Abstract
This present paper describes some test results about micro-patterning and actuation of conductive polymer (polypyrrole, PPy) for a development of mechanical stimulation device for cultured cells. Pyrrole molecules are selectively electrochemically polymerized with NaDBS to be patterned in dot array using an OFPR template. The fabricated PPy dot has circular truncated cone shape, in which the bottom diameter changed from approximately 10 to 30μm with electric charge. An applied voltage makes the PPy dots expanded or contracted by adsorption or desorption of ions in electrolyte solution. A cyclic change of PPy dot diameter is in-situ observed by a CCD microscope. It is confirmed that the increase of PPy dot diameter corresponds to lateral strain in contraction state. It is found that the maximum change of PPy dot diameter also reaches to 10% at +1V. It is confirmed that the surface of PPy dot has cell adhesiveness after protein coating.
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