| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
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| Symposium
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Advances and Discoveries in Non-equilibrium Driven Nanomaterials and Thin Films
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| Presentation Title |
Laser Processing in the Transmission Electron Microscope |
| Author(s) |
Gerd Duscher, Chenze Liu, Yu-Chuan Lin, Yueying Wu, Philip D Rack, Mathew F. Chisholm, Alexander A Pureztky, David B Geohegan |
| On-Site Speaker (Planned) |
Gerd Duscher |
| Abstract Scope |
Laser processing in a transmission electron microscope (TEM) enables the continuous observation of crystallization of amorphous or nano-crystalline precursors from nucleation to materials far from equilibrium. The prototype system by Waviks, Inc. consists of laser diodes coupled to single mode optic fibers which function as a micromanipulator. Here we will report the growth of 2D materials on different substrates and synthesis of phase-separated bi-metallic nanoparticles.
The beauty of the system is that synthesis can be observed in-situ with atomic resolution imaging, diffraction and/or EELS.
This setup can also be used as a pump-probe system in which the photons excite states that then can be probed with the electron beam through monochromated EELS. In the case of a photonic nano-crystalline system the evanescent light field enhanced by a plasmon can then create stimulated emission and stimulated absorption of electrons, and thus allows to discriminate optical bright from dark plasmon modes.
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| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |