In situ probing mechanical properties of individual tungsten oxide nanowires directly grown on tungsten tips inside transmission electron microscope

被引：54

作者：

Liu, K. H. ^{[1
]}

Wang, W. L. ^{[1
]}

Xu, Z. ^{[1
]}

Liao, L. ^{[1
]}

Bai, X. D. ^{[1
]}

Wang, E. G. ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100080, Peoples R China

来源：

APPLIED PHYSICS LETTERS | 2006年 / 89卷 / 22期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1063/1.2397547

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The mechanical properties of individual tungsten oxide (WO3) nanowires, directly grown onto tungsten scanning tunneling microscopy tips, have been investigated by a custom-built in situ transmission electron microscopy (TEM) measurement system. Young's modulii (E) of the individual WO3 nanowires were measured with the assistance of electric-induced mechanical resonance. The results indicate that E basically keeps constant at diameter larger than 30 nm, while it largely increases with decreasing diameter when diameter becomes smaller than 30 nm. This diameter dependence is attributed to the lower defect density in nanowires with smaller diameter, as imaged by in situ TEM.

引用

页数：3

共 23 条

[1] Measuring the work function at a nanobelt tip and at a nanoparticle surface [J].