In-situ Characterization of Nanomaterials with Electrons, X-rays/Neutrons and Scanning Probes

Third Party Funds Group - Overall project


Project Details

Project leader:
Prof. Dr. Erdmann Spiecker


Contributing FAU Organisations:
Lehrstuhl für Werkstoffwissenschaften (Mikro- und Nanostrukturforschung)

Funding source: DFG / Graduiertenkolleg (GRK)
Acronym: GRK 1896
Start date: 01/10/2013
End date: 31/03/2018


Abstract (technical / expert description):


Research into innovative nanostructured materials is of fundamental importance for Germany’s technological competitiveness and in addressing global challenges, like the development of renewable energy sources. Nanostructured materials are controlled by size and interfaces, which give rise to enhanced mechanical properties and new physical effects leading in turn to new functionalities. The design of novel nanostructured materials and devices such as flexible electronics demands state-of-the-art nanocharacterisation tools. In particular, methods based on short-wave radiation (electrons, X-rays/neutrons) or scanning probes are ideally suited to analyse materials at the nanometer and atomic scale. Recently developed in situ capabilities and the use of complementary characterisation methods allow unique insights into the structure formation, functionality and deformation behaviour of complex nanostructures. These new in situ techniques will be the future key tools for the development of new materials and devices. The doctoral programme combines, for the first time, these three pillars of nanocharacterisation into a structured Research Training Group. The main objective of this programme is to provide the next generation of scientists and engineers with comprehensive, method-spanning and interdisciplinary training in the application of cutting-edge nanocharacterisation tools to materials and device development. Within the programme, the in situ methods will be further developed and used to address fundamental questions regarding the growth, stability and functionality of complex nanostructures and interfaces. Project area A "Functional Nanostructures and Networks" will address the properties of individual nano-objects and how these translate into functionality when assembled to nano-networks. In Project area B "Mechanical Properties of Interfaces" various kinds of interfaces with different bonding characteristics and morphologies will be studied in well-defined loading scenarios. This parallel, complementary study of both functional and mechanical materials properties over several length scales by multiple in situ methods is unprecedented. Our PhD candidates will be well-positioned in a network of international collaborations and highly trained in multiple, complementary techniques, providing them with an essential foundation for a successful career in the field of advanced materials and devices development.


Sub projects:

Structure-property relations of individual nanowires
Growth and stability of anisotropic nanoparticles in liquids
Nucleation, growth and degradation of anisotropic nanoparticles
Geometric and electronic structure of metal-organic nanowires
Electrical properties of nanowires and nanowire networks
Local leakage currents in nanoparticulate films
Mechanical switching of molecules on surfaces
Adhesion and friction of particles on model surfaces
Strength and toughness of interfaces at small scales
Sliding of incommensurate interfaces in layered compounds
Plasticity at interfaces in complex compounds
Atomistic simulation of mechanical properties of nanostructures and interfaces
Mechanische Eigenschaften und Bruchverhalten von dünnen Schichten


Publications
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Wu, M., Tafel, A., Hommelhoff, P., & Spiecker, E. (2019). Determination of 3D electrostatic field at an electron nano-emitter. Applied Physics Letters, 114(01), 013101. https://dx.doi.org/10.1063/1.5055227
Hutzler, A., Matthus, C., Dolle, C., Rommel, M., Jank, M.P.M., Spiecker, E., & Frey, L. (2019). Large-Area Layer Counting of Two-Dimensional Materials Evaluating the Wavelength Shift in Visible-Reflectance Spectroscopy. Journal of Physical Chemistry C. https://dx.doi.org/10.1021/acs.jpcc.9b00957
Hutzler, A., Fritsch, B., Jank, M.P.M., Branscheid, R., Spiecker, E., & März, M. (2019). Preparation of Graphene-Supported Microwell Liquid Cells for In Situ Transmission Electron Microscopy. Journal of Visualized Experiments, 149. https://dx.doi.org/10.3791/59751
Schwenger, J., Romeis, S., Herre, P., Yokosawa, T., Finsel, M., Leib, E.W.,... Peukert, W. (2019). Pressure induced local phase transformation in nanocrystalline tetragonal zirconia microparticles. Scripta Materialia, 163, 86-90. https://dx.doi.org/10.1016/j.scriptamat.2018.12.035
Hutzler, A. (2018). Development of advanced liquid cell architectures for high performance in situ transmission electron microscopy in materials sciences (Dissertation).
Steidl, M., Wu, M., Peh, K., Kleinschmidt, P., Spiecker, E., & Hannappel, T. (2018). Impact of N Incorporation on VLS Growth of GaP(N) Nanowires Utilizing UDMH. Nanoscale Research Letters, 13, 417. https://dx.doi.org/10.1186/s11671-018-2833-6
Hutzler, A., Matthus, C., Rommel, M., Jank, M., & Frey, L. (2018). Large-Area Layer Counting of 2D Materials via Visible Reflection Spectroscopy. In Proceedings of the 19th International Microscopy Congress (IMC19). Sydney, AU.
Hutzler, A., Schmutzler, T., Jank, M.P.M., Branscheid, R., Unruh, T., Spiecker, E., & Frey, L. (2018). Unravelling the Mechanisms of Gold−Silver Core−Shell Nanostructure Formation by in Situ TEM Using an Advanced Liquid Cell Design. Nano Letters, 18(11), 7222 - 7229. https://dx.doi.org/10.1021/acs.nanolett.8b03388
Hutzler, A., Branscheid, R., Schmutzler, T., Jank, M., Frey, L., & Spiecker, E. (2017). Controlled silver-shell growth on gold nanorods studied by in situ liquid cell TEM techniques. In Microscopy Conference 2017 (MC 2017) - Proceedings (pp. 600 - 601). Lausanne, CH.
Zhang, L., Wu, M., Chen, X., Wu, X., Spiecker, E., Song, Y.,... Wang, S. (2017). Nanoscale distribution of Bi atoms in InP1−xBix. Scientific Reports, 7, 12278. https://dx.doi.org/10.1038/s41598-017-12075-2

Last updated on 2018-22-11 at 18:01