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Critical shear stress of gold nanocontacts estimated by in situ transmission electron microscopy equipped with a quartz length-extension resonator
Applied Physics Express ( IF 2.3 ) Pub Date : 2021-06-23 , DOI: 10.35848/1882-0786/ac09bd
Jiaming Liu 1 , Jiaqi Zhang 1 , Toyoko Arai 2 , Masahiko Tomitori 1 , Yoshifumi Oshima 1
Affiliation  

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 0.94GPa. 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.



中文翻译:

通过配备石英长度延伸谐振器的原位透射电子显微镜估计金纳米接触的临界剪切应力

使用配备石英长度延伸谐振器 (LER) 作为力传感器的自制原位透射电子显微镜支架估计金纳米触点 (NC) 的临界剪切应力 (CSS)。LER 正在利用频率调制方法以其共振频率振荡,使我们能够测量 NC 中的耗散能量。根据耗散能量的 LER 幅度依赖性,我们确定 CSS 的值为 0.94GPa。通过将此 CSS 值应用于具有滞后力 - 位移曲线的简单滑移模型来重现耗散,这表明阐明塑性变形机制的可能性。

更新日期:2021-06-23
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