1Department of Chemistry and Material Engineering, Kansai University, 3-3-35 Yamate-cho, Suita, Osaka, 564-8680, Japan
2Department of Mechanical Systems Engineering, Daiichi Institute of Technology, Japan
3Department of Precision Engineering, Tokai University, Japan
4Department of Applied Chemistry, Osaka Institute of Technology, Japan
5Department of Electronics, Information and Communication Engineering, Osaka Institute of Technology, Japan
6Department of Electrical and Electronic Engineering, Osaka Institute of Technology, Japan
Adv. Mater. Lett., 2013, Current Issue, 4 (2), pp 108-114
DOI: 10.5185/amlett.2012.6367
Publication Date (Web): Dec 09, 2012
Copyright © IAAM-VBRI Press
E-mail: yhirano@kansai-u.ac.jp
A health monitoring system (HMS) involving a blood extraction device with a new type of hybrid biosensor comprising an enzyme and a semiconductor has recently been developed. A MOSFET was used as the transducer. The gate electrode was extracted from the MOSFET using a cable. Gold (Au)-plate-immobilized glucose oxidase (Go) was used as a biosensor and attached to the gate electrode. Go was immobilized on a self-assembled spacer combined with an Au electrode by the cross-link method using BSA as an additional bonding material. The electrode could be used to detect electrons generated by the oxidization of hydrogen peroxide produced by the reaction between Go and glucose using the constant electric current measurement system of the MOSFET-type hybrid biosensor. The sensitivities for the diluted whole blood and blood plasma were 61.4 and 171.2 V/(mol/L), respectively. The hybrid biosensor was useful for HMS.
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