Study of LAAS Sensitivity Using Back Surface Electric Field

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カテゴリ: 論文誌(論文単位)グループ名: 【E】センサ・マイクロマシン部門発行日: 2021/01/01タイトル(英語): Study of LAAS Sensitivity Using Back Surface Electric Field著者名: Keita Kosugi (Saitama University), Hidekazu Uchida (S aitama University)著者名(英語): Keita Kosugi (Saitama University), Hidekazu Uchida (Saitama University)キーワード: light addressable amperometric sensor，internal photoelectric effect，back surface field，electrochemical array sensor，redox current要約(英語): Enzyme screening is an essential requirement in various fields. Electrochemical measurements have various advantages such as quick response and inexpensive measurement; however, the number of wires of the array electrode increase with the number of measurements. To solve this problem, we have developed the light addressable amperometric sensor (LAAS). This study demonstrates the performance of this two-dimensional electrochemical array sensor. LAAS with a back surface electric field (BSF), which increases the number of photoexcited carriers, and LAAS without BSF were prepared. The formation of the diode in the device was confirmed by measurement of the I-V characteristics. The resolution was calculated by comparing the two-dimensional images obtained by the measurement of the prepared solution. Finally, the concentration dependence of the ferricyanide ion/ferrocyanide ion was measured, with detection limits of 270 μM for LAAS without BSF and 17 μM for LAAS with BSF. LAAS has the potential to be applied to high-throughput screening using enzymes.本誌: 電気学会論文誌E（センサ・マイクロマシン部門誌） Vol.141 No.1 （2021） 特集：センサ・マイクロマシン英文特集号本誌掲載ページ: 14-20 p原稿種別: 論文／英語電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejsmas/141/1/141_14/_article/-char/ja/ Show more