About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
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Symposium
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Deformation Mechanisms, Microstructure Evolution, and Mechanical Properties of Nanoscale Materials
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Presentation Title |
In Situ Nano-identation of a Pt Nanoparticle Coupled with Bragg Coherent X-ray Diffraction Imaging |
Author(s) |
Sarah Yehya, Thomas Cornelius, Marie-Ingrid Richard, Felisa Berenguer, Eugen Rabkin, Olivier Thomas, Stéphane Labat |
On-Site Speaker (Planned) |
Sarah Yehya |
Abstract Scope |
Defects in nanocrystals have a critical influence on material properties, where a single defect can completely modify physical and chemical behavior. Here, we report on synchrotron experiments that consist of in situ annealing and indentation of Pt nanoparticles combined with Bragg coherent X-ray Diffraction Imaging (BCDI). This latter allows imaging the 3D structure of individual nano-objects with spatial resolution of 10 nm and picometer sensitivity of displacement fields and is well suitable to investigate the stability of defects in nanocrystals during mechanical loading. Selected nanoparticles were indented using a custom-built AFM in the intention of inducing defects in them at room temperature. Coherent diffraction patterns were also recorded continuously at room temperature as well as while annealing the sample under air for several nanoparticles. Thanks to BCDI it was possible to visualize the induced defects after indentation and their mobility in reconstructed Pt nanocrystals in 3D while annealing the sample. |
Proceedings Inclusion? |
Planned: |
Keywords |
Other, Other, Other |