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

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Wirth, J., Lenz, M., Englisch, S., Rosiwal, J., Weiser, M., Apeleo Zubiri, B.,... Spiecker, E. (2019). Correlative 3D Characterization of High Temperature Oxide Scales on Co-Base Superalloys Using Nano-CT and FIB/SEM Tomography. (pp. 390-391). Cambridge University Press.
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.
Hutzler, A., Fritsch, B., Jank, M., Branscheid, R., Martens, R., Spiecker, E., & März, M. (2019). In Situ Liquid Cell TEM Studies on Etching and Growth Mechanisms of Gold Nanoparticles at a Solid-Liquid-Gas Interface. Advanced Materials Interfaces.
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, 123, 9192 - 9201.
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.
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.
Englisch, S., Wirth, J., Przybilla, T., Apeleo Zubiri, B., Wang, J., Vogel, N., & Spiecker, E. (2019). Scale-Bridging 3D-Analysis of Colloidal Clusters Using 360° Electron Tomography and X-Ray Nano-CT. (pp. 392-393-393). Cambridge University Press.
Apeleo Zubiri, B., Weissenberger, T., Przybilla, T., Wirth, J., Englisch, S., Drobek, D.,... Spiecker, E. (2019). Scale-Bridging 3D Analysis of Micro-/Macroporous Zeolite Particles Using X-Ray Nano-Tomography and Electron Tomography. (pp. 396-397-397). Cambridge University Press.
Wirth, J., Englisch, S., Wiktor, C., Taccardi, N., Apeleo Zubiri, B., Wasserscheid, P., & Spiecker, E. (2019). Structural Analysis of Liquid Metal Catalysts in Porous Silica Utilizing Nano-CT and Analytical Transmission Electron Microscopy. (pp. 422-423-423). Cambridge University Press.
Wirth, J., Englisch, S., Wiktor, C., Taccardi, N., Wasserscheid, P., & Spiecker, E. (2018). Correlative 3D-Characterization of Liquid Metal Catalysts (LMC) utilizing X-ray and Analytical Electron Microscopy. In Microscopy Society of America 2018 (Eds.), Microscopy & Microanalysis 2018 (pp. 556-557). Saskatoon, Saskatchewan, Canada, CA.

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