Energy analysis of size-dependent elastic properties of ZnO nanofilms using atomistic simulations

被引：42

作者：

Cao, Guoxin ^{[1
]}

Chen, Xi ^{[1
]}

机构：

[1] Columbia Univ, Dept Civil Engn & Engn Mech, Columbia Nanomech Res Ctr, New York, NY 10027 USA

来源：

PHYSICAL REVIEW B | 2007年 / 76卷 / 16期

关键词：

D O I：

10.1103/PhysRevB.76.165407

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The size dependence of elastic modulus of ZnO nanofilms is investigated by using atomistic simulations. The strain energy and elastic stiffness of the surface and interior atomic layers, as well as interlayer interactions, are decoupled. The surface stiffness is found to be much lower than that of the interior layers and bulk counterpart, and with the decrease of film thickness, the residual tension-stiffened interior atomic layers are the main contributions of the increased elastic modulus of nanofilms.

引用

页数：5

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