied to a simple, finite dimensional model of interacting spin systems, which serves as a non-trivial, minimal model of the aforesaid problem. Furthermore, it is explained how the content of this article and its companion affect the possible extraction of quantum field theory on curved spacetime from loop quantum gravity (including matter fields). Published by AIP Publishing.},
author = {Stottmeister, Alexander and Thiemann, Thomas},
doi = {10.1063/1.4954228},
faupublication = {yes},
journal = {Journal of Mathematical Physics},
peerreviewed = {Yes},
title = {{Coherent} states, quantum gravity, and the {Born}-{Oppenheimer} approximation. {I}. {General} considerations},
volume = {57},
year = {2016}
}
@article{faucris.123190804,
abstract = {Nature provides impressive examples of chiral photonic crystals, with the notable example of the cubic so-called srs network (the label for the chiral degree-three network modeled on SrSi2) or gyroid structure realized in wing scales of several butterfly species. By a circular polarization analysis of the band structure of such networks, we demonstrate strong circular dichroism effects: The butterfly srs microstructure, of cubic I4(1)32 symmetry, shows significant circular dichroism for blue to ultraviolet light, that warrants a search for biological receptors sensitive to circular polarization. A derived synthetic structure based on four like-handed silicon srs nets exhibits a large circular polarization stop band of a width exceeding 30%. These findings offer design principles for chiral photonic devices.},
author = {Saba, Matthias and Thiel, M. and Turner, M. D. and Hyde, S. T. and Gu, Min and Grosse-Brauckmann, K. and Neshev, D. N. and Mecke, Klaus and Schröder-Turk, Gerd},
doi = {10.1103/PhysRevLett.106.103902},
faupublication = {yes},
journal = {Physical Review Letters},
peerreviewed = {Yes},
title = {{Circular} {Dichroism} in {Biological} {Photonic} {Crystals} and {Cubic} {Chiral} {Nets}},
volume = {106},
year = {2011}
}
@article{faucris.213300565,
abstract = {This paper presents the first examination of the potential for bicontinuous structures such as the gyroid structure to produce high efficiency solar cells based on conjugated polymers. The solar cell characteristics are predicted by a simulation model that shows how the morphology influences device performance through integration of all the processes occurring in organic photocells in a specified morphology. In bicontinuous phases, the surface defining the interface between the electron and hole transporting phases divides the volume into two disjoint subvolumes. Exciton loss is reduced because the interface at which charge separation occurs permeates the device so excitons have only a short distance to reach the interface. As each of the component phases is connected, charges will be able to reach the electrodes more easily. In simulations of the current--voltage characteristics of organic cells with gyroid, disordered blend and vertical rod (rods normal to the electrodes) morphologies, we find that gyroids have a lower than anticipated performance advantage over disordered blends, and that vertical rods are superior. These results are explored thoroughly, with geminate recombination, i.e. recombination of charges originating from the same exciton, identified as the primary source of loss. Thus, if an appropriate materials choice could reduce geminate recombination, gyroids show great promise for future research and applications.},
author = {Kimber, Robin G. E. and Walker, Alison B. and Schröder-Turk, Gerd and Cleaver, Douglas J.},
doi = {10.1039/b916340a},
faupublication = {yes},
journal = {Physical Chemistry Chemical Physics},
note = {EAM Import::2019-03-13},
pages = {844-851},
peerreviewed = {Yes},
title = {{Bicontinuous} minimal surface nanostructures for polymer blend solar cells},
volume = {12},
year = {2010}
}
@incollection{faucris.107347724,
abstract = {
An account of Cervantes’ "invention of the novel"--by mixing the genres of chivalric romance and picaresque tale--in terms of Blending Theory has several related aims, concerning issues in several related areas. First, regarding this text and its genre, I want to clarify Don Quixote’s structure, and its decisive impact on the novel genre. I will describe how Cervantes created a new genre template that later writers adopted by blending two known genres. Second, regarding literary genre theory, I want to clarify how genre blending shapes and refracts through various textual levels. I suggest that the narrative level of genre structure, the level of typical characters and actions, is the most fundamental one, as it has more influence on the structure of other levels than they have on it. This level is also fundamental in the unfolding of genre blends. Third, I hope this case study will also clarify the benefits and challenges of using Blending Theory to model cognitive structures and processes subtending discourse. Literary genre blending highlights the potential variability, complexity, and depth of ‘full meaning construction’ in discourse, and the case of Don Quixote suggests that it may be unrealistic to expect a simple answer to the question of exactly whose mental processes are being modeled in blending analyses. Finally, genre blending analyses offer a vantage on the cognitive study of culture, because they can clarify the structure and history of the worldviews that are combined and transformed in genre mixtures such as Cervantes’.

},
address = {Berlin},
author = {Sinding, Michael},
booktitle = {Blending and the Study of Narrative.},
editor = {Ralf Schneider, Marcus Hartner},
faupublication = {no},
isbn = {978-3-11-029123-0},
keywords = {Genre mixture; conceptual blending; Don Quixote; chivalric romance; picaresque; narrative structure},
pages = {147-71},
peerreviewed = {Yes},
publisher = {De Gruyter},
series = {Narratologia},
title = {“{Blending} in a baciyelmo: {Don} {Quixote}’s {Genre} {Blending} and the {Invention} of the {Novel}.”},
url = {https://www.degruyter.com/view/product/183776},
volume = {34},
year = {2012}
}
@inproceedings{faucris.124178164,
abstract = {Quasicrystals are structures that are not periodic but possess a long range positional order. They can have any rotational symmetry including those that are forbidden in periodic crystals. The symmetry is classified by the point group and the rank D. In quasicrystals, phasons as additional hydrodynamic modes cause correlated rearrangements of the particles. The number of phasonic degrees of freedom depends on the rank. For colloidal quasicrystals that are induced by laser fields, specific phasonic displacements can be realized by changing the phases of the laser beams in a well-determined way. The arising trajectories of colloids in two-dimensional light-induced colloidal quasicrystals with rank D = 4 have already been analyzed in detail. Here, we analyze the colloidal trajectories in two-dimensional quasicrystals with 14-fold symmetry having rank D = 6. We observe complex paths of the colloids consisting of straight and winding lines as well as jumps.},
author = {Martinsons, Miriam and Sandbrink, Matthias and Schmiedeberg, Michael},
faupublication = {no},
pages = {568-571},
peerreviewed = {Yes},
publisher = {POLISH ACAD SCIENCES INST PHYSICS},
title = {{Colloidal} {Trajectories} in {Two}-{Dimensional} {Light}-{Induced} {Quasicrystals} with 14-{Fold} {Symmetry} due to {Phasonic} {Drifts}},
volume = {126},
year = {2014}
}
@article{faucris.121428384,
abstract = {In the two-leg S=1/2 ladders of Sr14Cu24O41, a modulation of the exchange coupling arises from the charge order within the other structural element, the CuO2 chains. In general, breaking translational invariance by modulation causes gaps within the dispersion of elementary excitations. We show that the gap induced by the charge order can drastically change the magnetic Raman spectrum, leading to the sharp peak observed in Sr14Cu24O41. This sharp Raman line gives insight into the charge-order periodicity and hence into the distribution of carriers. The much broader spectrum of La6Ca8Cu24O41 reflects the response of an undoped ladder in the absence of charge order.},
author = {Schmidt, Kai Phillip and et al.},
author_hint = {Schmidt KP, Knetter C, Gruninger M, Uhrig GS},
doi = {10.1103/PhysRevLett.90.167201},
faupublication = {no},
journal = {Physical Review Letters},
peerreviewed = {Yes},
support_note = {Author relations incomplete. You may find additional data in field 'author_hint'},
title = {{Charge}-order-induced sharp {Raman} peak in {Sr14Cu24O41}},
volume = {90},
year = {2003}
}
@article{faucris.108808304,
abstract = {We study a colloidal model system where disorder can be continuously tuned from no disorder-corresponding to a system that can crystallize-to large disorder where geometrical frustration occurs. The model system consists of colloidal particles with screened electrostatic repulsion. They can only move on single lines which are parallel and equidistant to each other. We introduce disorder by modulating the particle line density. The system exhibits a solid-to-fluid transition which we study by the structure factor and the temporal evolution of the mean-square distance of nearest neighbors on neighboring lines. A determining feature is the occurrence of discontinuities when disorder is tuned to zero. We observe that the peak height of the pair correlation function in the solid phase does not extrapolate to the value of the perfect crystal. Similarly, the mean interaction energy and the screening length at which the solid-fluid transition occurs seem to be discontinuous when the limit of zero disorder is approached.},
author = {Richter, Christian and Schmiedeberg, Michael and Stark, Holger},
doi = {10.1140/epje/i2011-11107-7},
faupublication = {no},
journal = {European Physical Journal E},
peerreviewed = {Yes},
title = {{A} colloidal model system with tunable disorder: {Solid}-fluid transition and discontinuities in the limit of zero disorder},
volume = {34},
year = {2011}
}
@article{faucris.123191684,
abstract = {We study a model colloidal liquid crystal consisting of hard spherocylinders under the influence of an external aligning potential by Langevin dynamics simulation. The external field that rotates in a plane acts on the orientation of the individual particles and induces a variety of collective nonequilibrium states. We characterize these states by the time-resolved orientational distribution of the particles and explain their origin using the single particle behavior. By varying the external driving frequency and the packing fraction of the spherocylinders we construct the dynamical state diagram. (C) 2014 AIP Publishing LLC.},
author = {Fischermeier, Ellen and Marechal, Mattheus and Mecke, Klaus},
doi = {10.1063/1.4901423},
faupublication = {yes},
journal = {Journal of Chemical Physics},
peerreviewed = {Yes},
title = {{Dynamical} states in driven colloidal liquid crystals},
volume = {141},
year = {2014}
}
@article{faucris.110312224,
abstract = {Starting from a density functional theory for inhomogeneous fluids we derive an effective Hamiltonian for liquid-vapor interfaces of simple fluids which goes beyond the common phenomenological capillary-wave description. in contrast to other approaches we take into account the long-ranged power-law decay of the dispersion forces between the fluid particles which changes the functional form of the wave-vector-dependent surface tension qualitatively. In particular, we find two different forms of the bending rigidity for the capillary waves, a negative one for small wave vectors determined by the long-ranged dispersion forces and a positive rigidity for large wave vectors due to the distortions of the intrinsic density profile in the vicinity of the locally curved interface. The differences to the standard capillary-wave theory and the relevance of these results for the interpretation of scattering experiments are discussed.},
author = {Mecke, Klaus and et al.},
author_hint = {Mecke KR, Dietrich S},
faupublication = {no},
journal = {Physical Review E},
pages = {6766-6784},
peerreviewed = {Yes},
support_note = {Author relations incomplete. You may find additional data in field 'author_hint'},
title = {{Effective} {Hamiltonian} for liquid-vapor interfaces},
volume = {59},
year = {1999}
}
@incollection{faucris.121933284,
address = {Erlangen},
author = {Heydenreich, Aura and Mecke, Klaus},
booktitle = {Dunkle Energie},
editor = {Joseph Felix Ernst, Aura Heydenreich, Philip Krömer, Klaus Mecke},
faupublication = {yes},
isbn = {978-3-946120-66-7},
pages = {7-11},
peerreviewed = {unknown},
publisher = {homunculus verlag},
series = {Seitenstechen},
title = {{Dunkle} {Energie} im {Universum} der {Schrift} – {Zwischen} {Kosmologie} und {Poesie}. {Vorwort}},
volume = {2},
year = {2016}
}
@article{faucris.123189044,
abstract = {We propose a statistical model defined on tetravalent three-dimensional lattices in general and the three-dimensional diamond network in particular where the splitting of randomly selected nodes leads to a spatially disordered network, with decreasing degree of connectivity. The terminal state, that is reached when all nodes have been split, is a dense configuration of self-avoiding walks on the diamond network. Starting from the crystallographic diamond network, each of the four-coordinated nodes is replaced with probability p by a pair of two edges, each connecting a pair of the adjacent vertices. For all values 0 <= p <= 1 the network percolates, yet the fraction f(p) of the system that belongs to a percolating cluster drops sharply at p(c) = 1 to a finite value f(p)(c). This transition is reminiscent of a percolation transition yet with distinct differences to standard percolation behaviour, including a finite mass f(p)(c) > 0 of the percolating clusters at the critical point. Application of finite size scaling approach for standard percolation yields scaling exponents for p -> p(c) that are different from the critical exponents of the second-order phase transition of standard percolation models. This transition significantly affects the mechanical properties of linear-elastic realizations (e.g. as custom-fabricated models for artificial bone scaffolds), obtained by replacing edges with solid circular struts to give an effective density phi. Finite element methods demonstrate that, as a low-density cellular structure, the bulk modulus K shows a cross-over from a compression-dominated behaviour, K(phi) alpha phi(k) with kappa approximate to 1, at p = 0 to a bending-dominated behaviour with kappa approximate to 2 at p = 1.},
author = {Nachtrab, Susan and Hoffmann, Matthias and Kapfer, Sebastian and Schröder-Turk, Gerd and Mecke, Klaus},
doi = {10.1088/1367-2630/17/4/043061},
faupublication = {yes},
journal = {New Journal of Physics},
keywords = {percolation;networks in phase transitions;mechanical properties of solids},
peerreviewed = {Yes},
title = {{Beyond} the percolation universality class: the vertex split model for tetravalent lattices},
volume = {17},
year = {2015}
}
@incollection{faucris.121755084,
address = {Berlin, New York},
author = {Heydenreich, Aura and Mecke, Klaus},
booktitle = {Physik und Poetik. Produktionsästhetik und Werkgenese. Gegenwartsautoren und Gegenwartsautorinnen im Dialog},
editor = {Aura Heydenreich, Klaus Mecke},
faupublication = {yes},
isbn = {978-3-11-044036-2},
pages = {23–49},
peerreviewed = {unknown},
publisher = {De Gruyter},
series = {Literatur- und Naturwissenschaften},
title = {{Auf} der {Suche} nach {Sprache}. {Ulrike} {Draesner} im {Dialog} zu »{Mitgift}« und »{Vorliebe}«},
volume = {1},
year = {2015}
}
@article{faucris.124176404,
abstract = {We present an approach based on colloidal epitaxy to obtain three-dimensional colloidal quasicrystals, i.e., structures with long-range order but no periodicity. In contrast to other attempts to obtain soft-matter quasicrystals by design, no fine tuning of the colloid-colloid interactions is required. By using Monte Carlo simulations, we explore the development of multiple layers with the desired quasicrystalline symmetry when the colloidal particles sediment onto suitable quasicrystalline substrates. In addition, well-defined defect lines can be induced in the grown colloidal quasicrystal by constructing substrates with well-chosen defects that lead to induced defect lines. We present a study of the three-dimensional course of such dislocation lines by inducing and analyzing stable lines that bend, unstable ones that split up, or defect lines that merge with other defects. Dislocations are characterized by Burgers vectors that are composed of a phononic part as in a periodic crystal and an additional phasonic part that is unique to quasicrystals. As in a periodic crystal, the sum of all Burgers vectors is conserved along defect lines and at all forks. However, unlike in a periodic crystal, the course of a dislocation line in a quasicrystal depends on its position. Furthermore, although in a quasicrystal all Burgers vectors can always be written as sum of Burgers vectors with a smaller phononic part, we find dislocations that do not decompose into dislocations with smaller phononic Burgers vectors. For quasicrystals with eightfold and twelvefold rotational symmetry, we identify basis Burgers vectors that denote stable dislocations. Our results can be verified in experiments and are important for applications of colloidal quasicrystals, e.g., for the development of photonic quasicrystals.},
author = {Sandbrink, Matthias and Schmiedeberg, Michael},
doi = {10.1103/PhysRevB.90.064108},
faupublication = {no},
journal = {Physical Review B},
peerreviewed = {Yes},
title = {{Course} of dislocation lines in templated three-dimensional colloidal quasicrystals},
volume = {90},
year = {2014}
}
@article{faucris.107641864,
abstract = {We present a robust scheme to derive effective models non-perturbatively for quantum lattice models when at least one degree of freedom is gapped. A combination of graph theory and the method of continuous unitary transformations (gCUTs) is shown to efficiently capture all zero-temperature fluctuations in a controlled spatial range. The gCUT can be used either for effective quasi-particle descriptions or for effective low-energy descriptions in case of infinitely degenerate subspaces. We illustrate the method for 1d and 2d lattice models yielding convincing results in the thermodynamic limit. We find that the recently discovered spin liquid in the Hubbard model on the honeycomb lattice lies outside the perturbative strong-coupling regime. Various extensions and perspectives of the gCUT are discussed. Copyright (C) EPLA, 2011},
author = {Yang, H. Y. and Schmidt, Kai Phillip},
doi = {10.1209/0295-5075/94/17004},
faupublication = {no},
journal = {EPL - Europhysics Letters},
peerreviewed = {Yes},
title = {{Effective} models for gapped phases of strongly correlated quantum lattice models},
volume = {94},
year = {2011}
}
@article{faucris.213277616,
abstract = {Connecting the collective behavior of disordered systems with local structure on the particle scale is an important challenge, for example, in granular and glassy systems. Compounding complexity, in many scientific and industrial applications, particles are polydisperse, aspherical, or even of varying shape. Here, we investigate a generalization of the classical kissing problem in order to understand the local building blocks of packings of aspherical grains. We numerically determine the densest local structures of uniaxial ellipsoids by minimizing the Set Voronoi cell volume around a given particle. Depending on the particle aspect ratio, different local structures are observed and classified by symmetry and Voronoi coordination number. In extended disordered packings of frictionless particles, knowledge of the densest structures allows us to rescale the Voronoi volume distributions onto the single-parameter family of k-Gamma distributions. Moreover, we find that approximate icosahedral clusters are found in random packings, while the optimal local structures for more aspherical particles are not formed.},
author = {Schaller, Fabian and Weigel, Robert and Kapfer, Sebastian},
doi = {10.1103/PhysRevX.6.041032},
faupublication = {yes},
journal = {Physical Review X},
note = {EAM Import::2019-03-13},
peerreviewed = {Yes},
title = {{Densest} {Local} {Structures} of {Uniaxial} {Ellipsoids}},
volume = {6},
year = {2016}
}
@article{faucris.121581724,
abstract = {We explore the growth of two-dimensional quasicrystals, i.e., aperiodic structures that possess long-range order, from two seeds at various distances and with different orientations by using dynamical phase-field crystal calculations. We compare the results to the growth of periodic crystals from two seeds. There, a domain border consisting of dislocations is observed in case of large distances between the seed and large angles between their orientation. Furthermore, a domain border is found if the seeds are placed at a distance that does not fit to the periodic lattice. In the case of the growth of quasicrystals, we only observe domain borders for large distances and different orientations. Note that all distances do inherently not match to a perfect domain wall-free quasicrystalline structure. Nevertheless, we find dislocation-free growth for all seeds at a small enough distance and for all seeds that approximately have the same orientation. In periodic structures, the stress that occurs due to incommensurate distances between the seeds results in phononic strain fields or, in the case of too large stresses, in dislocations. In contrast, in quasicrystals an additional phasonic strain field can occur and suppress dislocations. Phasons are additional degrees of freedom that are unique to quasicrystals. As a consequence, the additional phasonic strain field helps to distribute the stress and facilitates the growth of dislocation-free quasicrystals from multiple seeds. In contrast, in the periodic case the growth from multiple seeds most likely leads to a structure with multiple domains. Our work lays the theoretical foundations for growing perfect quasicrystals from different seeds and is therefore relevant for many applications.},
author = {Schmiedeberg, Michael and Achim, Cristian and Hielscher, Johannes and Kapfer, Sebastian and Loewen, Hartmut},
doi = {10.1103/PhysRevE.96.012602},
faupublication = {yes},
journal = {Physical Review E},
peerreviewed = {Yes},
title = {{Dislocation}-free growth of quasicrystals from two seeds due to additional phasonic degrees of freedom},
volume = {96},
year = {2017}
}
@article{faucris.110305184,
abstract = {The Minkowski functionals, a family of statistical measures based on the Euler-Poincare characteristic of n-dimensional space, are the complete set of additive morphological measures and can be simply calculated from local contributions. As such, they have found a wide range of applications. We consider the effects of distortions (drift, noise and blurring) on the morphological properties of complex random models, representative of a wide range of structure. Such distortions arise experimentally in imaging techniques due to diffraction, absorption and sample drift. The question is asked, how critically these distortions effect image quality as measured by the Minkowski functionals. Defining a length scale based on the two-point correlation function, we consider how distortion at different scales can lead to quantitative errors in morphological measures.},
author = {Arns, C. H. and Knackstedt, M. A. and Mecke, Klaus},
doi = {10.1111/j.1365-2818.2010.03395.x},
faupublication = {yes},
journal = {Journal of Microscopy},
keywords = {Morphology;complex materials;porous media;Minkowski functional},
pages = {181-196},
peerreviewed = {Yes},
title = {{3D} structural analysis: sensitivity of {Minkowski} functionals},
volume = {240},
year = {2010}
}
@article{faucris.123191244,
abstract = {Two-dimensional hard-particle systems are rather easy to simulate but surprisingly difficult to treat by theory. Despite their importance from both theoretical and experimental points of view, theoretical approaches are usually qualitative or at best semi-quantitative. Here, we present a density functional theory based on the ideas of fundamental measure theory for two-dimensional hard-disk mixtures, which allows for the first time an accurate description of the structure of the dense fluid and the equation of state for the solid phase within the framework of density functional theory. The properties of the solid phase are obtained by freely minimizing the functional. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.3687921]},
author = {Roth, Roland and Mecke, Klaus and Oettel, Martin},
doi = {10.1063/1.3687921},
faupublication = {yes},
journal = {Journal of Chemical Physics},
keywords = {density functional theory;equations of state},
peerreviewed = {Yes},
title = {{Communication}: {Fundamental} measure theory for hard disks: {Fluid} and solid},
volume = {136},
year = {2012}
}
@article{faucris.107598084,
abstract = {We identify a fundamental challenge for any non-perturbative approach based on finite clusters resulting from the reduced symmetry on graphs, most importantly the breaking of translational symmetry, when targeting the properties of excited states. This can be traced back to the appearance of intruder states in the low-energy spectrum, which represent a major obstacle in quasi-degenerate perturbation theory. Here a generalized notion of cluster additivity is introduced, which is used to formulate an optimized scheme of graph-based continuous unitary transformations allowing to solve and to physically understand this major issue. Most remarkably, our improved scheme demands to go beyond the paradigm of using the exact eigenvectors on graphs. Copyright (C) EPLA, 2015},
author = {Coester, K. and Clever, S. and Herbst, F. and Capponi, Sylvain and Schmidt, Kai Phillip},
doi = {10.1209/0295-5075/110/20006},
faupublication = {no},
journal = {EPL - Europhysics Letters},
peerreviewed = {Yes},
title = {{A} generalized perspective on non-perturbative linked-cluster expansions},
volume = {110},
year = {2015}
}
@article{faucris.108534844,
abstract = {We studied the robustness of a generalized Kitaev's toric code with Z(N) degrees of freedom in the presence of local perturbations. For N = 2, this model reduces to the conventional toric code in a uniform magnetic field. A quantitative analysis was performed for the perturbed Z(3) toric code by applying a combination of high-order series expansions and variational techniques. We found strong evidence for first- and second-order phase transitions between topologically ordered and polarized phases. Most interestingly, our results also indicate the existence of topological multi-critical points in the phase diagram.},
author = {Schulz, Marc Daniel and Dusuel, Sebastien and Orus, Roman and Vidal, Julien and Schmidt, Kai Phillip},
doi = {10.1088/1367-2630/14/2/025005},
faupublication = {no},
journal = {New Journal of Physics},
peerreviewed = {Yes},
title = {{Breakdown} of a perturbed {Z}({N}) topological phase},
volume = {14},
year = {2012}
}
@article{faucris.123187504,
abstract = {The influence of thermal fluctuations on adsorption isotherms is calculated within the context of a self consistent mean-held theory, and it is found that such fluctuations cannot be neglected in the analysis of adsorption data. This result arises from our observation that substrate-induced hindrance of thermal fluctuations can significantly alter the form of an adsorption isotherm, particularly in the thin-film regime (approximate to 0-5 nm) which is most commonly probed by adsorption experiments. Previous experiments involving room-temperature adsorption on flat surfaces have been reanalyzed, and the reported discrepancies with the Lifshitz theory of van der Waals forces are found to be much reduced when thermal fluctuations of the thickness of the adsorbed layer are taken into account. Recently published data for nitrogen adsorption on rough substrates have also been reanalyzed, and the thermal fluctuations are found to be more important for thin adsorbed layers than undulations of the film induced by the roughness of the substrate. The analysis reveals that, as long suspected, the scaling regime of asymptotic divergence has not yet been reached for film thicknesses remaining below 5 nm.},
author = {Mecke, Klaus and et al.},
author_hint = {Mecke KR, Krim J},
faupublication = {no},
journal = {Physical Review B},
month = {Jan},
pages = {2073-2082},
peerreviewed = {Yes},
support_note = {Author relations incomplete. You may find additional data in field 'author_hint'},
title = {{Adsorption} isotherms and thermal fluctuations},
volume = {53},
year = {1996}
}
@article{faucris.123220504,
abstract = {In this article, the second of three, we discuss and develop the basis of a Weyl quantisation for compact Lie groups aiming at loop quantum gravity-type models. This Weyl quantisation may serve as the main mathematical tool to implement the program of space adiabatic perturbation theory in such models. As we already argued in our first article, space adiabatic perturbation theory offers an ideal framework to overcome the obstacles that hinder the direct implementation of the conventional Born-Oppenheimer approach in the canonical formulation of loop quantum gravity. Additionally, we conjecture the existence of a new form of the Segal-Bargmann-Hall "coherent state" transform for compact Lie groups G, which we prove for G = U(1)(n) and support by numerical evidence for G = SU(2). The reason for conjoining this conjecture with the main topic of this article originates in the observation that the coherent state transform can be used as a basic building block of a coherent state quantisation (Berezin quantisation) for compact Lie groups G. But, as Weyl and Berezin quantisation for R-2d are intimately related by heat kernel evolution, it is natural to ask whether a similar connection exists for compact Lie groups as well. Moreover, since the formulation of space adiabatic perturbation theory requires a (deformation) quantisation as minimal input, we analyse the question to what extent the coherent state quantisation, defined by the Segal-Bargmann-Hall transform, can serve as basis of the former. Published by AIP Publishing.},
author = {Stottmeister, Alexander and Thiemann, Thomas},
doi = {10.1063/1.4954803},
faupublication = {yes},
journal = {Journal of Mathematical Physics},
peerreviewed = {Yes},
title = {{Coherent} states, quantum gravity, and the {Born}-{Oppenheimer} approximation. {II}. {Compact} {Lie} groups},
volume = {57},
year = {2016}
}
@article{faucris.123292004,
abstract = {In this work we consider the following question: given a mechanical microswimming mechanism, does increased deformability of the swimmer body hinder or promote the motility of the swimmer? To answer this we run immersed-boundary-lattice-Boltzmann simulations of a microswimmer composed of deformable beads connected with springs. We find that the same deformations in the beads can result in different effects on the swimming velocity, namely an enhancement or a reduction, depending on the other parameters. To understand this we determine analytically the velocity of the swimmer, starting from the forces driving the motion and assuming that the deformations in the beads are known as functions of time and are much smaller than the beads themselves. We find that to the lowest order, only the driving frequency mode of the surface deformations contributes to the swimming velocity, and comparison to the simulations shows that both the velocity-promoting and velocity-hindering effects of bead deformability are reproduced correctly by the theory in the limit of small bead deformations. For the case of active deformations we show that there are critical values of the spring constant - which for a general swimmer corresponds to its main elastic degree of freedom - which decide whether the body deformability is beneficial for motion or not.},
author = {Pande, Jayant and Merchant, Laura and Krueger, Timm and Harting, Jens and Smith, Ana-Suncana},
doi = {10.1039/c7sm00181a},
faupublication = {yes},
journal = {Soft Matter},
keywords = {LOW-REYNOLDS-NUMBER; LATTICE BOLTZMANN; SWIMMER; CILIA; PARTICLES; DYNAMICS; MOTORS; FLUIDS; SIMULATIONS; EFFICIENT},
pages = {3984-3993},
peerreviewed = {Yes},
title = {{Effect} of body deformability on microswimming},
url = {http://pub.hi-ern.de/publications/2017/PMKHS17a/SoftMatterDeformableSwimmer2017.pdf},
volume = {13},
year = {2017}
}
@article{faucris.123976424,
abstract = {The dynamics of formation of macromolecular structures in adherent membranes is a key to a number of cellular processes. However, the interplay between protein reaction kinetics, diffusion and the morphology of the growing domains, governed by membrane mediated interactions, is still poorly understood. Here we show, experimentally and in simulations, that a rich phase diagram emerges from the competition between binding, cooperativity, molecular crowding and membrane spreading. In the cellular context, the spontaneously-occurring organization of adhesion domains in ring-like morphologies is particularly interesting. These are stabilized by the crowding of bulky proteins, and the membrane-transmitted correlations between bonds. Depending on the density of the receptors, this phase may be circumvented, and instead, the adhesions may grow homogeneously in the contact zone between two membranes. If the development of adhesion occurs simultaneously with membrane spreading, much higher accumulation of binders can be achieved depending on the velocity of spreading. The mechanisms identified here, in the context of our mimetic model, may shed light on the structuring of adhesions in the contact zones between two living cells. This article is part of a Special Issue entitled: Mechanobiology. (C) 2015 Elsevier B.V. All rights reserved.},
author = {Schmidt, Daniel and Bihr, Timo and Fenz, Susanne and Merkel, Rudolf and Seifert, Udo and Sengupta, Kheya and Smith, Ana-Suncana},
doi = {10.1016/j.bbamcr.2015.05.025},
faupublication = {yes},
journal = {Biochimica Et Biophysica Acta-Molecular Cell Research},
keywords = {Cell adhesion;Immunological synapse;Adhesion dynamics;Membrane transmitted correlations;Ligand-receptor bonds;Crowding effects;Membrane fluctuations;Diffusion-reaction systems},
pages = {2984-2991},
peerreviewed = {Yes},
title = {{Crowding} of receptors induces ring-like adhesions in model membranes},
url = {http://www.sciencedirect.com/science/article/pii/S0167488915001792},
volume = {1853},
year = {2015}
}
@incollection{faucris.121074624,
address = {Berlin, New York},
author = {Heydenreich, Aura and Mecke, Klaus},
booktitle = {Physik und Poetik. Produktionsästhetik und Werkgenese. Gegenwartsautoren und Gegenwartsautorinnen im Dialog},
editor = {Aura Heydenreich, Klaus Mecke},
faupublication = {yes},
isbn = {978-3-11-044036-2},
pages = {186–227},
peerreviewed = {unknown},
publisher = {De Gruyter},
series = {Literatur- und Naturwissenschaften},
title = {{Die} {Zeit} ist der {Abgrund}, in den wir fallen.{Thomas} {Lehr} im {Dialog} zu »42«},
volume = {1},
year = {2015}
}
@article{faucris.118199224,
abstract = {By use of a model system consisting of giant vesicles adhering to. at substrates, we identified, both experimentally and theoretically, two new control mechanisms for antagonist-induced deadhesion. Adhesion is established by specific binding of surface-grafted E-selectin and vesicle-carrying oligosaccharide Lewis(X). Deadhesion is achieved by controlled titration of monoclonal antibodies against E-selectin. The first mechanism is characterized by a considerable retraction of the contact zone resulting in a loss of contact area between the vesicle and the substrate. Within the developed theoretical framework, the observed equilibrium state is understood as a balance between the spreading pressure of the vesicle and the antagonist-induced lateral pressure at the edge of the contact zone. In the second mechanism, the antibodies induce unbinding by penetrating the contact zone without significantly affecting its size. This process reveals the decomposition of the adhesion zone into microdomains of tight binding separated by strongly fluctuating sections of the membrane. Both experiment and theory show a sigmoidal decrease of the number of bound ligands as a function of the logarithm of antagonist concentration. The work presented herein also provides a new method for the determination of the receptor binding affinity of either the surface-embedded ligands or the competing antagonist molecules.},
author = {Smith, Ana-Suncana and Lorz, Barbara Gertrud and Seifert, Udo and Sackmann, Erich},
doi = {10.1529/biophysj.105.062166},
faupublication = {no},
journal = {Biophysical Journal},
keywords = {CELL-ADHESION; L-SELECTIN; MEMBRANE; LIGAND; REPULSION; INTEGRIN; CYTOSKELETON; NEUTROPHILS; TRANSITION; MICROSCOPY},
pages = {1064-1080},
peerreviewed = {Yes},
title = {{Antagonist}-induced deadhesion of specifically adhered vesicles},
url = {https://www.ncbi.nlm.nih.gov/pubmed/16272442},
volume = {90},
year = {2006}
}
@article{faucris.108809404,
abstract = {Brownian particles in random potentials show an extended regime of subdiffusive dynamics at intermediate times. The asymptotic diffusive behavior is often established at very long times and thus cannot be accessed in experiments or simulations. For the case of one-dimensional random potentials with Gaussian distributed energies, we present a detailed analysis of experimental and simulation data. It is shown that the asymptotic long-time diffusion coefficient can be related to the behavior at intermediate times, namely, the minimum of the exponent that characterizes subdiffusion and hence corresponds to the maximum degree of subdiffusion. As a consequence, investigating only the dynamics at intermediate times is sufficient to predict the order of magnitude of the long-time diffusion coefficient and the time scale at which the crossover from subdiffusion to diffusion occurs, i.e., when the long-time diffusive regime and hence thermal equilibrium is established. Inversely, theoretical predictions derived for the asymptotic long-time behavior can be used to quantitatively characterize the intermediate behavior, which hardly has been studied so far.},
author = {Hanes, Richard and Schmiedeberg, Michael and Egelhaaf, Stefan},
doi = {10.1103/PhysRevE.88.062133},
faupublication = {no},
journal = {Physical Review E},
peerreviewed = {Yes},
title = {{Brownian} particles on rough substrates: {Relation} between intermediate subdiffusion and asymptotic long-time diffusion},
volume = {88},
year = {2013}
}
@article{faucris.123190364,
abstract = {We investigate the structure formation in thin films of cylinder forming block copolymers. With in situ scanning probe microscopy image sequences can be recorded with high temporal (2 min per frame) and spatial (10 nm) resolution. We compare different image processing methods for quantitative analysis of the large amount of data. Computing local Minkowski functionals yields local geometrical and morphological information about the observed structures and enables us to track their evolution with time. An alternative characterization method is to reduce the gray scale images to their skeleton and to classify and count the branching points of the skeletonized structure. We tracked the temporal evolution of these measures and computed correlation functions.},
author = {Rehse, S. and Mecke, Klaus and Magerle, R.},
doi = {10.1103/PhysRevE.77.051805},
faupublication = {yes},
journal = {Physical Review E},
peerreviewed = {Yes},
title = {{Characterization} of the dynamics of block copolymer microdomains with local morphological measures},
volume = {77},
year = {2008}
}
@article{faucris.122020404,
abstract = {We study the relation of permeability and morphology for porous structures composed of randomly placed overlapping circular or elliptical grains, so-called Boolean models. Microfluidic experiments and lattice Boltzmann simulations allowus to evaluate a power-lawrelation between theEuler characteristic of the conducting phase and its permeability. Moreover, this relation is so far only directly applicable to structures composed of overlapping grains where the grain density is known a priori. We develop a generalization to arbitrary structures modeled by Boolean models and characterized by Minkowski functionals. This generalization works well for the permeability of the void phase in systems with overlapping grains, but systematic deviations are found if the grain phase is transporting the fluid. In the latter case our analysis reveals a significant dependence on the spatial discretization of the porous structure, in particular the occurrence of single isolated pixels. To link the results to percolation theory we performed Monte Carlo simulations of the Euler characteristic of the open cluster, which reveals different regimes of applicability for our permeability-morphology relations close to and far away from the percolation threshold.},
author = {Scholz, Christian and Klatt, Michael and Mecke, Klaus and Wirner, Frank and Hirneise, Daniel and Schröder-Turk, Gerd and Bechinger, Clemens},
doi = {10.1103/PhysRevE.92.043023},
faupublication = {yes},
journal = {Physical Review E},
peerreviewed = {Yes},
title = {{Direct} relations between morphology and transport in {Boolean} models},
volume = {92},
year = {2015}
}
@article{faucris.213263757,
abstract = {The Single Gyroid, or srs, nanostructure has attracted interest as a circular-polarisation sensitive photonic material. We develop a group theoretical and scattering matrix method, applicable to any photonic crystal with symmetry I432, to demonstrate the remarkable chiral-optical properties of a generalised structure called 8-srs, obtained by intergrowth of eight equal-handed srs nets. Exploiting the presence of four-fold rotations, Bloch modes corresponding to the irreducible representations E$-$ and E+ are identified as the sole and non-interacting transmission channels for right- and left-circularly polarised light, respectively. For plane waves incident on a finite slab of the 8-srs, the reflection rates for both circular polarisations are identical for all frequencies and transmission rates are identical up to a critical frequency below which scattering in the far field is restricted to zero grating order. Simulations show the optical activity of the lossless dielectric 8-srs to be large, comparable to metallic metamaterials, demonstrating its potential as a nanofabricated photonic material.},
author = {Saba, Matthias and Turner, Mark D. and Gu, Min and Mecke, Klaus and Schröder-Turk, Gerd},
doi = {10.1117/12.2033820},
faupublication = {yes},
journal = {Proceedings of SPIE},
note = {EAM Import::2019-03-13},
peerreviewed = {unknown},
title = {{Chiral} {Photonic} {Crystals} with 4-fold {Symmetry}: {Band} {Structure} and {S}-{Parameters} of {Eight}-{Fold} {Intergrown} {Gyroid} {Nets}},
volume = {1},
year = {2013}
}
@article{faucris.108808964,
abstract = {We study the Brownian motion of an ensemble of single colloidal particles in a random square and a quasicrystalline potential when they start from non-equlibrium. For both potentials, Brownian dynamics simulations reveal a widespread subdiffusive regime before the diffusive long-time limit is reached in thermal equilibrium. We develop a random trap model based on a distribution for the depths of trapping sites that reproduces the results of the simulations in detail. Especially, it gives analytic formulas for the long-time diffusion constant and the relaxation time into the diffusive regime. Aside from detailed differences, our work demonstrates that quasicrystalline potentials can be used to mimic aspects of random potentials.},
author = {Schmiedeberg, Michael and Roth, Johannes and Stark, Holger},
doi = {10.1140/epje/i2007-10247-7},
faupublication = {no},
journal = {European Physical Journal E},
pages = {367-377},
peerreviewed = {Yes},
title = {{Brownian} particles in random and quasicrystalline potentials: {How} they approach the equilibrium},
volume = {24},
year = {2007}
}
@article{faucris.108548044,
abstract = {We show that the spin-liquid phase of the half-filled Hubbard model on the triangular lattice can be described by a pure spin model. This is based on a high-order strong coupling expansion ( up to order 12) using perturbative continuous unitary transformations. The resulting spin model is consistent with a transition from three-sublattice long-range magnetic order to an insulating spin-liquid phase, and with a jump of the double occupancy at the transition. Exact diagonalizations of both models show that the effective spin model is quantitatively accurate well into the spin-liquid phase, and a comparison with the Gutzwiller projected Fermi sea suggests a gapless spectrum and a spinon Fermi surface.},
author = {Yang, Hong-Yu and Laeuchli, Andreas M. and Mila, Frederic and Schmidt, Kai Phillip},
doi = {10.1103/PhysRevLett.105.267204},
faupublication = {no},
journal = {Physical Review Letters},
peerreviewed = {Yes},
title = {{Effective} {Spin} {Model} for the {Spin}-{Liquid} {Phase} of the {Hubbard} {Model} on the {Triangular} {Lattice}},
volume = {105},
year = {2010}
}
@article{faucris.110311564,
abstract = {The diffusive growth rate of a polyhedral cell in dry three-dimensional foams depends on details of shape beyond cell topology, in contrast to the situation in two dimensions, where, by von Neumann's law, the growth rate depends only on the number of cell edges. We analyze the dependence of the instantaneous growth rate on the shape of single foam cells surrounded by uniform pressure; this is accomplished by supporting the cell with films connected to a wire frame and inducing cell distortions by deforming the wire frame. We consider three foam cells with a very simple topology; these are the Platonic foam cells, which satisfy Plateau's laws and are based on the trivalent Platonic solids (tetrahedron, cube, and dodecahedron). The Surface Evolver is used to model cell deformations induced through extension, compression, shear, and torsion of the wire frames. The growth rate depends on the deformation mode and frame size and can increase or decrease with increasing cell distortion. The cells have negative growth rates, in general, but dodecahedral cells subjected to torsion in small wire frames can have positive growth rates. The deformation of cubic cells is demonstrated experimentally.},
author = {Evans, Myfanwy and Zirkelbach, Johannes and Schröder-Turk, Gerd and Kraynik, Andrew M. and Mecke, Klaus},
doi = {10.1103/PhysRevE.85.061401},
faupublication = {yes},
journal = {Physical Review E},
peerreviewed = {Yes},
title = {{Deformation} of {Platonic} foam cells: {Effect} on growth rate},
volume = {85},
year = {2012}
}
@article{faucris.108535284,
abstract = {Motivated by the recent discovery of a spin-liquid phase for the Hubbard model on the honeycomb lattice at half-filling (Meng et al 2010 Nature 88 487), we apply both perturbative and non-perturbative techniques to derive effective spin Hamiltonians describing the low-energy physics of the Mottinsulating phase of the system. Exact diagonalizations of the so-derived models on small clusters are performed, in order to assess the quality of the effective low-energy theory in the spin-liquid regime. We show that six-spin interactions on the elementary loop of the honeycomb lattice are the dominant sub-leading effective couplings. A minimal spin model is shown to reproduce most of the energetic properties of the Hubbard model on the honeycomb lattice in its spin-liquid phase. Surprisingly, a more elaborate effective low-energy spin model obtained by a systematic graph expansion rather disagrees beyond a certain point with the numerical results for the Hubbard model at intermediate couplings.},
author = {Yang, Hong-Yu and Fabricio Albuquerque, A. and Capponi, Sylvain and Laeuchli, Andreas M. and Schmidt, Kai Phillip},
doi = {10.1088/1367-2630/14/11/115027},
faupublication = {no},
journal = {New Journal of Physics},
peerreviewed = {Yes},
title = {{Effective} spin couplings in the {Mott} insulator of the honeycomb lattice {Hubbard} model},
volume = {14},
year = {2012}
}
@article{faucris.107256864,
abstract = {The slow dynamics in a glassy hard-sphere system is dominated by cage breaking events, i.e. rearrangements where a particle escapes from the cage formed by its neighboring particles. We study such events for an overdamped colloidal system by the means of Brownian dynamics simulations. While it is difficult to relate cage breaking events to structural mean field results in bulk, we show that the microscopic dynamics of particles close to a wall can be related to the anisotropic two-particle density. In particular, we study cage-breaking trajectories, mean forces on a tracked particle, and the impact of the history of trajectories. Based on our simulation results, we further construct two different one-particle random-walk models-one without and one with memory incorporated-and find the local anisotropy and the history-dependence of particles as crucial ingredients to describe the escape from a cage. Finally, our detailed study of a rearrangement event close to a wall not only reveals the memory effect of cages, but leads to a deeper insight into the fundamental mechanisms of glassy dynamics.},
author = {Kohl, Matthias and Haertel, Andreas and Schmiedeberg, Michael},
doi = {10.1088/0953-8984/28/50/505001},
faupublication = {yes},
journal = {Journal of Physics: Condensed Matter},
keywords = {cage breaking event;glassy dynamics;structure of liquids;dynamic slowdown;particle memory;random-walk model},
peerreviewed = {Yes},
title = {{Anisotropy} and memory during cage breaking events close to a wall},
volume = {28},
year = {2016}
}
@article{faucris.119190764,
abstract = {In the course of miniaturization of electronic and microfluidic devices, reliable predictions of the stability of ultrathin films have a strategic role for design purposes. Consequently, efficient computational techniques that allow for a direct comparison with experiment become increasingly important. Here we demonstrate, for the first time, that the full complex spatial and temporal evolution of the rupture of ultrathin films can be modelled in quantitative agreement with experiment. We accomplish this by combining highly controlled experiments on different film-rupture patterns with computer simulations using novel numerical schemes for thin-film equations. For the quantitative comparison of the pattern evolution in both experiment and simulation we introduce a novel pattern analysis method based on Minkowski measures. Our results are fundamental for the development of efficient tools capable of describing essential aspects of thin-film flow in technical systems.},
author = {Becker, Jürgen and Grün, Günther and Seemann, Ralf and Manz, Hubert and Jacobs, Karin and Mecke, Klaus and Blossey, Ralf},
doi = {10.1038/nmat788},
faupublication = {no},
journal = {Nature Materials},
month = {Jan},
pages = {59-63},
peerreviewed = {Yes},
title = {{Complex} dewetting scenarios captured by thin-film models},
volume = {2},
year = {2003}
}
@article{faucris.123466904,
abstract = {While the random organization transition describes the change from reversible to irreversible dynamics in a nonequilibrium system, the athermal jamming transition at zero shear rate occurs when particles can no longer avoid overlaps. Despite the obvious differences between these two transitions, we show that they both occur within the same model packing problem. In this unifying model system the particles are first randomly distributed and then displaced in each step if they overlap. For random displacements we obtain a random organization transition, while jamming occurs in the case of deterministic shifts. We also analyze the critical behavior of random organization. Our results show that random organization and jamming are opposite limits of random sphere packings, and we expect that various equilibrium and nonequilibrium transitions can be formulated as related intermediate packing problems.},
author = {Milz, Lars and Schmiedeberg, Michael},
doi = {10.1103/PhysRevE.88.062308},
faupublication = {no},
journal = {Physical Review E},
peerreviewed = {Yes},
title = {{Connecting} the random organization transition and jamming within a unifying model system},
volume = {88},
year = {2013}
}
@article{faucris.114389704,
abstract = {Investigating how tightly objects pack space is a long-standing problem, with relevance for many disciplines from discrete mathematics to the theory of glasses. Here we report on the fundamental yet so far overlooked geometric property that disordered mono-disperse spherical bead packs have significant local structural anisotropy manifest in the shape of the free space associated with each bead. Jammed disordered packings from several types of experiments and simulations reveal very similar values of the cell anisotropy, showing a linear decrease with packing fraction. Strong deviations from this trend are observed for unjammed configurations and for partially crystalline packings above 64%. These findings suggest an inherent geometrical reason why, in disordered packings, anisotropic shapes can fill space more efficiently than spheres, and have implications for packing effects in non-spherical liquid crystals, foams and structural glasses.},
author = {Schröder-Turk, Gerd and Mickel, Walter and Schröter, Matthias and Delaney, Gary and Saadatfar, Mohammad and Senden, T.J. and Mecke, Klaus and Aste, T.},
doi = {10.1209/0295-5075/90/34001},
faupublication = {yes},
journal = {EPL - Europhysics Letters},
pages = {34001},
peerreviewed = {Yes},
title = {{Disordered} spherical bead packs are anisotropic},
volume = {90},
year = {2010}
}
@article{faucris.107843384,
abstract = {We study the transverse field Ising model on a kagome and a triangular lattice using high-order series expansions about the high-field limit. For the triangular lattice our results confirm a second-order quantum phase transition in the 3d XY universality class. Our findings for the kagome lattice indicate a notable instance of a disorder by disorder scenario in two dimensions. The latter follows from a combined analysis of the elementary gap in the high- and low-field limit which is shown to stay finite for all fields h. Furthermore, the lowest one-particle dispersion for the kagome lattice is extremely flat acquiring a dispersion only from order 8 in the 1/h limit. This behavior can be traced back to the existence of local modes and their breakdown which is understood intuitively via the linked cluster expansion. DOI: 10.1103/PhysRevB.87.054404},
author = {Powalski, M. and Coester, K. and Moessner, R. and Schmidt, Kai Phillip},
doi = {10.1103/PhysRevB.87.054404},
faupublication = {no},
journal = {Physical Review B},
peerreviewed = {unknown},
title = {{Disorder} by disorder and flat bands in the kagome transverse field {Ising} model},
volume = {87},
year = {2013}
}
@article{faucris.108808744,
abstract = {Two-dimensional colloidal suspensions subjected to laser interference patterns with decagonal symmetry can form an Archimedean-like tiling phase where rows of squares and triangles order aperiodically along one direction (J. Mikhael et al., Nature 454, 501 (2008)). In experiments as well as in Monte Carlo and Brownian dynamics simulations, we identify a similar phase when the laser field possesses tetradecagonal symmetry. We characterize the structure of both Archimedean-like tilings in detail and point out how the tilings differ from each other. Furthermore, we also estimate specific particle densities where the Archimedean-like tiling phases occur. Finally, using Brownian dynamics simulations we demonstrate how phasonic distortions of the decagonal laser field influence the Archimedean-like tiling. In particular, the domain size of the tiling can be enlarged by phasonic drifts and constant gradients in the phasonic displacement. We demonstrate that the latter occurs when the interfering laser beams are not ideally adjusted.},
author = {Schmiedeberg, Michael and Mikhael, Jules and Rausch, Sebastian and Roth, Johannes and Helden, Laurent and Bechinger, Clemens and Stark, Holger},
doi = {10.1140/epje/i2010-10587-1},
faupublication = {no},
journal = {European Physical Journal E},
pages = {25-34},
peerreviewed = {Yes},
title = {{Archimedean}-like colloidal tilings on substrates with decagonal and tetradecagonal symmetry},
volume = {32},
year = {2010}
}
@misc{faucris.119643304,
author = {Zöbelein, Carolin and Giesel, Kristina},
faupublication = {yes},
peerreviewed = {automatic},
title = {{Dirac}-{Observablen} in der {Kosmolgie}},
year = {2013}
}
@article{faucris.123536864,
abstract = {We analyze the stability of micro-domains of ligand-receptor bonds that mediate the adhesion of biological model membranes. After evaluating the effects of membrane fluctuations on the binding affinity of a single bond, we characterize the organization of bonds within the domains by theoretical means. In a large range of parameters, we find the commonly suggested dense packing to be separated by a free energy barrier from a regime in which bonds are sparsely distributed. If bonds are mobile, a coexistence of the two regimes should emerge, which agrees with recent experimental observations. Copyright (C) EPLA, 2012},
author = {Schmidt, Daniel and Bihr, Timo and Seifert, Udo and Smith, Ana-Suncana},
doi = {10.1209/0295-5075/99/38003},
faupublication = {yes},
journal = {EPL - Europhysics Letters},
keywords = {CELL-ADHESION; FLUCTUATIONS; JUNCTIONS; VESICLES},
peerreviewed = {Yes},
title = {{Coexistence} of dilute and densely packed domains of ligand-receptor bonds in membrane adhesion},
url = {http://iopscience.iop.org/article/10.1209/0295-5075/99/38003/meta},
volume = {99},
year = {2012}
}
@incollection{faucris.122965304,
address = {Berlin},
author = {Heydenreich, Aura and Mecke, Klaus},
booktitle = {Physik und Poetik. Produktionsästhetik und Werkgenese ; Autorinnen und Autoren im Dialog, Interviews mit: Thomas Lehr, Durs Grünbein, Raoul Schrott, Ulrike Draesner, Jens Harder, Ulrich Woelk, Juli Zeh, Michael Hampe},
editor = {Aura Heydenreich, Klaus Mecke},
faupublication = {yes},
isbn = {978-3-11-040651-1},
pages = {VII–XXVIII},
peerreviewed = {unknown},
publisher = {De Gruyter},
series = {Literatur- und Naturwissenschaften},
title = {{Dialogisches} {Denken}. {Ein} {Plädoyer} für die {Etablierung} einer {Kultur} des wechselseitigen {Austausches} von {Denk}-{Positionen} zwischen {Physikern}, {Dichtern} und {Literaturwissenschaftlern}. {Einleitung}},
volume = {1},
year = {2015}
}
@book{faucris.116301724,
editor = {Lubkoll, Christine and Mecke, Klaus and Heydenreich, Aura},
faupublication = {yes},
publisher = {De Gruyter},
title = {{ELINAS} {Schriftenreihe}},
year = {2015}
}
@article{faucris.112526744,
abstract = {We simulate the self-propulsion of devices in a fluid in the regime of low Reynolds numbers. Each device consists of three bodies (spheres or capsules) connected with two damped harmonic springs. Sinusoidal driving forces compress the springs which are resolved within a rigid body physics engine. The latter is consistently coupled to a 3D lattice Boltzmann framework for the fluid dynamics. In simulations of three-sphere devices, we find that the propulsion velocity agrees well with theoretical predictions. In simulations where some or all spheres are replaced by capsules, we find that the asymmetry of the design strongly affects the propelling efficiency.},
author = {Pickl, Kristina and Götz, Jan and Iglberger, Klaus and Pande, Jayant and Mecke, Klaus and Smith, Ana-Suncana and Rüde, Ulrich},
doi = {10.1016/j.jocs.2012.04.009},
faupublication = {yes},
journal = {Journal of Computational Science},
note = {UnivIS-Import:2015-03-09:Pub.2011.tech.IMMD.lsinfs.allgoo},
pages = {374-387},
peerreviewed = {Yes},
title = {{All} good things come in threes - {Three} beads learn to swim with lattice {Boltzmann} and a rigid body solver},
url = {http://arxiv.org/abs/1108.0786v1},
volume = {3},
year = {2012}
}
@article{faucris.110310684,
abstract = {Nuclear matter under the conditions of a supernova explosion unfolds into a rich variety of spatially structured phases, called nuclear pasta. We investigate the role of periodic networklike structures with negatively curved interfaces in nuclear pasta structures, by static and dynamic Hartree-Fock simulations in periodic lattices. As the most prominent result, we identify for the first time the single gyroid network structure of cubic chiral I4(1)23 symmetry, a well-known configuration in nanostructured soft-matter systems, both as a dynamical state and as a cooled static solution. Single gyroid structures form spontaneously in the course of the dynamical simulations. Most of them are isomeric states. The very small energy differences from the ground state indicate its relevance for structures in nuclear pasta.},
author = {Schuetrumpf, Bastian and Klatt, Michael and Iida, K. and Schröder-Turk, Gerd and Maruhn, J. A. and Mecke, Klaus and Reinhard, Paul-Gerhard},
doi = {10.1103/PhysRevC.91.025801},
faupublication = {yes},
journal = {Physical Review C},
peerreviewed = {Yes},
title = {{Appearance} of the single gyroid network phase in "nuclear pasta" matter},
volume = {91},
year = {2015}
}
@article{faucris.122455124,
abstract = {Motivated by the possibility of universal quantum computation under noise perturbations, we compute the phase diagram of the two-dimensional (2D) cluster state Hamiltonian in the presence of Ising terms and magnetic fields. Unlike in previous analysis of perturbed 2D cluster states, we find strong evidence of a very well-defined cluster phase, separated from a polarized phase by a line of first-and second-order transitions compatible with the 3D Ising universality class and a tricritical end point. The phase boundary sets an upper bound for the amount of perturbation in the system so that its ground state is still useful for measurement-based quantum computation purposes. Moreover, we also compute the local fidelity with the unperturbed 2D cluster state. Besides a classical approximation, we determine the phase diagram by combining series expansion and variational infinite projected entangled-pair states methods. Our work constitutes an analysis of the nontrivial effect of few-body perturbations in the 2D cluster state, which is of relevance for experimental proposals.},
author = {Orus, Roman and Kalis, Henning and Bornemann, Marcel and Schmidt, Kai Phillip},
doi = {10.1103/PhysRevA.87.062312},
faupublication = {no},
journal = {Physical Review A},
peerreviewed = {Yes},
title = {{Bounds} on universal quantum computation with perturbed two-dimensional cluster states},
volume = {87},
year = {2013}
}
@article{faucris.110372284,
abstract = {In this article, the third of three, we analyse how the Weyl quantisation for compact Lie groups presented in the second article of this series fits with the projective-phase space structure of loop quantum gravity-type models. Thus, the proposed Weyl quantisation may serve as the main mathematical tool to implement the program of space adiabatic perturbation theory in such models. As we already argued in our first article, space adiabatic perturbation theory offers an ideal framework to overcome the obstacles that hinder the direct implementation of the conventional Born-Oppenheimer approach in the canonical formulation of loop quantum gravity. Published by AIP},
author = {Stottmeister, Alexander and Thiemann, Thomas},
doi = {10.1063/1.4960823},
faupublication = {yes},
journal = {Journal of Mathematical Physics},
peerreviewed = {Yes},
title = {{Coherent} states, quantum gravity, and the {Born}-{Oppenheimer} approximation. {III}.: {Applications} to loop quantum gravity},
volume = {57},
year = {2016}
}
@incollection{faucris.124124044,
abstract = {
I propose a theoretical model of genre with parameters organized in terms of the concept of “frame.” The model has three nested frames: a sociocognitive action frame contains a rhetorical situation frame, which contains a discourse structure frame. I motivate the model in relation to existing research on both literary and extraliterary genres, sketch its advantages and the lines of research it suggests, then address challenges to it. First, to clarify how genre relates to language, discourse and cognition, and my investments in various research areas, I review major conundrums about genre identity. Second, I argue for an inclusive approach to genres, as against defining “genre” to suit assumptions and methods. Third, I discuss the broader conception of discourse structure and sequencing that this inclusive approach entails. Fourth, I investigate frame-based sequencing in text composition—specifically, how poets adapt everyday genre frames for literary purposes.

I propose a theoretical model of genre with parameters organized in terms of the concept of “frame.” The model has three nested frames: a sociocognitive action frame contains a rhetorical situation frame, which contains a discourse structure frame. I motivate the model in relation to existing research on both literary and extraliterary genres, sketch its advantages and the lines of research it suggests, then address challenges to it. First, to clarify how genre relates to language, discourse and cognition, and my investments in various research areas, I review major conundrums about genre identity. Second, I argue for an inclusive approach to genres, as against defining “genre” to suit assumptions and methods. Third, I discuss the broader conception of discourse structure and sequencing that this inclusive approach entails. Fourth, I investigate frame-based sequencing in text composition—specifically, how poets adapt everyday genre frames for literary purposes.

},
address = {Berlin},
author = {Sinding, Michael},
booktitle = {Genre in Language, Discourse and Cognition},
doi = {10.1515/9783110469639},
editor = {Ninke Stukker, Wilbert Spooren and Gerard Steen},
faupublication = {yes},
isbn = {978-3-11-046963-9},
keywords = {genre; cognition; frame; sociocognitive action; rhetorical situation; discourse structure},
pages = {305 - 330},
peerreviewed = {Yes},
publisher = {De Gruyter},
series = {Applications of Cognitive Linguistics},
title = {“{A} {Triple}-{Frame} {Model} of {Genre}: {Framing} for {Discourse} {Sequencing}.”},
url = {https://www.degruyter.com/view/product/468793},
volume = {33},
year = {2016}
}
@article{faucris.108546284,
abstract = {We analyze the properties of low-energy bound states in the transverse-field Ising model and in the XXZ model on the square lattice. To this end, we develop an optimized implementation of perturbative continuous unitary transformations. The Ising model is studied in the small-field limit which is found to be a special case of the toric code model in a magnetic field. To analyze the XXZ model, we perform a perturbative expansion about the Ising limit in order to discuss the fate of the elementary magnon excitations when approaching the Heisenberg point.},
author = {Dusuel, Sebastien and Kamfor, Michael and Schmidt, Kai Phillip and Thomale, Ronny and Vidal, Julien},
doi = {10.1103/PhysRevB.81.064412},
faupublication = {no},
journal = {Physical Review B},
peerreviewed = {Yes},
title = {{Bound} states in two-dimensional spin systems near the {Ising} limit: {A} quantum finite-lattice study},
volume = {81},
year = {2010}
}
@incollection{faucris.200320230,
abstract = {Prof. Dr. Klaus Mecke ist theoretischer Physiker, Dr. Aura Heydenreich Germanistin. Gemeinsam forschen sie am Erlanger Zentrum für Literatur und Naturwissenschaft (ELINAS), einem interdisziplinären Forum, das sich dem wechselseitigen Wissenstransfer zwischen Physik und Literatur widmet. Ein Gespräch über die Bedeutung der Metapher für die Physik, das poetologisczhe Potential naturwissenschaftlicher Forschung und das Klischee des einsamen Genies.

Ru-based supported ionic liquid phase (SILP) systems efficiently catalyze the low-temperature water-gas

shift reaction (WGSR). While previous studies suggest that Ru-carbonyl species play an important role in

the mechanism, detailed knowledge on the catalytically active species is still missing. To identify these carbonyl

complexes, we apply in situ diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) in

combination with density functional theory (DFT). Investigations of an as-prepared [R(CO)3Cl2]2/

[C4C1C1Im]Cl/Al2O3 catalyst indicate splitting of the dimer induced by Cl−. Subsequently, an equilibrium between

several [R(CO)xCly]n species is established, in which the IL serves as an effectively infinite Cl− reservoir.

We find that the major species in the system freshly-prepared from [R(CO)3Cl2]2 is indeed

[R(CO)3Cl3]−. A smaller amount of [R(CO)2Cl3]− and chloride-rich species [R(CO)2Cl4]2− or [RuCOCl4]2−

are also found in the SILP. Similar Ru-carbonyl species are observed during carbonylation of RuCl3/

[C4C1C1Im]Cl/Al2O3, another potential WGSR catalyst. The response of [Ru(CO)3Cl2]2/[C4C1C1Im]Cl/Al2O3

to heating and/or CO dosing was probed in situ and the results confirm the presence of the equilibrium

proposed above.

},
author = {Bauer, Tanja and Stepic, Robert and Wolf, Patrick and Kollhoff, Fabian and Karawacka, Weronica and Wick, Christian and Haumann, Marco and Wasserscheid, Peter and Smith, David M. and Smith, Ana-Suncana and Libuda, Jörg},
doi = {10.1039/C7CY02199B},
faupublication = {yes},
journal = {Catalysis: Science and Technology},
keywords = {SILP catalysis ; in situ IR spectroscopy ; [Ru(CO)xCly]n species},
month = {Jan},
pages = {344-357},
peerreviewed = {Yes},
title = {{Dynamic} equilibria in supported ionic liquid phase ({SILP}) catalysis: in situ {IR} spectroscopy identifies [{Ru}({CO}){xCly}]n species in water gas shift catalysis},
volume = {8},
year = {2018}
}
@article{faucris.123312904,
abstract = {lattice model of random surfaces is studied including configurations with arbitrary topologies, overhangs and bubbles. The Hamiltonian of the surface includes a term proportional to its area and a scale-invariant integral of the squared mean curvature. We propose a discretization of the curvature which ensures the scale-invariance of the bending energy on the lattice. Nonperturbative renormalization groups for the surface tension and the bending rigidity are applied, which are also valid at high temperatures and scales above the persistence length. We find at vanishing surface tensions a closed expression for the scale dependent rigidity including the usual logarithmic decay at low temperatures. Different scaling behaviours at non-vanishing tensions occur yielding characteristic length scales, which determine the structure of homogeneous droplet, lamellar, and microemulsion phases.},
author = {Mecke, Klaus},
faupublication = {no},
journal = {Zeitschrift für Physik B Condensed Matter},
pages = {379-387},
peerreviewed = {Yes},
title = {{BENDING} {RIGIDITY} {OF} {FLUCTUATING} {MEMBRANES}},
volume = {97},
year = {1995}
}
@article{faucris.118199884,
abstract = {A theoretical approach has been undertaken in order to model the thermodynamic equilibrium of a 3D vesicle adhering to a flat substrate. The vesicle is treated in a canonical description with a fixed number of sites. A finite number of these sites are occupied by mobile ligands that are capable of interacting with a discrete number of receptors immobilized on the substrate. Explicit consideration of the bending energy of the vesicle shape has shown that the problem of the vesicle shape can be decoupled from the determination of the optimum allocation of ligands over the vesicle. The allocation of bound and free ligands in the vesicle can be determined as a function of the size of the contact zone, the ligand-receptor binding strength, and the concentration of the system constituents. Several approximate solutions for different regions of system parameters are determined and in particular, the distinction between receptor- and ligand-dominated equilibria is found to be important. The crossover between these two types of solutions is found to occur at a critical size of the contact zone. The presented approach enables the calculation of the effective adhesion strength of the vesicle and thus permits meaningful comparisons with relevant experiments as well as connecting the presented model with the proven success of the continuum approach for modeling the shapes of adhering vesicles. The behavior of the effective adhesion strength is analyzed in detail and several approximate expressions for it are given.},
author = {Smith, Ana-Suncana and Seifert, Udo},
doi = {10.1103/PhysRevE.71.061902},
faupublication = {no},
journal = {Physical Review E},
keywords = {CELL-ADHESION; SHAPE TRANSFORMATIONS; PHASE-SEPARATION; MEMBRANES; THERMODYNAMICS; COMPETITION; TRANSITION; REPULSION; STICKERS; MODELS},
peerreviewed = {Yes},
title = {{Effective} adhesion strength of specifically bound vesicles},
url = {http://journals.aps.org/pre/pdf/10.1103/PhysRevE.71.061902},
volume = {71},
year = {2005}
}
@article{faucris.118693344,
abstract = {Individual colloidal particles have been studied experimentally in a one dimensional random potential with energies that follow a Gaussian distribution. This rough, noise-like potential has been realised using a holographic optical set-up, which allows the width of the distribution to be varied. For different widths, the particle trajectories were followed and the particle dynamics characterised by, for example, the mean square displacement, non-Gaussian parameter, van Hove function, time-dependent diffusion coefficient and residence time distribution. The values obtained for these observables are consistent with the static properties of the system, in particular the barrier height distribution, which was obtained by a detailed characterisation of the tweezer-like set-up. The dynamics display three distinct behaviours: at short times normal diffusion, subsequently an extended regime of localisation within the different minima of the potential and finally a very slow approach towards long-time diffusive behaviour, for which diffusion coefficients consistent with theoretical predictions have been found.},
author = {Hanes, Richard and Dalle-Ferrier, Cecile and Schmiedeberg, Michael and Jenkins, Mathew and Egelhaaf, Stefan},
doi = {10.1039/c2sm07102a},
faupublication = {no},
journal = {Soft Matter},
month = {Jan},
pages = {2714-2723},
peerreviewed = {Yes},
title = {{Colloids} in one dimensional random energy landscapes},
volume = {8},
year = {2012}
}
@article{faucris.108807204,
abstract = {We explore the effective potential landscapes that extended particles experience when adsorbed on the surface of quasicrystals. Commonly, these are solids with long-ranged order but no translational symmetry. The effective potentials significantly depend on the size of the adsorbed particles. We show how changing the particle radius changes the so-called local isomorphism class of the effective quasicrystalline pattern. This means effective potentials for different particle sizes cannot directly be mapped onto each other. Our theoretical predictions are confirmed by Monte Carlo simulations. The results are important for colloidal particles with different sizes that are subjected to laser fields with quasicrystalline symmetry as well as for systems where extended molecules are deposited onto the surface of metallic quasicrystals.},
author = {Rühle, Felix and Sandbrink, Matthias and Stark, Holger and Schmiedeberg, Michael},
doi = {10.1140/epje/i2015-15054-y},
faupublication = {no},
journal = {European Physical Journal E},
peerreviewed = {Yes},
title = {{Effective} substrate potentials with quasicrystalline symmetry depend on the size of the adsorbed particles},
volume = {38},
year = {2015}
}
@book{faucris.120772124,
address = {Erlangen},
editor = {Ernst, Joseph Felix and Heydenreich, Aura and Krömer, Philip and Mecke, Klaus},
faupublication = {yes},
isbn = {978-3-946120-66-7},
peerreviewed = {automatic},
publisher = {homunculus verlag},
series = {Seitenstechen},
title = {{Dunkle} {Energie}},
volume = {2},
year = {2016}
}
@inproceedings{faucris.123189924,
abstract = {A new method of characterising the morphology of disordered systems is presented based on the evolution of a family of integral geometric measures during erosion and dilation operations. The method is used to determine the accuracy of model reconstructions of random systems. It is shown that the use of erosion/dilation operations on the original image leads to an accurate discrimination of morphology. We consider the morphology of an experimental system and use the method to optimally match a reconstructed model morphology. (C) 2004 Elsevier B.V. All rights reserved.},
author = {Mecke, Klaus and et al.},
author_hint = {Arns CH, Knackstedt MA, Mecke KR},
doi = {10.1016/j.colsurfa.2004.04.034},
faupublication = {no},
keywords = {porous media;morphology;Euler number;Minkowski functional},
pages = {351-372},
peerreviewed = {Yes},
publisher = {ELSEVIER SCIENCE BV},
support_note = {Author relations incomplete. You may find additional data in field 'author_hint'},
title = {{Characterisation} of irregular spatial structures by parallel sets and integral geometric measures},
volume = {241},
year = {2004}
}
@article{faucris.110313104,
abstract = {In a previous publication [R. Wittmann, M. Marechal, and K. Mecke, Europhys. Lett. 109, 26003 (2015)], we introduced fundamental mixed measure theory (FMMT) for mixtures of anisotropic hard bodies, which shows that earlier results with an empirical parameter are inaccurate. Now we provide a deeper insight into the background of this theory in integral geometry. We study the Frank elastic coefficients in the nematic phase of the hard spherocylinder fluid. The framework of FMMT provides us with the required direct correlation function without additional input of an equation of state. A series representation of the mixed measure gives rise to closed analytical formulas for the elastic constants that only depend on the density, order parameters, and the particle geometry, pointing out a significant advantage of our geometry-based approach compared to other density functionals. Our elastic coefficients are in good agreement with computer simulations and increase with the density and the nematic order parameter. We confirm earlier mean-field predictions in the limits of low orientational order and infinitely long rods.},
author = {Wittmann, Rene and Marechal, Mattheus and Mecke, Klaus},
doi = {10.1103/PhysRevE.91.052501},
faupublication = {yes},
journal = {Physical Review E},
peerreviewed = {Yes},
title = {{Elasticity} of nematic phases with fundamental measure theory},
volume = {91},
year = {2015}
}
@article{faucris.123188164,
abstract = {A highly hydrated lipid bilayer, floating a few A above another one adsorbed on a smooth solid substrate, was prepared at room temperature where lipids (DSPC) are in gel phase, then heated at several temperatures including the pretransitional temperature T-p and the chain melting temperature T-m. A precise in situ characterization by neutron reflectivity led to two new results. First, even when in fluid phase the floating bilayer was structured and stable; it thus provides a flexible model system for physical and biophysical studies of membranes. Second, at intermediate temperatures, a spectacular maximum in both inter-bilayer distance and bilayer roughness was simultaneously observed. It might be a, direct observation of the balance between energy minimization and entropic repulsion, leading to an estimation of the dimensionless parameter (k(B)T)(2)/A(kappa), where A is the Hamacker constant; and kappa the bending modulus.},
author = {Mecke, Klaus and et al.},
author_hint = {Fragneto G, Charitat T, Graner F, Mecke K, Perino-Gallice L, Bellet-Amalric E},
faupublication = {no},
journal = {EPL - Europhysics Letters},
month = {Jan},
pages = {100-106},
peerreviewed = {Yes},
support_note = {Author relations incomplete. You may find additional data in field 'author_hint'},
title = {{A} fluid floating bilayer},
volume = {53},
year = {2001}
}
@misc{faucris.106305364,
abstract = {Living systems are constantly being driven out of equilibrium by consuming energy. Studying fluctuations can tell us how they do so while maintaining order --- and what this teaches us about non-equilibrium processes in general.},
author = {Smith, Ana-Suncana},
doi = {10.1038/nphys3703},
faupublication = {yes},
peerreviewed = {automatic},
title = {{BIOPHYSICS} {Alive} and twitching},
year = {2016}
}
@article{faucris.213304818,
abstract = {Starting from three-dimensional volume data of a granular packing, as, e.g., obtained by X-ray Computed Tomography, we discuss methods to first detect the individual particles in the sample and then analyze their properties. This analysis includes the pair correlation function, the volume and shape of the Voronoi cells, and the number and type of contacts formed between individual particles. We mainly focus on packings of monodisperse spheres, but we will also comment on other monoschematic particles such as ellipsoids and tetrahedra. This paper is accompanied by a package of free software containing all programs (including source code) and an example three-dimensional dataset which allows the reader to reproduce and modify all examples given.},
author = {Weis, Simon and Schröter, Matthias},
doi = {10.1063/1.4983051},
faupublication = {yes},
journal = {Review of Scientific Instruments},
note = {EAM Import::2019-03-13},
peerreviewed = {Yes},
title = {{Analyzing} {X}-ray tomographies of granular packings},
volume = {88},
year = {2017}
}
@article{faucris.124179924,
abstract = {Using microscopic dynamical density functional theory, we calculate the dynamical formation of polycrystals by following the crystal growth around multiple crystalline seeds imposed to an undercooled fluid. Depending on the undercooling and the size ratio as well as the relative crystal orientation of two neighboring seeds, three possibilities of the final state emerge, namely no crystallization at all, formation of a monocrystal, or two crystallites separated by a curved grain boundary. Our results, which are obtained for two-dimensional hard disk systems using a fundamental-measure density functional, shed new light on the particle-resolved structure and growth of polycrystalline material in general.},
author = {Neuhaus, Tim and Schmiedeberg, Michael and Löwen, Hartmut},
doi = {10.1103/PhysRevE.88.062316},
faupublication = {no},
journal = {Physical Review E},
peerreviewed = {Yes},
title = {{Crystallization} induced by multiple seeds: {Dynamical} density functional approach},
volume = {88},
year = {2013}
}
@article{faucris.108556624,
abstract = {We study the gapped phase of the Kitaev model on the honeycomb lattice using perturbative continuous unitary transformations. The effective low-energy Hamiltonian is found to be an extended toric code with interacting anyons. High-energy excitations are emerging free fermions which are composed of hard-core bosons with an attached string of spin operators. The excitation spectrum is mapped onto that of a single particle hopping on a square lattice in a magnetic field. We also illustrate how to compute correlation functions in this framework. The present approach yields analytical perturbative results in the thermodynamical limit without using the Majorana or the Jordan-Wigner fermionization initially proposed to solve this problem.},
author = {Schmidt, Kai Phillip and Dusuel, Sebastien and Vidal, Julien},
doi = {10.1103/PhysRevLett.100.057208},
faupublication = {no},
journal = {Physical Review Letters},
peerreviewed = {Yes},
title = {{Emergent} fermions and anyons in the {Kitaev} model},
volume = {100},
year = {2008}
}