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The critical shear stress (CSS) of gold nanocontacts (NCs) was estimated using a home-made in situ transmission electron microscopy holder equipped with a quartz length-extension resonator (LER) as a force… Click to show full abstract
The critical shear stress (CSS) of gold nanocontacts (NCs) was estimated using a home-made in situ transmission electron microscopy holder equipped with a quartz length-extension resonator (LER) as a force sensor. The LER was being oscillated at its resonance frequency utilizing frequency modulation method, enabled us to measure the dissipative energy in the NCs. From the LER amplitude dependence of dissipative energy, we determined the value of CSS to be 0.94 GPa. The dissipation was reproduced by applying this CSS value to a simple slip model with a hysteretic force–displacement curve, suggesting the possibility of elucidating the plastic deformation mechanism.
Journal Title: Applied Physics Express
Year Published: 2021
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