Directly amplified redox sensor for on-chip chemical analysis
Directly amplified redox sensor for on-chip chemical analysis
复制标题
用于片上化学分析的直接放大氧化还原传感器
DOI：
10.7567/jjap.53.036702
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发表时间：
2014
影响因子：
1.5
通讯作者：
K. Sawada
中科院分区：
文献类型：
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作者：
Sou Takahashi;M. Futagawa;M. Ishida;K. Sawada
近年来，许多研究小组研究了用于化学分析的氧化还原传感器。氧化还原传感器具有某些强大的优势，例如它能够检测传感区域内的多个离子，并且能够通过使用电压和电流信号来测量材料的浓度。然而，当浓度或传感面积减小时，氧化还原传感器的输出电流信号减小。因此，我们建议使用放大氧化还原传感器（ARS）来测量小电流信号。所提出的传感器由工作电极和双极晶体管组成。在这项研究中，我们制造了一个ARS传感器，并使用集成双极晶体管的电流信号放大进行低浓度测量。该传感器芯片利用循环伏安法成功检测到浓度低至10 μ M的铁氰化钾（K3[Fe(CN)6]）。
In recent years, many groups have studied redox sensors for chemical analysis. A redox sensor has certain powerful advantages, such as its ability to detect multiple ions inside the sensing area, and its ability to measure concentrations of materials by using voltage and current signals. However, the output current signal of a redox sensor decreases when either concentration or sensing area decreases. Therefore, we propose the use of an amplified redox sensor (ARS) for measuring small current signals. The proposed sensor consists of a working electrode combined with a bipolar transistor. In this study, we fabricated an ARS sensor and performed low-concentration measurements using current signal amplification with an integrated bipolar transistor. The sensor chip successfully detected a potassium ferricyanide (K3[Fe(CN)6]) concentration of as low as 10 µM using cyclic voltammetry.
影响因子：
4.6
作者：
T. Tokuda;Kunihiro Tanaka;Masamichi Matsuo;K. Kagawa;M. Nunoshita;J. Ohta
通讯作者：
T. Tokuda;Kunihiro Tanaka;Masamichi Matsuo;K. Kagawa;M. Nunoshita;J. Ohta