Temperature Effect on Tensile Behavior of Helical Multi-Shell Gold Nanowires

Abstract:

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This study performs molecular dynamics (MD) simulations to investigate the tensile behavior of Helical Multi-Shell (HMS) gold nanowires. As their name suggests, these nanowires have a multi-shell helical structure rather than a conventional bulk FCC structure. The mechanical properties and deformation behaviors of the 7-1, 11-4 and 14-7-1 HMS structures are examined under tensile testing at temperatures between 4K and 300 K and a constant strain rate of 0.003% −1 ps . The results reveal that temperature influences the yielding stress, the Young’s modulus, and the deformation behaviors of HMS nanowires. The yielding stress of the 7-1 structure is found to be higher than that of the 11-4 or 14-7-1 structures. Finally, under different temperature conditions, many different close-packed structures are identified in the nanowires before they fracture.

Info:

Periodical:

Materials Science Forum (Volumes 505-507)

Edited by:

Wunyuh Jywe, Chieh-Li Chen, Kuang-Chao Fan, R.F. Fung, S.G. Hanson,Wen-Hsiang Hsieh, Chaug-Liang Hsu, You-Min Huang, Yunn-Lin Hwang, Gerd Jäger, Y.R. Jeng, Wenlung Li, Yunn-Shiuan Liao, Chien-Chang Lin, Zong-Ching Lin, Cheng-Kuo Sung and Ching-Huan Tzeng

Pages:

385-390

DOI:

10.4028/www.scientific.net/MSF.505-507.385

Citation:

J. S. Lin et al., "Temperature Effect on Tensile Behavior of Helical Multi-Shell Gold Nanowires", Materials Science Forum, Vols. 505-507, pp. 385-390, 2006

Online since:

January 2006

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Price:

$35.00

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