K+-selective field-effect sensors as transducers for bioelectronic

被引：43
作者：
Mourzina, Y
Mai, T
Poghossian, A
Ermolenko, Y
Yoshinobu, T
Vlasov, Y
Iwasaki, H
Schöning, MJ
机构：
[1] Res Ctr, Inst Thin Films & Interfaces, D-52425 Julich, Germany
[2] St Petersburg State Univ, Fac Chem, St Petersburg 199034, Russia
[3] Univ Appl Sci Aachen, Div Julich, D-52428 Julich, Germany
[4] Osaka Univ, Inst Sci & Ind Res, Ibaraki, Osaka 5670047, Japan
来源：
ELECTROCHIMICA ACTA | 2003年 / 48卷 / 20-22期
关键词：
capacitive field-effect sensor; electrolyte/membrane/insulator/semicoiiductor structure; PVC-based membranes; potassium sensitivity; impedance spectroscopy; capacitance/voltage method;
D O I：
10.1016/S0013-4686(03)00402-X
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
A K+-sensitive capacitive electrolyte-membrane-insulator-semiconductor (EMIS) sensor has been developed. The sensor utilizes a valinomycin-containing PVC-based membrane with different contents of plasticizer. This new type of sensor has been investigated in terms of its intrinsic characteristics, like impedance behavior, capacitance/voltage characteristics and frequency dependence. The optimized working conditions of the sensor and various membrane compositions have been studied with regard to the sensitivity performance in different electrolytes. The possibility of future applications for the measurement of extracellular potassium-ion concentrations are discussed. (C) 2003 Elsevier Science Ltd. All rights reserved.
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收藏
页码：3333 / 3339
页数：7
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