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

Jee Yeon Kim; Jae Hyuk Ahn; Sung Jin Choi; Maesoon Im; Sungho Kim; Juan Publo Duarte; Chang Hoon Kim; Tae Jung Park; Sang Yup Lee; Yang Kyu Choi

doi:10.1109/TNANO.2011.2175006

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

Jee Yeon Kim, Jae Hyuk Ahn, Sung Jin Choi, Maesoon Im, Sungho Kim, Juan Publo Duarte, Chang Hoon Kim, Tae Jung Park, Sang Yup Lee, Yang Kyu Choi

Semiconductor Engineering

Research output: Contribution to journal › Article › peer-review

105 Scopus citations

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.

Original language	English
Article number	6082449
Pages (from-to)	390-394
Number of pages	5
Journal	IEEE Transactions on Nanotechnology
Volume	11
Issue number	2
DOIs	https://doi.org/10.1109/TNANO.2011.2175006
State	Published - Mar 2012

Keywords

Avian influenza
electrical biosensor
underlap field-effect transistor
watery and dry environment

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10.1109/TNANO.2011.2175006

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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.",

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AU - Kim, Chang Hoon

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AU - Choi, Yang Kyu

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

Abstract

Keywords

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