Mr. Young Dae Jung Profile

Young Dae Jung

at Pusan National Univ

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Proceedings Article | 14 November 2002 Paper

Flexible electrode and its characteristics for microactuators

Youngdae Jung, Haedo Jeong, Eunsoo Jeong, Hansu Park, Namju Jo

Proceedings Volume 4935, (2002) https://doi.org/10.1117/12.469402

KEYWORDS: Electrodes, Polymers, Carbon, Actuators, Polymeric actuators, Composites, Polyurethane, Silver, Manufacturing, Chemical vapor deposition

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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.

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