Regensburg 2007 – wissenschaftliches Programm

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MM: Fachverband Metall- und Materialphysik

MM 14: SYM Micro- and Nanomechanics II

MM 14.3: Vortrag

Dienstag, 27. März 2007, 11:15–11:30, H16

Direct-Observation Nanomechanical Testing in a Transmission Electron Microscope — •Oden Warren and Ude Hangen — Hysitron, Inc., 10025 Valley View Road, Minneapolis, MN 55344, USA

The intense research interest in nanostructures and nanomaterials has resulted in a strong demand for direct-observation nanomechanical testing. Over the past two years, pioneering quantitative nanoindentation technology for in-situ experimentation in transmission electron microscopes has been developed. This technology has enabled direct investigation of microstructural changes occurring during nanoindentation, as well as direct investigation of the effects of nanocompression on electron-transparent nanostructures such as nanospheres and nanopillars. This presentation will provide examples of deformation mechanisms revealed by the combination of force-displacement curves and corresponding transmission electron microscopy movies. This synergistic combination of high-resolution techniques has led to a fuller appreciation of the fact that mechanical behavior at the true nanoscale is indeed rich and often counterintuitive.