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i n-situ cryogenic nano -mechanical tests

i n-situ cryogenic nano -mechanical tests. The world’s first time cryogenic nanomechanical measurement. Seok-Woo Lee (Postdoc). Current in-situ cryogenic mechanical testing set-up at Caltech (designed by L. Meza). Mechanical data acquisition. electron gun.

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i n-situ cryogenic nano -mechanical tests

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  1. in-situ cryogenic nano-mechanical tests The world’s first time cryogenic nanomechanical measurement Seok-Woo Lee (Postdoc) Current in-situ cryogenic mechanical testing set-up at Caltech (designed by L. Meza) Mechanical dataacquisition electron gun Temperaturecontroller (PID) : heater control Si diodetemperature sensors Indentertip sample heater Cu wire in Tip cooling assembly LN2or LHe Bi-polar heater Coldfinger 77 K 4 K out SEM chamber (UHV) Ceramic block

  2. in-situ cryogenic nano-mechanical tests Current in-situ cryogenic mechanical testing set-up at Caltech (designed by L. Meza) COLD!! Fundamental understanding of mechanical behavior of materials at low temperatures for space applications

  3. in-situ cryogenic nano-mechanical tests SIZE EFFECTS at different temperatures Nanopillar Size effects size-dependent strength What are you going to do with me? Welcome any enthusiastic SURF students !!! 1. Fabrication of nanostructures Seok-Woo Lee, swlee49@caltech.edu Different materials Different sizes 2. Nano-mechanical testing at different temperatures D 3. Data analysis (stress-strain) and fundamental understanding (atomistic, dislocation dynamics) Theoretical estimation for W S.-W. Lee et al. Phil. Mag. (2012)

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