压电
铌酸锂
材料科学
铁电性
振动
抗弯强度
压电系数
电场
声学
弯曲
结构工程
复合材料
机械
物理
工程类
光电子学
电介质
量子力学
作者
Dejin Huang,Jiashi Yang
标识
DOI:10.1080/15376494.2018.1500664
摘要
Two-dimensional equations for flexural motions of a lithium niobate piezoelectric plate are derived from three-dimensional equations. The plate has a ferroelectric inversion layer where the piezoelectric constants reverse signs. The equations show an unconventional behavior that a uniform electric field along the plate thickness can produce bending. This offers many possibilities for new designs of devices. Waves in unbounded plates are examined for the accuracy of the equations. A piezoelectric energy harvester based on such a plate is analyzed as an example of the application of the equations derived in vibrations of finite plates.
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