材料科学
压电
抗弯强度
板块理论
非线性系统
电子
薄膜
复合材料
半导体
运动方程
复合板
机械
复合数
经典力学
物理
声学
光电子学
纳米技术
振动
量子力学
作者
Yixun Luo,Chunli Zhang,Weiqiu Chen,Jiashi Yang
出处
期刊:Journal of Applied Mechanics
[ASME International]
日期:2019-02-07
卷期号:86 (5)
被引量:34
摘要
We theoretically study the electromechanical behaviors of a laminated thin-film piezoelectric semiconductor (PS) composite plate with flexural deformation. The nonlinear equations for drift currents of electrons and holes are linearized for a small carrier concentration perturbation. Following the structural theory systemized by R. D. Mindlin, a system of two-dimensional (2D) equations for the laminated thin-film PS plate, including the lowest order coupled extensional and flexural motion, are presented by expanding the displacement, potential, and the incremental concentration of electrons and holes as power series of the plate thickness. Based on the derived 2D equations, the analytical expressions of the electromechanical fields and distribution of electrons in the thin-film PS plate with an n-type ZnO layer subjected to a static bending are presented. The numerical results show that the electromechanical behaviors and piezotronic effects can be effectively controlled by the external applied force and initial concentration of carriers. The derived 2D equations and numerical results in this paper are helpful for developing piezotronic devices.
科研通智能强力驱动
Strongly Powered by AbleSci AI