The piezoelectric phenomenon depicts a coupling between mechanical displacement and electric polarization. It has been applied in many different areas, such as sensors, energy transducers, and actuators since its discovery century ago. Currently, novel applications of piezoelectric materials placed new requirements on the materials properties, such as nano-structuring, three-dimensional configuration, flexibility, biocompatibility, and multi-property coupling.
Our research in this category focuses on the development of novel piezoelectric and composites with new dimensionality, geometry, and the study of multiple coupling properties. Our specific research directions are:
Synthesizing 2D piezoelectric materials, such as ZnO and characterizing its size-related piezoelectric polarization at the nanometer scale, particularly due to the flexoelectric enhancement.
Developing flexible piezoelectric and ferroelectric materials and composites with tunable mechanical modulus that matches that of body tissues.
Designing and fabricating 3D piezoelectric and ferroelectric geometry by additive manufacturing.
Developing biocompatible or biodegradable piezoelectric materials from biomaterials.
Studying the coupling effects between piezoelectric polarization and electrochemical processes (piezotronics).
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