双波长飞秒激光,">光热反射法,">声学失配,纳米薄膜,界面热阻," /> 双波长飞秒激光,">光热反射法,">声学失配,纳米薄膜,界面热阻,"/> dual-colorfemosecond laser,thermal boundary resistance,acoustic mismatch,"/> <span style="font-size: 10.5pt;">Application of femtosecond laser TDTR method in thermal boundary resistance of nano-film</span>

SHANDONG SCIENCE ›› 2016, Vol. 29 ›› Issue (3): 35-39.doi: 10.3976/j.issn.1002-4026.2016.03.007

• Energy and Power • Previous Articles     Next Articles

Application of femtosecond laser TDTR method in thermal boundary resistance of nano-film

LI Feng-ming1 , LI Xiao-tong 2 , YUAN Kun-peng 2 , WANG Zhao-liang 2   

  1. 1.Department of Geothermal Resource Exploitation, Shengli Oilfield, Dongying 257500, China;2. Department of Energy and Power Engineering, China University of Petroleum, Qingdao 266580, China
  • Received:2016-03-30 Published:2016-06-20 Online:2016-06-20

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Abstract:

Thermalboundary resistance of nano-film is predominant in thermal transport process of nano-scale structure. Compared with metal nano-film, thermal transport process of nonmetal nano-film is more complicated. We measure thermal boundary resistance between metal, nonmetal nano-film and different dielectric substrates with improveddual-color femosecond laser time-domain thermoreflectance ( TDTR) method. Debye temperature ratio of film and substrate can serve as a measurement of acoustic mismatch degree. For the same Debye temperature ratio, thermal boundary resistance of nonmetal nano-film is about 2 ~3 times greater than that of metal nano-film. This is mainly because electric-phonon coupling enhances thermal transport capability of metal nano-film.

Key words: time-domain thermoreflectance, nano-film, dual-colorfemosecond laser')">dual-colorfemosecond laser, thermal boundary resistance, acoustic mismatch

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  • Cite this article

    LI Feng-ming,LI Xiao-tong,YUAN Kun-peng,WANG Zhao-liang . Application of femtosecond laser TDTR method in thermal boundary resistance of nano-film[J].SHANDONG SCIENCE, 2016, 29(3): 35-39.

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