Research on shunted piezoelectric transducers, performed mainly over the past decade, has generated new opportunities for control of vibration and damping in flexible structures. This is made possible by the strong electromechanical coupling associated with modern piezoelectric transducers. In vibration control applications, a piezoelectric transducer is bonded to, or embedded in a base structu...

abstract: the main aim of the vibration energy harvesters is to locally power autonomous devices such as wireless sensors. generally, power levels are low and the environmental benefit of the technology is to replace batteries rather than saving energy per se. piezoelectric vibrational energy harvesters are usually inertial mass based devices, where a cantilever beam with a piezoelectric outer ...

The piezoelectric effect of biological piezoelectric materials promotes bone growth. However, the material should be subjected to stress before it can produce an electric charge that promotes bone repair and reconstruction conducive to fracture healing. A novel method for in vitro experimentation of biological piezoelectric materials with physiological load is presented. A dynamic loading devic...

Systematic studies on polycrystalline Hf1–xZrxO2 films with varying Zr contents show that HfO2 are paraelectric (monoclinic). If the content is increased, become ferroelectric (orthorhombic) and then antiferroelectric (tetragonal). shows very good insulating properties it used in metal-oxide-semiconductor field-effect devices, while ZrO2 piezoelectric properties, but antiferroelectric. In betwe...

The purpose of this review is to detail the current theoretical understanding of the origin of piezoelectric and ferroelectric phenomena in polymers; to present the state-of-the-art in piezoelectric polymers and emerging material systems that exhibit promising properties; and to discuss key characterization methods, fundamental modeling approaches, and applications of piezoelectric polymers. Pi...

Relaxor-PbTiO3 piezoelectric single crystals have been widely used in a broad range of electromechanical devices, including piezoelectric sensors, actuators, and transducers. This paper reviews the unique properties of these single crystals for piezoelectric sensors. Design, fabrication and characterization of various relaxor-PT single crystal piezoelectric sensors and their applications are pr...

Abstract Based on the mechanical motion equation, Gauss’s law, and current continuity condition, we study a few typical transient effects in piezoelectric semiconductor (PS) fiber to realize startup turning-off functions of common piezotronic devices. In this study, extensional vibration induced by suddenly applied axial time-dependent force is examined cantilevered n-type ZnO nanofiber. Neithe...