English  |  正體中文  |  简体中文  |  Items with full text/Total items : 26653/27249 (98%)
Visitors : 12253401      Online Users : 382
RC Version 7.0 © Powered By DSPACE, MIT. Enhanced by NTU Library IR team.
Scope Tips:
  • please add "double quotation mark" for query phrases to get precise results
  • please goto advance search for comprehansive author search
  • Adv. Search
    HomeLoginUploadHelpAboutAdminister Goto mobile version

    Please use this identifier to cite or link to this item: http://ir.lib.ksu.edu.tw/handle/987654321/7956

    Title: Temperature Distribution of Femtosecond Laser Processing for a Metal Film
    Authors: Ching-Yen Ho
    Chung Ma
    Keywords: Temperature distribution
    Date: 2008-11-08
    Issue Date: 2010-01-13 16:52:56 (UTC+8)
    Abstract: The temperature distributions in a metal film heated by femtosecond laser are investigated in this paper. The time scale in which energy transfers from the electrons to lattice is on the order of a picosecond for metals. Therefore when the duration of femtosecond laser heating of metal films is on the order of or shorter than a picosecond, a substantial nonequilibrium can occur between the electron and lattice temperature and the metal lattices stay almost thermally undisturbed in this highly nonequilibrium regime. Assuming the system to be one-dimensional and insulated at the front and rear surfaces, a parabolic two-temperature model is employed to investigate temperature distributions in metal films irradiated by a femtosecond laser. The results reveal that electron temperature distribution along x decreases with the increasing absorption depth, coupling factor, and electron specific heat. The high thermal conductivity leads to the decrease of electron temperature with time near the front surface of the film but increase of electron temperature with time near the rear surface of the film.
    Appears in Collections:[機械工程系所] SME 2008第六屆全國精密製造研討會-國際製造工程學會中華民國分會

    Files in This Item:

    File Description SizeFormat
    A02-08本文.pdf256KbAdobe PDF30View/Open

    All items in KSUIR are protected by copyright, with all rights reserved.

    ©Kun Shan University Library and Information Center
    DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library IR team Copyright ©   - Feedback