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Thermal Behavior in a Multi-Layer Metal Thin-Film With Interfacial Contact Conductance by the Parabolic Two-Step Model

[+] Author Affiliations
Tsung-Wen Tsai, Yung-Ming Lee

Feng Chia University, Taichung, Taiwan, R.O.C.

Paper No. MNHT2008-52168, pp. 461-466; 6 pages
  • ASME 2008 First International Conference on Micro/Nanoscale Heat Transfer
  • ASME 2008 First International Conference on Micro/Nanoscale Heat Transfer, Parts A and B
  • Tainan, Taiwan, June 6–9, 2008
  • Conference Sponsors: Nanotechnology Institute
  • ISBN: 0-7918-4292-4 | eISBN: 0-7918-3813-7
  • Copyright © 2008 by ASME


The effect of the contact conductance on micro-scale heat transport in a multi-layered metal thin-film subjected to ultra-fast pulse laser heating is investigated in this study. The interfacial contact conductance existing at the interface is included in the analysis. The parabolic two-step (PTS) model is applied to predict the electron and lattice temperature. The equations can be solved by Laplace transform and the Riemann-sum approximation. The results show that the contact conductance plays an important role in the micro-scale heat transport processes for a multi-layered metal thin-film. Hence, in order to eliminate the thermal failure of the surface layer, the thermal resistance existing at the interface should be as small as possible.

Copyright © 2008 by ASME



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