Temperature dependence of Young’s modulus of Ag microwhiskers was determined by a laser Doppler vibrometer. The Ag whiskers with diameters in sub-microns were synthesized by the use of physical vapor deposition (PVD). They have a five-fold twinned structure grown along the [1 1 0] direction. The temperature coefficient of Young’s modulus was measured to be 485.0 ± 16.8 ppm/K in the range of 300 K to 650 K. The measured values are very close to the reported values of 410 ∼ 449 ppm/K for bulk Ag single crystals. This finding can benefit the design of Ag-based micro/nano-electromechanical systems or micro/nano-interconnectors operated at elevated or lowered temperatures.

中文翻译：

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激光多普勒振动测量法测定银微晶须杨氏模量的温度系数

Ag 微晶须的杨氏模量的温度依赖性由激光多普勒测振仪确定。通过使用物理气相沉积 (PVD) 合成直径为亚微米的银晶须。它们具有沿 [1 1 0] 方向生长的五重孪生结构。杨氏模量的温度系数测量为485.0 ± 16.8ppm/K 在 300 K 到 650 K 的范围内。测量值非常接近报告的值410 ～ 449用于块状 Ag 单晶的 ppm/K。这一发现有助于设计基于 Ag 的微/纳米机电系统或在升高或降低温度下运行的微/纳米互连器。