カーボンナノチューブ味覚センサによる電気化学インピーダンス特性の評価

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タイトル別名
  • Evaluation for Electrochemical Impedance Measurement of Carbon Nanotube Taste Sensor
  • カーボンナノチューブ ミカク センサ ニ ヨル デンキ カガク インピーダンス トクセイ ノ ヒョウカ

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In our laboratory, a nano-bio taste sensor based on carbon nanotubes has been developed. However, previous technique cannot separate elements such as CNT random network or electrode surface etc., because of sensor impedance change in fixed frequency. Electrochemical impedance spectroscopy (EIS) revealed CNT taste sensor with two R/C parallel circuits. Experimental complex plane plots were reproduced using a computer simulation program based upon the lumped equivalent circuit approach. It was found that the sensor has two relaxation times, and also that these circuits consist of two elements such as electrode surface and CNT random network.

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