Abstract

We study the torsion of a composite rod of a nonpiezoelectric semiconductor core coated within a piezoelectric dielectric shell. A one-dimensional model is established using the macroscopic theory of piezoelectric semiconductors. An analytical solution is obtained, showing explicitly that the mobile charges in the rod redistribute themselves axially under torsion. Hence, the composite rod exhibits axial piezotronic coupling. This suggests the possibility of new piezotronic devices operating with torsion, in addition to the existing devices based on extension and bending of beams.

中文翻译：

---

压电介质和非压电半导体复合棒中扭转变形与移动电荷的相互作用

摘要

我们研究了涂在压电介电壳内的非压电半导体芯复合棒的扭转。利用压电半导体的宏观理论建立一维模型。获得了解析解，明确显示杆中的移动电荷在扭转下轴向重新分布。因此，复合棒表现出轴向压电耦合。这表明除了现有的基于梁的延伸和弯曲的设备之外，新的压电设备可能会通过扭转运行。