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Title: An analytical description for the elastic compression of metallic polyhedral nanoparticles

Abstract

Metallic nanoparticles are usually polyhedrons instead of perfect spheres, which presents a challenge to characterize their elastic response. In the present paper, the elastic compression of truncated octahedral nanoparticles is investigated through finite element calculations and atomic simulations. An analytical expression of load is obtained for octahedral particles, which is linearly proportional to indent depth, instead of the 3/2 power law relation predicted by Hertzian model for elastic sphere. Comparisons with molecular dynamics simulations demonstrate that the obtained relation can predict the elastic response of polyhedral nanoparticles. This study is helpful to measure the elastic properties of polyhedral nanoparticles, and characterize their elastic response.

Authors:
; ; ; ;  [1]
  1. Department of Engineering Mechanics, SVL, Xi’an Jiaotong University, Xi’an 710049 (China)
Publication Date:
OSTI Identifier:
22611385
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Advances; Journal Volume: 6; Journal Issue: 8; Other Information: (c) 2016 Author(s); Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
77 NANOSCIENCE AND NANOTECHNOLOGY; COMPARATIVE EVALUATIONS; COMPRESSION; ELASTICITY; FINITE ELEMENT METHOD; MOLECULAR DYNAMICS METHOD; NANOPARTICLES; SIMULATION; SPHERES

Citation Formats

Yang, L., Feng, J., Ding, Y., Bian, J. J., and Wang, G. F., E-mail: wanggf@mail.xjtu.edu.cn. An analytical description for the elastic compression of metallic polyhedral nanoparticles. United States: N. p., 2016. Web. doi:10.1063/1.4961638.
Yang, L., Feng, J., Ding, Y., Bian, J. J., & Wang, G. F., E-mail: wanggf@mail.xjtu.edu.cn. An analytical description for the elastic compression of metallic polyhedral nanoparticles. United States. doi:10.1063/1.4961638.
Yang, L., Feng, J., Ding, Y., Bian, J. J., and Wang, G. F., E-mail: wanggf@mail.xjtu.edu.cn. 2016. "An analytical description for the elastic compression of metallic polyhedral nanoparticles". United States. doi:10.1063/1.4961638.
@article{osti_22611385,
title = {An analytical description for the elastic compression of metallic polyhedral nanoparticles},
author = {Yang, L. and Feng, J. and Ding, Y. and Bian, J. J. and Wang, G. F., E-mail: wanggf@mail.xjtu.edu.cn},
abstractNote = {Metallic nanoparticles are usually polyhedrons instead of perfect spheres, which presents a challenge to characterize their elastic response. In the present paper, the elastic compression of truncated octahedral nanoparticles is investigated through finite element calculations and atomic simulations. An analytical expression of load is obtained for octahedral particles, which is linearly proportional to indent depth, instead of the 3/2 power law relation predicted by Hertzian model for elastic sphere. Comparisons with molecular dynamics simulations demonstrate that the obtained relation can predict the elastic response of polyhedral nanoparticles. This study is helpful to measure the elastic properties of polyhedral nanoparticles, and characterize their elastic response.},
doi = {10.1063/1.4961638},
journal = {AIP Advances},
number = 8,
volume = 6,
place = {United States},
year = 2016,
month = 8
}
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