上海交通大学学报(自然版) ›› 2012, Vol. 46 ›› Issue (07): 1159-1162.

• 物理学 • 上一篇    下一篇

一维热波法测量薄膜纵向热扩散系数  

沈超,曾志刚,沈斌杰,胡志宇   

  1. (上海大学 纳微能源研究所, 上海 200444)
  • 收稿日期:2011-09-05 出版日期:2012-07-30 发布日期:2012-07-30
  • 基金资助:

    科技部国际合作项目(2009DFB60160),上海市科委资助项目(10520710400、10PJ1403800、0852NM01700 、08160706000)

Measurement of Cross-plane Thermal Diffusivity of Thin-Films by Thermal Wave Method

 SHEN  Chao, ZENG  Zhi-Gang, SHEN  Bin-Jie, HU  Zhi-Yu   

  1. (Institute of NanoMicro Energy,Shanghai University, Shanghai 200444,China)
  • Received:2011-09-05 Online:2012-07-30 Published:2012-07-30

摘要: 针对薄膜样品的纵向热扩散系数测量的困难性,研究了利用稳态纵向热流法(SCHF)的测量结构和Angstrm法的一维热波理论相结合的方法,分析了热波在样品中传播的过程,并导出了样品的纵向热扩散系数.文中测量了厚度为30 μm~1 mm的聚四氟乙烯、聚氯乙烯和聚丙烯薄膜,结果表明,该方法是真实可信的. 

关键词: 热扩散系数, 热波, 纵向, 薄膜

Abstract: Considering the difficulty of measuring cross-plane thermal diffusivity of thin films, a new method of measuring the cross-plane thermal diffusivity of thin films was approached by combining the apparatus of steady-state comparative-longitudinal heat flow (SCHF) method and the one-dimensional thermal wave in Angstr-m method. The propagation of thermal wave was analyzed and the cross-plane thermal diffusivity of thin films was deduced. By this method, three types of thin films samples (PTFE, polyvinylchloride and polypropylene) with various thicknesses ranging from 30 μm-1 mm were tested and this method is reliable.

Key words: thermal diffusivity, thermal wave, cross-plane, thin-film

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