Abstract
Abstract Photostrictive materials, exhibiting light-induced strains, are of interest for future generation wireless remote control photoactuators, microactuators, and microsensor applications. The photostrictive effect arises from a superposition of the “bulk” photovoltaic effect. In other words, this arises from the generation of large voltage from the irradiation of light, and the converse piezoelectric effect, expansion or contraction under the voltage applied. (Pb,La)(Zr,Ti)O3 (PLZT) ceramics doped with WO3 exhibit large photostriction under uniform illumination of near-ultraviolet light. Using a bimorph configuration, a photo-driven relay and a micro walking device have been demonstrated. However, for the fabrication of these devices, higher response speed must be achieved. This chapter first reviews the theoretical background for the photostrictive effect, then it discusses enhanced performance through composition modification, and it also discusses sample preparation techniques (thickness and surface characteristics of the sample). Future applications of photostrictive actuators are briefly described.
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call