An analytical description for the elastic compression of metallic polyhedral nanoparticles | Zendy

Liu Yang | Zendy; Juan Feng | Zendy; Yue Ding | Zendy; Jianjun Bian | Zendy; Gang-Feng Wang | Zendy

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An analytical description for the elastic compression of metallic polyhedral nanoparticles

Author(s) -

Liu Yang,

Juan Feng,

Yue Ding,

Jianjun Bian,

Gang-Feng Wang

Publication year - 2016

Publication title -

aip advances

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.421

H-Index - 58

ISSN - 2158-3226

DOI - 10.1063/1.4961638

Subject(s) - polyhedron , nanoparticle , materials science , compression (physics) , spheres , elastic modulus , octahedron , finite element method , elasticity (physics) , linear elasticity , mechanics , composite material , nanotechnology , physics , geometry , crystallography , thermodynamics , chemistry , mathematics , crystal structure , astronomy

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

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