Piezoelectric effect of one-dimensional gear-shaped ZnO microwires

被引：11
作者：
Yin, Bing [1 ]
Qiu, Yu [1 ]
Zhang, Heqiu [1 ]
Lei, Jixue [1 ]
Ji, Jiuyu [1 ]
Li, Lipeng [1 ]
Hu, Lizhong [1 ]
机构：
[1] Dalian Univ Technol, Sch Phys & Optoelect Technol, Dalian 116024, Liaoning Provin, Peoples R China
来源：
APPLIED SURFACE SCIENCE | 2014年 / 311卷
关键词：
ZnO; Gear-shaped; Anisotropic; The finite element; NANOWIRE; NANOGENERATOR; FABRICATION; NANOBELTS; SURFACE; ARRAYS; ENERGY;
D O I：
10.1016/j.apsusc.2014.05.124
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
In this work the piezoelectric effect of one-dimensional ZnO gear-shaped microwires (GMWs) is studied by the finite element method. By calculating the piezopotential of substrate-bound gear-shaped ZnO microwires oriented along the c-axis with gear groove depth of 0-5 mu m, we demonstrate that the GMW has more advantage for piezoelectric nanogenerators than the common hexagonal microwire (HMW). To understand the anisotropic electricity generation, the calculated piezopotential distribution in the bent ZnO GMW and HMW has been analyzed under an external force with the different directions. Moreover, the calculation also indicates that the effect of geometric size on piezopotential for the GMW is similar to the HMW. Our results will be a guidance for the design of high-efficiency energy harvesting devices. (C) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码：621 / 625
页数：5
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