Atomistic origin of lattice strain on stiffness of nanoparticles

Physical Chemistry Chemical Physics : PCCP
Gang OuyangS Z Liao

Abstract

Lattice strain plays a crucial role on the properties of nanoparticles. Although the effect of lattice strain on nanoparticles has been widely studied in experimental measurements and calculations, its physical mechanism from the perfective of bond identities is still poorly understood. Herein we put forward an analytical solution of the size effect and external stimuli such as pressure and temperature dependence of lattice strain and bulk modulus of a nanoparticle from the perspective of atomistic origin. A shell-core configuration has been considered for the nanoparticle structure. It has been found that the lattice strain as well as quantum trapping and energy storage exerted by the compressive stress and thermal stress would be responsible for the mechanical behavior of nanoparticles. The theoretical predictions were well consistent with the experimental data and ab initio calculations, implying that the model could be expected to be a general approach to understand mechanical behavior in nanomaterials.

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Citations

Dec 14, 2011·ACS Applied Materials & Interfaces·G Ouyang, G W Yang
Jul 5, 2013·The Journal of Chemical Physics·Ai ZhangGuowei Yang
Sep 3, 2016·Chemical Reviews·Lihong JingMingyuan Gao
Sep 17, 2013·Scientific Reports·Y HeG W Yang
Dec 3, 2015·Physical Chemistry Chemical Physics : PCCP·S AliE C Neyts
Aug 2, 2016·Physical Chemistry Chemical Physics : PCCP·Panpan GaoYanjing Su
Oct 23, 2012·Nature Materials·Bart GorisGustaaf Van Tendeloo
Mar 15, 2015·Plant Methods·Achim WalterAndreas Hund
Oct 30, 2012·Chemical Society Reviews·Jianbo WuHong Yang
May 7, 2014·Physical Chemistry Chemical Physics : PCCP·Yan HeGang Ouyang
Nov 29, 2017·Journal of Analytical Methods in Chemistry·Jadranka MilikićBiljana Šljukić
Mar 12, 2013·Physical Chemistry Chemical Physics : PCCP·Ziming ZhuGuowei Yang
Jun 23, 2015·Nano Letters·Claudia ZloteaMichel Latroche

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