Kuznetsova I E, Nedospasov I A, Kolesov V V, Qian Z, Wang B, Zhu F
Kotelnikov Institute of Radio Engineering and Electronics of RAS, Moscow 125009, Russia.
Kotelnikov Institute of Radio Engineering and Electronics of RAS, Moscow 125009, Russia.
Ultrasonics. 2018 May;86:6-13. doi: 10.1016/j.ultras.2018.01.010. Epub 2018 Feb 2.
The profiles of an acoustic field and electric potential of the forward and backward shear-horizontal (SH) acoustic waves of a higher order propagating in X-Y potassium niobate plate have been theoretically investigated. It has been shown that by changing electrical boundary conditions on a surface of piezoelectric plates, it is possible to change the distributions of an acoustic field and electric potential of the forward and backward acoustic waves. The dependencies of the distribution of a mechanical displacement and electrical potential over the plate thickness for electrically open and electrically shorted plates have been plotted. The influence of a layer with arbitrary conductivity placed on a one or on the both plate surfaces on the profiles under study, phase and group velocities of the forward and backward acoustic waves in X-Y potassium niobate has been also investigated. The obtained results can be useful for development of the method for control of a particle or electrical charge movement inside the piezoelectric plates, as well a sensor for definition of the thin film conductivity.
对在X - Y铌酸钾板中传播的高阶前向和后向水平切变（SH）声波的声场和电势分布进行了理论研究。结果表明，通过改变压电板表面的电边界条件，可以改变前向和后向声波的声场和电势分布。绘制了电开路和电短路板上机械位移和电势在板厚度上的分布关系。还研究了在一个或两个板表面上放置具有任意电导率的层对所研究的分布、X - Y铌酸钾中前向和后向声波的相速度和群速度的影响。所得结果对于开发控制压电板内粒子或电荷运动的方法以及用于定义薄膜电导率的传感器可能是有用的。
