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飞秒激光热反射实验系统测量金属薄膜中的超快速热传递过程
  • ISSN号：0253-231X
  • 期刊名称：《工程热物理学报》
  • 时间：0
  • 分类：TK124[动力工程及工程热物理—工程热物理;动力工程及工程热物理—热能工程]
  • 作者机构：[1]清华大学航天航空学院,传热与能源利用北京市重点实验室,北京100084
  • 相关基金：国家自然科学基金资助项目（No.50676046;No.50730006）
作者： 王海东[1], 马维刚[1], 过增元[1], 张兴[1], 王玮[1]
关键词： 飞秒激光热反射实验系统, 纳米金属薄膜, 双温度模型, 非平衡热传导, femtosecond laser thermal reflection system, metallic nanofilms, two-temperature model, non-equilibrium heat conduction
中文摘要：

飞秒激光热反射技术已经成为研究不同材料中超快速热传导过程的有效实验方法。实验中采用前表面加热、后表面探测的方法对不同厚度的Au薄膜进行了测量,通过比较表面电子温度可以得到超快速激光加热条件下Au薄膜材料中电子温度振荡的传递速度。结果表明瞬态条件下非平衡态电子是热量的主要载体,根据实验测量值拟合得到的能量传递速度接近于非平衡态电子气热扩散模型中的温度振荡传播速度。瞬态条件下电子气中热量传递规律的深入研究有利于高集成度微电子器件的热优化设计和飞秒激光精密加工技术的发展。

英文摘要：

Femtosecond laser thermal reflection method has become an important experimental tool for studying the transient heat conduction in metals.We measured several Au films with different thicknesses using Front heating-Rear detecting method and obtained the propagation speed of electron temperature oscillation.The measured value agrees with the theoretical prediction of two-temperature model.The deep research into transient heat conduction process in metals is necessary for thermal design of microelectronic devices and development of femtosecond laser machining.

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期刊信息
  • 《工程热物理学报》
  • 中国科技核心期刊
  • 主管单位:中国科学院
  • 主办单位:中国工程热物理学会 中国科学院工程热物理研究所
  • 主编：徐建中
  • 地址：北京2706信箱
  • 邮编：100080
  • 邮箱：xb@mail.etp.ac.cn
  • 电话：010-62584937
  • 国际标准刊号：ISSN：0253-231X
  • 国内统一刊号：ISSN：11-2091/O4
  • 邮发代号:2-185
  • 获奖情况:
  • 中国期刊方阵“双效”期刊
  • 国内外数据库收录:
  • 美国化学文摘（网络版）,荷兰文摘与引文数据库,美国工程索引,日本日本科学技术振兴机构数据库,中国中国科技核心期刊,中国北大核心期刊（2004版）,中国北大核心期刊（2008版）,中国北大核心期刊（2011版）,中国北大核心期刊（2014版）,中国北大核心期刊（2000版）
  • 被引量:21026