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通过差分方位脉冲源方法同时,非接触测量液体和接口热性能
1School of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan, Hubei 430074, China.
Langmuir : the ACS journal of surfaces and colloids
|September 18, 2025
概括
一种新的微分方位脉冲源 (DSPS) 方法使液体热特性和固体-液体界面导电性的非接触测量成为可能. 这种技术为先进的热管理提供了精确的特征,没有先前的液体数据.
科学领域:
- 材料科学 材料科学 材料科学
- 热力学是一种热力学.
- 纳米技术纳米技术
背景情况:
- 准确的热传输特性对于微/纳米级热管理至关重要.
- 现有的方法通常需要预定义的液体特性,并且缺乏对高界面导电性的灵敏度.
研究的目的:
- 开发一种非接触式方法,用于同时测量液体导热率,体积热容量和固体-液体界面导电.
- 克服现有技术的局限性,不需要对液体性质的先验知识.
主要方法:
- 使用差异方位脉冲源 (DSPS) 方法,采用双频激发和现场基板引用.
- 在包括油,滑剂,电解质和水在内的各种液体中验证了协议.
- 使用数值模拟来评估方法的稳定性和不确定性.
主要成果:
- 实现了大量液体特性和界面导电性的同时,非接触测量.
- 展示了高灵敏度和稳定性,在界面导电性中典型的不确定性为~8%.
- 通过表面修饰 (上的六基) 显示了接口导电量的显著调整 (16倍增加).
结论:
- DSPS方法提供了一种多功能工具,可以在没有先前的液体参数知识的情况下对固体液体接口进行表征.
- 像振动不匹配和离子分层这样的界面现象显著影响热传输.
- 表面湿透性和化学功能化为工程界面导热提供了直接途径,适用于热界面凝及其他领域.
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