A compact electroactive polymer actuator suitable for refreshable Braille display

The large strain, high elastic modulus, and easy processing of poly(vinylidene fluoride-trifluoroethylene-chlorofluoroethylene) (P(VDF-TrFE-CFE)) electrostrictive terpolymer make it very attractive to replace low strain piezoceramics and piezopolymers in many applications with much improved performa...

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Bibliographic Details
Published in:Sensors and actuators. A. Physical. 2008-05, Vol.143 (2), p.335-342
Main Authors: Ren, Kailiang, Liu, Sheng, Lin, Minren, Wang, Yong, Zhang, Q.M.
Format: Article
Language:English
Subjects:
Actuators
Braille display actuators
Conducting polymer electrodes
Electroactive polymers
Electrode effect
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Summary:The large strain, high elastic modulus, and easy processing of poly(vinylidene fluoride-trifluoroethylene-chlorofluoroethylene) (P(VDF-TrFE-CFE)) electrostrictive terpolymer make it very attractive to replace low strain piezoceramics and piezopolymers in many applications with much improved performance. In this paper, a compact polymer actuator is developed utilizing the electrostrictive terpolymer, which is suitable for full page Braille display and graphic display. Key issues related to the reliability of electroactive polymers used in the compact actuators and for the mass fabrication of these polymer actuators are investigated. Making use of a recently developed conductive polymer, a screen printing deposition method was developed which enables direct deposition of very thin conductive polymer electrode layer (
ISSN:0924-4247
1873-3069
DOI:10.1016/j.sna.2007.10.083