Electrochemical response dependent with composition of parallel opposed dual electrode and flow rate in a microchannel

Takeshi Ito, Kenichi Maruyama, Osamu Niwa, Koji Suzuki

研究成果: Paper査読

抄録

We proposed an electrochemical microsystem based on a parallel opposed dual electrochemical detector in a microchannel and studied its properties using potassium ferrocyanide for flow analysis with dual mode cyclic voltammetry (CV) and chronoamperometry (CA). Electrode gap was defined by the channel depth (50 μm). Using our microchip, a highly collection efficiency (Max: 99%) was achieved without miniaturizing the dual electrode by micromachining techniques, when the potential sweep rate was set to 10 mV s-1 without the continuous flow. We also obtained the higher collection efficiency of nearly 100% with a quicker response time of around a few seconds on chronoamperometry (CA). Current amplification contributed to redox cycling was observed.

本文言語English
ページ289-299
ページ数11
出版ステータスPublished - 2004
イベントChemical Sensors VI: Chemical and Biological Sensors and Analytical Methods - Proceedings of the International Symposium - Honolulu, HI, United States
継続期間: 2004 10 32004 10 8

Other

OtherChemical Sensors VI: Chemical and Biological Sensors and Analytical Methods - Proceedings of the International Symposium
国/地域United States
CityHonolulu, HI
Period04/10/304/10/8

ASJC Scopus subject areas

  • 工学(全般)

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