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Effect of ballistic electrons on ultrafast thermomechanical responses of a thin metal film |
Qi-lin Xiong(熊启林)1,2, Xin Tian(田昕)3 |
1 Department of Mechanics, Huazhong University of Science & Technology, Wuhan 430074, China; 2 Hubei Key Laboratory of Engineering Structural Analysis and Safety Assessment, Wuhan 430074, China; 3 School of Mechanical Engineering, Xi'an Jiaotong University, Xi'an 710049, China |
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Abstract The ultrafast thermomechanical coupling problem in a thin gold film irradiated by ultrashort laser pulses with different electron ballistic depths is investigated via the ultrafast thermoelasticity model. The solution of the problem is obtained by solving finite element governing equations. The comparison between the results of ultrafast thermomechanical coupling responses with different electron ballistic depths is made to show the ballistic electron effect. It is found that the ballistic electrons have a significant influence on the ultrafast thermomechanical coupling behaviors of the gold thin film and the best laser micromachining results can be achieved by choosing the specific laser technology (large or small ballistic range). In addition, the influence of simplification of the ultrashort laser pulse source on the results is studied, and it is found that the simplification has a great influence on the thermomechanical responses, which implies that care should be taken when the simplified form of the laser source term is applied as the Gaussian heat source.
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Received: 01 November 2016
Revised: 20 April 2017
Accepted manuscript online:
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PACS:
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65.40.De
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(Thermal expansion; thermomechanical effects)
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62.25.-g
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(Mechanical properties of nanoscale systems)
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Fund: Project supported by the National Natural Science Foundation of China (Grant No. 11502085), the Natural Science Foundation of Hubei Province, China (Grant No. 2016CFB542), the Fundamental Research Funds for the Central Universities, China (Grant No. 2016YXMS097), and the Research Fund of State Key Laboratory of Mechanics and Control of Mechanical Structures (NUAA), China (Grant No. 0315K01). |
Corresponding Authors:
Qi-lin Xiong
E-mail: xiongql@hust.edu.cn
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Cite this article:
Qi-lin Xiong(熊启林), Xin Tian(田昕) Effect of ballistic electrons on ultrafast thermomechanical responses of a thin metal film 2017 Chin. Phys. B 26 096501
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[1] |
Liu X, Du D and Mourou G 1997 IEEE. J. Quantum. Elect. 33 1706
|
[2] |
Shirk M D and Molian P A 1998 J. Laser. Appl. 10 18
|
[3] |
Fujimoto J G, Liu J M and Ippen E P 1984 Phys. Rev. Lett. 53 1837
|
[4] |
Hohlfeld J, Wellershoff S S, Gudde J, Conrad U, Jahnke V and Matthias E 2000 Chem. Phys. 251 237
|
[5] |
Sua' rez C, Bron W E and Juhasz T 1995 Phys. Rev. Lett. 75 4536
|
[6] |
Liu X, Stock R and Rudolph W 2005 Phys. Rev. B 72 195431
|
[7] |
Byskov-Nielsen J, Juha-Matti S, Christensen M S and Balling P 2011 Appl. Phys. A 103 447
|
[8] |
Thomas D A, Lin Z, Zhigilei L V, Gurevich E L, Kittel S and Hergenröder R 2009 Appl. Surf. Sci. 255 9605
|
[9] |
Wellershoff S S, Hohlfeld J, Güdde J and Matthias E 1999 Appl. Phys. A 69 99
|
[10] |
Chen J K and Beraun J E 2001 Numer. Heat. Tr. A-Appl. 40 1
|
[11] |
Thomsen C, Grahn, H T, Maris H J and Tauc J 1986 Phys. Rev. B 34 4129
|
[12] |
Oulton R F, Sorger V J, Zentgraf T, Ma R M, Gladden C, Dai L, Bartal G and Zhang X 2009 Nature 461 629
|
[13] |
Chen J K, Beraun J E, Grimes L E and Tzou D Y 2002 Int. J. Solids. Struct. 39 3199
|
[14] |
Falkovsky L A and Mishchenko E G 1999 Sov. Phys. JEPT 88 84
|
[15] |
Xiong Q L and Tian X G 2013 J. Therm. Stresses. 36 387
|
[16] |
Xiong Q L and Tian X G 2015 Mech. Adv. Mater. Struc. 22 548
|
[17] |
Gan Y, Qi W J, Shen Y G and Chen Z 2013 Opt. Lett. 38 2397
|
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