Surface effects on the elastic modulus of Te nanowires

被引：40

作者：

Stan, G. ^{[1
]}

Krylyuk, S. ^{[2
]}

Davydov, A. V. ^{[2
]}

Vaudin, M. ^{[1
]}

Bendersky, L. A. ^{[2
]}

Cook, R. F. ^{[1
]}

机构：

[1] NIST, Div Ceram, Gaithersburg, MD 20899 USA

[2] NIST, Div Met, Gaithersburg, MD 20899 USA

来源：

APPLIED PHYSICS LETTERS | 2008年 / 92卷 / 24期

关键词：

D O I：

10.1063/1.2945285

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Nondestructive elastic property measurements have been performed on Te nanowires with diameters in the range 20-150 nm. By using contact resonance atomic force microscopy, the elastic indentation modulus perpendicular to the prismatic facets of the nanowires has been accurately quantified. In this diameter range, a pronounced size dependence of the modulus has been observed: an invariant value consistent with Te bulk properties for large wire diameters, followed by a nonlinear increase with decreasing diameter, and finally an almost doubling of the modulus for Te nanowires thinner than 30 nm. A model based on surface stiffening describes the observations. (C) 2008 American Institute of Physics.

引用

页数：3

共 25 条

[1]

[Anonymous], CONTACT MECH

[2] Size dependence of Young's modulus in ZnO nanowires [J].