单个氧化钴纳米线的结构-力学性能

Structure-mechanical property of individual cobalt oxide nanowires.

作者信息

Varghese Binni, Zhang Yousheng, Dai Ling, Tan Vincent B C, Lim Chwee Teck, Sow Chorng-Haur

机构信息

Department of Physics, Faculty of Science, National University of Singapore, 2 Science Drive 3, Singapore 117542.

出版信息

Nano Lett. 2008 Oct;8(10):3226-32. doi: 10.1021/nl801555d. Epub 2008 Aug 30.

DOI:10.1021/nl801555d

PMID:18759488

Abstract

We present a comprehensive approach to address the correlation between mechanical properties of nanowires (NWs) with their characteristic size, microstructure, and chemical composition. Using this technique, the Young's modulus of Co3O4 NWs with different sizes was evaluated. Thermal annealing in inert atmosphere was found to induce chemical reduction of as-grown Co3O4 NWs into CoO NWs without modifying their geometrical shape. Both Co3O4 and CoO NWs exhibited a size-dependent variation in Young's modulus.

摘要

我们提出了一种综合方法来研究纳米线（NWs）的力学性能与其特征尺寸、微观结构和化学成分之间的相关性。使用该技术，评估了不同尺寸的Co3O4纳米线的杨氏模量。发现在惰性气氛中进行热退火会使生长态的Co3O4纳米线化学还原为CoO纳米线，而不改变其几何形状。Co3O4和CoO纳米线的杨氏模量均表现出尺寸依赖性变化。