Please use this identifier to cite or link to this item: http://nopr.niscair.res.in/handle/123456789/2321
Title: Advances in chemical sensors, biosensors and microsystems based on ion-sensitive field-effect transistor
Authors: Khanna, V K
Keywords: ISFET
Chemical sensor
Biosensor
Microsystem
Analytical instrumentation
Issue Date: Apr-2007
Publisher: CSIR
Series/Report no.: C 12, C 25, G 01, H01 L
Abstract: Introduced as a tool for electrophysiology three and a half decades ago, the ion-sensitive field-effect transistor (ISFET) is a generic electrochemical structure offering a family of analytical devices for applications in agriculture, food processing, medical diagnostics, pharmaceuticals, paper, pulp and chemical industries, and environmental control. Besides its use as a chemical sensor, this device has also served as the electrical transduction element for many enzyme and immunological biosensors. This paper presents the current status of this microelectronic device in terms of the theoretical understanding of its operational mechanism, the techniques used for its fabrication and the measurement circuits used in instrumentation. The state of the art of ISFET as a chemical and biosensor is examined, major problems in this area are discussed, perspectives of recent interesting developments are described and future research directions are indicated. Highlights of the work done on ISFET at our institute are presented.
Description: 345-353
URI: http://hdl.handle.net/123456789/2321
ISSN: 0019-5596
Appears in Collections:IJPAP Vol.45(04) [April 2007]

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