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New applications of photostrictive ferroics

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Material Research Innovations

Abstract

 Photostriction in ferroelectrics arises from a superposition of photovoltaic and inverse piezoelectric effects. (Pb,La)(Zr,Ti)O3 ceramics doped with WO3 exhibit large photostriction under irradiation of near-ultraviolet light, and are applicable to remote control actuators and photoacoustic devices. Using a bimorph configuration, a photo-driven relay and a micro walking device have been developed, which are designed to start moving as a result from the irradiation, having neither electric lead wires nor electric circuits. The mechanical resonance of the bimorph was also induced by an intermittent illumination of purple-color light; this verified the feasibility of applying photostriction for ”photophone” applications.

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Authors and Affiliations

  1. International Center for Actuators and Transducers, Materials Research Laboratory, The Pennsylvania State University, University Park, PA 16802, USA Fax: (814)865–2326, e-mail: kxu1@alpha.mrl.psu.edu, US

    Kenji Uchino

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  1. Kenji Uchino
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Received: 10 September 1997/Accepted: 9 October 1997

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Uchino, K. New applications of photostrictive ferroics. Mat Res Innovat 1, 163–168 (1997). https://doi.org/10.1007/s100190050036

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  • DOI: https://doi.org/10.1007/s100190050036

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