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Proceedings Paper

Flexible electrode and its characteristics for microactuators
Author(s): Youngdae Jung; Haedo Jeong; Eunsoo Jeong; Hansu Park; Namju Jo
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Paper Abstract

Flexible electrode is essential for longitudinal or traverse type of micro-actuator using electrostrictive(ES) polymer. In this paper, two types of flexible electrode using conductive polymer(CP), carbon black composite and polypyrrole(PPy), was developed for a membrane type and unimorph type ES actuator using PU. At first, electrode using carbon black powder mixed with water-dispersed polyurethane was made and its displacement and dynamic characteristics were measured and compared with commercial conductive grease. Water-dispersed PU was produced by modified acetone process, using methylethylketone and acetone as solvent via NCO-terminated prepolymer. PU actuator was manufactured by stacking carbon black electrode(CBE) at both sides of half cured PU film with spin coater. Compared with conductive grease, displacement using carbon black electrode is approximately 60%. It can be thought that CBE has considerably more viscosity and less conductivity than conductive grease. Although PPy can be made from tens of nanometer to tens of micrometer thickness, phase shift occurs between PU film and PPy because of high temperature CVD process. It is estimated that high surface energy and low surface quality disturbs contacts with PU film.

Paper Details

Date Published: 14 November 2002
PDF: 7 pages
Proc. SPIE 4935, Smart Structures, Devices, and Systems, (14 November 2002); doi: 10.1117/12.469402
Show Author Affiliations
Youngdae Jung, Pusan National Univ. (South Korea)
Haedo Jeong, Pusan National Univ. (South Korea)
Eunsoo Jeong, Pusan National Univ. (South Korea)
Hansu Park, Pusan National Univ. (South Korea)
Namju Jo, Pusan National Univ. (South Korea)

Published in SPIE Proceedings Vol. 4935:
Smart Structures, Devices, and Systems
Erol C. Harvey; Derek Abbott; Vijay K. Varadan, Editor(s)

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