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Author:

Liu, F. R. (Liu, F. R..) (Scholars:刘富荣) | Han, X. X. (Han, X. X..) | Bai, N. (Bai, N..) | Zhao, J. J. (Zhao, J. J..) | Chen, J. M. (Chen, J. M..) (Scholars:陈继民) | Lin, X. (Lin, X..)

Indexed by:

EI Scopus SCIE

Abstract:

In the paper, a three-dimensional finite element model was developed to demonstrate the temperature field induced by a nanosecond pulsed excimer laser in the phase-change film. The numerical model was established with an assumed rectangular temporal profile, following the continuous medium heat conduction theory with semi-infinity heat conduction. It showed that the temperature variation followed the exponential relation in both the heating/cooling procedures, and the whole heating/cooling process was divided into four regions I-IV, namely rapid heating region I and equilibrium heating region II in the heating process as well as quick cooling region III and equilibrium cooling region IV in the cooling process. The heating/cooling rates were then fitted from the temperature variation curve. The calculated heating/cooling rates were in the scale of 10(8)-10(11) K/s for the nano-scale pulse radiance. Furthermore, the effects of laser fluence and pulse duration on the temperature field were investigated. It was noted that the effect of pulse duration was focused on regions II and III, while the heating rate in region I was mainly determined by laser fluence. (C) 2013 Elsevier B.V. All rights reserved.

Keyword:

Phase-change material Temperature field Heating/cooling rate Finite element model

Author Community:

  • [ 1 ] [Liu, F. R.]Beijing Univ Technol, Inst Laser Engn, Beijing 100124, Peoples R China
  • [ 2 ] [Han, X. X.]Beijing Univ Technol, Inst Laser Engn, Beijing 100124, Peoples R China
  • [ 3 ] [Bai, N.]Beijing Univ Technol, Inst Laser Engn, Beijing 100124, Peoples R China
  • [ 4 ] [Zhao, J. J.]Beijing Univ Technol, Inst Laser Engn, Beijing 100124, Peoples R China
  • [ 5 ] [Chen, J. M.]Beijing Univ Technol, Inst Laser Engn, Beijing 100124, Peoples R China
  • [ 6 ] [Lin, X.]Northwestern Polytech Univ, State Key Lab Solidificat Proc, Xian 710072, Peoples R China

Reprint Author's Address:

  • 刘富荣

    [Liu, F. R.]Beijing Univ Technol, Inst Laser Engn, Beijing 100124, Peoples R China

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Source :

THIN SOLID FILMS

ISSN: 0040-6090

Year: 2014

Volume: 551

Page: 102-109

2 . 1 0 0

JCR@2022

ESI Discipline: MATERIALS SCIENCE;

ESI HC Threshold:341

JCR Journal Grade:2

CAS Journal Grade:3

Cited Count:

WoS CC Cited Count: 17

SCOPUS Cited Count: 17

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 1

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