A mathematical model for predicting photo-induced voltage and photostriction of PLZT with coupled multi-physics fields and its application. (22nd December 2015)

• Record Type: Journal Article
• Authors: Huang, J H; Wang, X J; Wang, J
• Is Part Of: Smart materials and structures. Volume 25:Number 2(2016:Feb.)
• Publication Date: 2015-12-22
• Subjects: PLZT -- multi-physics fields -- mathematical modeling; Smart materials -- Periodicals; Strucural design -- Periodicals; 620.11
• DOI: 10.1088/0964-1726/25/2/025002
• Languages: English
• ISSNs: 0964-1726

Abstract

Abstract: The primary purpose of this paper is to propose a mathematical model of PLZT ceramic with coupled multi-physics fields, e.g. thermal, electric, mechanical and light field. To this end, the coupling relationships of multi-physics fields and the mechanism of some effects resulting in the photostrictive effect are analyzed theoretically, based on which a mathematical model considering coupled multi-physics fields is established. According to the analysis and experimental results, the mathematical model can explain the hysteresis phenomenon and the variation trend of the photo-induced voltage very well and is in agreement with the experimental curves. In addition, the PLZT bimorph is applied as an energy transducer for a photovoltaic–electrostatic hybrid actuated micromirror, and the relation of the rotation angle and the photo-induced voltage is discussed based on the novel photostrictive mathematical model.