Mass nature of heat and its applications IV: Thermal wave and periodic temperature oscillation in metallic films heated by ultra-short pulsed lasers

Haidong Wang, Weigang Ma, Xing Zhang, Wei Wang

研究成果: 著書/レポートタイプへの貢献会議での発言

抄録

The ultra-fast heat transfer in metallic films has attracted great interest in modern femtosecond laser processing and metallic film manufacturing. Considering the unphysical infinite propagation speed of heat disturbances based on Fourier's model, some hyperbolic heat transfer models have been developed in the past decades, leading to the character of thermal wave in metallic films under ultra-fast laser heating conditions. In this paper the thermomass model is applied to obtain the governing equation for heat conduction in the thin films under pulsed laser heating, which is a damped wave equation and identical with that based on the Hyperbolic Two-Step (HTS) model. The semi-implicit Crank-Nicholson scheme is used to solve governing equations. Numerical results show that there may be two kinds of temperature oscillations existed in metallic films heated by ultra-short pulsed lasers, and the thermally oscillating boundary condition usually dominates over that caused by thermal wave induced oscillation of the electron temperature, which is validated by the measurement of the temperature response at the rear surface using a femtosecond laser pump-probe system. The measured electron temperature curve agrees well with the theoretically predicted one.

元の言語英語
ホスト出版物のタイトル2010 14th International Heat Transfer Conference, IHTC 14
ページ321-326
ページ数6
DOI
出版物ステータス出版済み - 12 1 2010
イベント2010 14th International Heat Transfer Conference, IHTC 14 - Washington, DC, 米国
継続期間: 8 8 20108 13 2010

出版物シリーズ

名前2010 14th International Heat Transfer Conference, IHTC 14
3

その他

その他2010 14th International Heat Transfer Conference, IHTC 14
米国
Washington, DC
期間8/8/108/13/10

Fingerprint

Metallic films
Pulsed lasers
Laser heating
Electron temperature
Ultrashort pulses
Heat transfer
Ultrafast lasers
Temperature
Wave equations
Heat conduction
Boundary conditions
Pumps
Thin films
Hot Temperature
Processing

All Science Journal Classification (ASJC) codes

  • Fluid Flow and Transfer Processes

これを引用

Wang, H., Ma, W., Zhang, X., & Wang, W. (2010). Mass nature of heat and its applications IV: Thermal wave and periodic temperature oscillation in metallic films heated by ultra-short pulsed lasers. : 2010 14th International Heat Transfer Conference, IHTC 14 (pp. 321-326). (2010 14th International Heat Transfer Conference, IHTC 14; 巻数 3). https://doi.org/10.1115/IHTC14-22368

Mass nature of heat and its applications IV : Thermal wave and periodic temperature oscillation in metallic films heated by ultra-short pulsed lasers. / Wang, Haidong; Ma, Weigang; Zhang, Xing; Wang, Wei.

2010 14th International Heat Transfer Conference, IHTC 14. 2010. p. 321-326 (2010 14th International Heat Transfer Conference, IHTC 14; 巻 3).

研究成果: 著書/レポートタイプへの貢献会議での発言

Wang, H, Ma, W, Zhang, X & Wang, W 2010, Mass nature of heat and its applications IV: Thermal wave and periodic temperature oscillation in metallic films heated by ultra-short pulsed lasers. : 2010 14th International Heat Transfer Conference, IHTC 14. 2010 14th International Heat Transfer Conference, IHTC 14, 巻. 3, pp. 321-326, 2010 14th International Heat Transfer Conference, IHTC 14, Washington, DC, 米国, 8/8/10. https://doi.org/10.1115/IHTC14-22368
Wang H, Ma W, Zhang X, Wang W. Mass nature of heat and its applications IV: Thermal wave and periodic temperature oscillation in metallic films heated by ultra-short pulsed lasers. : 2010 14th International Heat Transfer Conference, IHTC 14. 2010. p. 321-326. (2010 14th International Heat Transfer Conference, IHTC 14). https://doi.org/10.1115/IHTC14-22368
Wang, Haidong ; Ma, Weigang ; Zhang, Xing ; Wang, Wei. / Mass nature of heat and its applications IV : Thermal wave and periodic temperature oscillation in metallic films heated by ultra-short pulsed lasers. 2010 14th International Heat Transfer Conference, IHTC 14. 2010. pp. 321-326 (2010 14th International Heat Transfer Conference, IHTC 14).
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