作者: Thomas Levard , Paul J Diglio , Sheng-Guo Lu , Christopher D Rahn , QM Zhang
DOI: 10.1088/0964-1726/21/1/012001
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摘要: Refreshable Braille displays require many small diameter actuators to move the pins. The electrostrictive P (VDF–TrFE–CFE) terpolymer can provide the high strain and actuation force under modest electric fields that are required for this application. In this paper, we develop core-free tubular actuators and integrate them into a 3× 2 Braille cell. The terpolymer 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 …