A Method of Studying the Effect of Stress and Thermal-stress Coupling on the Thermal Conductivity of the Film

Zhibin Li, Hairong Wang, Huiying Zhao, Hanqing Gu, Jiuhong Wang, Yizhen Ding
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Abstract

This paper designs a film stress device which can apply stress to the film attached to a substrate, and describes the detailed structure of the film stress device, the strain of the central region of the film can be equal, the film strain calculation method and the derivation process are given, it can adjust the strain of the film by controlling the feed displacement of the device. The testing system is designed by combining the film stress device with the 3ω method, it can be used to study the effect of stress and thermal-stress coupling on the thermal conductivity of the film, the 3ω thermal conductivity method is analyzed.
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一种研究应力和热应力耦合对薄膜导热性影响的方法
本文设计了一种能对附着在基板上的薄膜施加应力的薄膜应力装置,并详细介绍了薄膜应力装置的结构,薄膜中心区域的应变可以相等,给出了薄膜应变的计算方法和推导过程,它可以通过控制装置的进给位移来调节薄膜的应变。通过将薄膜应力装置与3ω法相结合设计了测试系统,可用于研究应力和热应力耦合对薄膜导热系数的影响,并对3ω导热系数法进行了分析。
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