An underlap channel-embedded field-effect transistor for biosensor application in watery and dry environment

Title
An underlap channel-embedded field-effect transistor for biosensor application in watery and dry environment
Authors
임매순김지연안재혁최성진김성호김창훈박태정이상엽최양규
Issue Date
2012-03
Publisher
IEEE transactions on nanotechnology
Citation
VOL 11, NO 2-394
Abstract
An underlap channel-embedded FET is proposed for electrical, label-free biosensor in both watery and dry environments, and current-voltage characteristics measured under each environment are compared. To investigate the effectiveness of the underlap device as a biosensor for both environments, antigen-antibody binding of an avian influenza (AI) is used. Antibody of AI binding on antigen-immobilized surface provides additional negative charge on underlap surface, and they give rise to channel potential increasing and result in drain current reduction. In this study, we have verified that the biosensor characteristics measured under dry environment is valid as much as they are valid for watery environment.
URI
http://pubs.kist.re.kr/handle/201004/71030
ISSN
1536-125X
Appears in Collections:
KIST Publication > Article
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