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Proceedings Paper

Ionic liquids and polypyrrole helix tubes: bringing the electronic Braille screen closer to reality
Author(s): Geoffrey M. Spinks; Gordon G. Wallace; Jie Ding; Dezhi Zhou; Binbin Xi; John Gillespie
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Paper Abstract

There is a great need to develop a computer screen based on Braille technology that allows blind people to access computer-based information to the same extent as sighted people. The lack of a "graphical user interface" for the blind severely restricts employment, educational and recreational opportunities readily available to sighted people in the "internet age". Equally, the development of a refreshable 2-D Braille screen offers the EAP community a great opportunity to make a tremendous impact with new actuator technology. In this paper we review progress made in the development of a prototype multi-dot Braille cell using conducting polymer actuators. Two innovations (a helical wire interconnect and ionic liquid electrolytes) have provided significant performance advances in terms of strain rate and cycle lifetime, respectively. Despite these advances, some further challenges remain.

Paper Details

Date Published: 28 July 2003
PDF: 9 pages
Proc. SPIE 5051, Smart Structures and Materials 2003: Electroactive Polymer Actuators and Devices (EAPAD), (28 July 2003); doi: 10.1117/12.484721
Show Author Affiliations
Geoffrey M. Spinks, Univ. of Wollongong (Australia)
Gordon G. Wallace, Univ. of Wollongong (Australia)
Jie Ding, Univ. of Wollongong (Australia)
Dezhi Zhou, Univ. of Wollongong (Australia)
Binbin Xi, Univ. of Wollongong (Australia)
John Gillespie, Quantum Technology Pty. Ltd. (Australia)

Published in SPIE Proceedings Vol. 5051:
Smart Structures and Materials 2003: Electroactive Polymer Actuators and Devices (EAPAD)
Yoseph Bar-Cohen, Editor(s)

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