전도성 고분자 성장을 이용한 MEA 전극 임피던스 조절에 대한 연구

Abstract

In this paper, we present polymerization condition at which conductive polymer poly(3,4-ethylenedioxytheophene) (PEDOT) known as bio-compatible material was grown on the MEA(Multi Electrode Array) electrodes and successively reduced the impedance of MEA electrodes. Proposed polymerization condition was selected to be similar to neural stimulation condition which is safe to neurons, so polymerization might be executed during the primary neural culture. We also examined the polymerization effect on the impedance of MEA electrodes. Proper impedance of MEA electrodes is essential for the neurophysiological studies such as neural stimulation and neural signal recording. Although several methods for impedance reduction have already been developed, all of them have difficulties acquiring desired impedance values in the case that initial impedances are quite different. Our method has a characteristic merit which can regulate excessively different initial impedance values.