NDLI: Solid-state urea biosensor based on the differential method

Content Provider	IEEE Xplore Digital Library
Author	Chung-We Pan Jung-Chuan Chou Tai-Ping Sun Shen-Kan Hsiung
Copyright Year	2001
Abstract	In this paper, the solid-state urea biosensor was successfully fabricated based on the differential method, which contains three parts: the SnO/sub 2//ITO glass electrode used as the pseudoreference electrode; the SnO/sub 2//ITO glass electrode used as the contrast electrode; and the urease/SnO/sub 2//ITO glass electrode used as the enzyme electrode. Correspondingly, this solid-state urea biosensor was fabricated based on the SnO/sub 2//ITO glass electrode, whose simple fabrication process reduces the cost of fabricating the solid-state biosensor. Additionally, as revealed in the experimental results, the solid-state urea biosensor has good sensing characteristics between 5 and 80 mg/dl. After fabricating a successful solid-state urea biosensor, an array sensing system was designed to enhance the precision of the solid-state urea biosensor, which comprises four parts: the biosensor system, the input buffer circuit, the differential circuit, and the weighted sum circuit. As indicated in the experimental results of the array sensing system, the sensing characteristic of the array sensing system is similar to the mean sensing characteristic from four solid-state biosensors. Therefore, the sensing signal of the solid-state urea biosensor can be averaged using the array sensing system. In summary, this study successfully investigated a solid-state urea biosensor and designed an array sensing system to increase the precision of solid-state urea biosensors.
Sponsorship	IEEE Sensors Council
Starting Page	269
Ending Page	275
Page Count	7
File Size	431849
File Format	PDF
ISSN	1530437X
Volume Number	6
Issue Number	2
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2006-04-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Solid state circuits Biosensors Electrodes Indium tin oxide Glass Sensor arrays Sun Fabrication FETs Semiconductor thin films solid-state urea biosensor Array sensing system differential method pseudoreference electrode SnO
Content Type	Text
Resource Type	Article
Subject	Instrumentation Electrical and Electronic Engineering

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