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Influence of pre-exsiting surface defects on the vibrational properties of Ag nanowires

Zhan, Haifei, Gu, YuanTong, Yarlagadda, Prasad K., & Yan, Cheng (2012) Influence of pre-exsiting surface defects on the vibrational properties of Ag nanowires. In 12th International Conference on Nanotechnology (IEEE NANO 2012), 20-23 August 2012, International Convention Centre, Birmingham.

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Abstract

Large-scale molecular dynamics simulations are performed to characterize the effects of pre-existing surface defects on the vibrational properties of Ag nanowires. It is found that the first order natural frequency of the nanowire appears insensitive to different surface defects, indicating a defect insensitivity property of the nanowire’s Young’s modulus. In the meanwhile, an increase of the quality (Q)-factor is observed due to the presence of defects. Particular, a beat phenomenon is observed for the nanowire with the presence of a surface edge defect, which is driven by a single actuation. It is concluded that different surface defects could act as an effective mean to tune the vibrational properties of nanowires. This study sheds lights on the better understanding of nanowire’s mechanical performance when surface defects are presented, which would benefit the development of nanowire-based devices.

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ID Code: 54173
Item Type: Conference Paper
Keywords: Surface defect, vibration, beat, nanowire, molecular dynamics
ISSN: 1944-9399
Subjects: Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > MATERIALS ENGINEERING (091200)
Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > MECHANICAL ENGINEERING (091300)
Australian and New Zealand Standard Research Classification > TECHNOLOGY (100000) > NANOTECHNOLOGY (100700)
Divisions: Current > Schools > School of Chemistry, Physics & Mechanical Engineering
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Copyright Owner: Copyright 2012 IEEE
Deposited On: 16 Oct 2012 09:28
Last Modified: 21 Oct 2012 04:33

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