摘要
We study electric currents in a piezoelectric semiconductor fiber under a constant voltage and time-dependent axial stresses applied locally.From a nonlinear numerical analysis based on a one-dimensional phenomenological model using the commercial software COMSOL,it is found that pulse electric currents can be produced by periodic or time-harmonic stresses.The pulse currents can be tuned by the amplitude and frequency of the applied stress.The result obtained provides a new approach for the mechanical control of electric currents in piezoelectric semiconductor fibers and has potential applications in piezotronics.
基金
This work was supported by the State Key Laboratory of Mechanics and Control of Mechanical Structures at NUAA[Grant number MCMS-E-0520K02]
the Key Laboratory of Impact and Safety Engineering,Ministry of Education at Ningbo University[Grant number CJ201904]
the Fundamental Research Funds for the Central Universities[Grant numbers NE2020002,NS2019007]
a project funded by the Priority Academic Program Development of Jiangsu Higher Education Institutions(PAPD).
