We study the interaction between mechanical fields and the motion of charge carriers in a composite beam of flexoelectric (nonpiezoelectric) and semiconductor layers. The macroscopic theory of flexoelectricity and the drift-diffusion theory of semiconduction are used. They are coupled by doping and mobile charges in Gauss's equation of electrostatics. A one-dimensional electromechanical model is established for the bending of the beam. Solutions from the model show that bending of the beam induces redistribution of charge carriers through the electric field produced by flexoelectric coupling. This provides a new means for constructing electromechanical semiconductor devices and extends piezotronic devices.

中文翻译：

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机械场对柔性电介质和半导体复合梁中移动电荷的影响

我们研究了柔性电（非压电）和半导体层的复合梁中机械场与电荷载流子运动之间的相互作用。使用了柔性电的宏观理论和半导体的漂移扩散理论。它们通过高斯静电方程中的掺杂和移动电荷耦合。建立了梁弯曲的一维机电模型。该模型的解决方案表明，梁的弯曲会通过挠曲电耦合产生的电场引起电荷载流子的重新分布。这为构建机电半导体器件和扩展压电电子器件提供了一种新方法。