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Sensors 2013, 13(2), 2419-2429; doi:10.3390/s130202419

Light-Intensity-Induced Characterization of Elastic Constants and d33 Piezoelectric Coefficient of PLZT Single Fiber Based Transducers

Department of Materials Science, University of Silesia, 41-200 Sosnowiec, ul. Snieżna 2, Poland
Technical University of Liberec, Studentská St. 2, CZ-461 17 Liberec 1, Czech Republic
Laboratory for High Performance Ceramics, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Überlandstrasse 129, 8600 Duebendorf, Switzerland
Author to whom correspondence should be addressed.
Received: 20 December 2012 / Revised: 28 January 2013 / Accepted: 2 February 2013 / Published: 12 February 2013
(This article belongs to the Special Issue Piezoelectric Sensors and Actuators)
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Enhanced functionality of electro-optic devices by implementing piezoelectric micro fibers into their construction is proposed. Lanthanum-modified lead zirconate titanate (PLZT) ceramics are known to exhibit high light transparency, desirable electro-optic properties and fast response. In this study PLZT fibers with a diameter of around 300 microns were produced by a thermoplastic processing method and their light-induced impedance and piezoelectric coefficient were investigated at relatively low light intensity (below 50 mW/cm2). The authors experimentally proved higher performance of light controlled microfiber transducers in comparison to their bulk form. The advantage of the high surface area to volume ratio is shown to be an excellent technique to design high quality light sensors by using fibrous materials. The UV absorption induced change in elastic constants of 3% and 4% for the piezoelectric coefficient d33.
Keywords: piezoelectric fibers; electro-optical ceramics; extrusion method piezoelectric fibers; electro-optical ceramics; extrusion method
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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Kozielski, L.; Erhart, J.; Clemens, F.J. Light-Intensity-Induced Characterization of Elastic Constants and d33 Piezoelectric Coefficient of PLZT Single Fiber Based Transducers. Sensors 2013, 13, 2419-2429.

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