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Proceedings Paper

PVDF core-free actuator for Braille displays: design, fabrication process, and testing
Author(s): Thomas Levard; Paul J. Diglio; Sheng-Guo Lu; Lee J. Gorny; Christopher D. Rahn; Q. M. Zhang
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Paper Abstract

Refreshable Braille displays require many, small diameter actuators to move the pins. The electrostrictive P(VDF-TrFECFE) terpolymer can provide the high strain and actuation force under modest electric fields that are required of this application. In this paper, we develop core-free tubular actuators and integrate them into a 3 × 2 Braille cell. The films are solution cast, stretched to 6 μm thick, electroded, laminated into a bilayer, rolled into a 2 mm diameter tube, bonded, and provided with top and bottom contacts. Experimental testing of 17 actuators demonstrates significant strains (up to 4%). A novel Braille cell is designed and fabricated using six of these actuators.

Paper Details

Date Published: 29 March 2011
PDF: 9 pages
Proc. SPIE 7976, Electroactive Polymer Actuators and Devices (EAPAD) 2011, 797611 (29 March 2011); doi: 10.1117/12.880561
Show Author Affiliations
Thomas Levard, The Pennsylvania State Univ. (United States)
Paul J. Diglio, The Pennsylvania State Univ. (United States)
Sheng-Guo Lu, The Pennsylvania State Univ. (United States)
Lee J. Gorny, The Pennsylvania State Univ. (United States)
Christopher D. Rahn, The Pennsylvania State Univ. (United States)
Q. M. Zhang, The Pennsylvania State Univ. (United States)


Published in SPIE Proceedings Vol. 7976:
Electroactive Polymer Actuators and Devices (EAPAD) 2011
Yoseph Bar-Cohen; Federico Carpi, Editor(s)

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