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A shear-bending mode high temperature piezoelectric actuator

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5 Author(s)
Jianguo Chen ; Department of Materials Science and Engineering, College of Engineering, Peking University, Yiheyuan Road No.5, Beijing 100871, People’s Republic of China ; Li, Xiaotian ; Liu, Guoxi ; Zhijiang Chen
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A single ring-shape ceramic plate piezoelectric actuator operated in shear-bending mode was proposed for high-temperature operation. The actuator was formed from BiScO3-PbTiO3 ceramic and polarized in the radial direction. A large bending displacement at the center of the actuator was piezoelectrically generated under an applied voltage in the thickness direction due to axial-symmetric shear strain of the ring-shape configuration. The displacement obtained at 200 °C was about 20 μm, 11–14 times that of a normal piezoelectric plate of identical size.

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Applied Physics Letters  (Volume:101 ,  Issue: 1 )