Extreme Ultraviolet Measurements of Thermal and Elastic Dynamics in Nanostructured Media

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Travis Frazer / JILA, K&M group
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Nanoscale materials are fundamentally different from bulk materials. From heat flow over distances too short for heat carriers to scatter, to elastic properties that change due to surface effects, there is much to explore in this mesoscopic regime where both theoretical and computational approaches are challenging. For my thesis, I have used coherent, extreme ultraviolet beams to directly measure the nanoscale thermal and elastic properties of systems ranging from single crystal silicon to complex, self-assembled metamaterials. The phenomena observed have applications ranging from heat management in electronics to thermoelectrics for waste heat recovery.