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Journal of Applied Physics : Comparison of sensitivities of carbon nanotube field-effect transistor biosensors with and without top metal gate

By Masuhiro Abe, Katsuyuki Murata, Tatsuaki Ataka, and Kazuhiko Matsumoto

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Book Id: WPLBN0002169439
Format Type: PDF eBook :
File Size: Serial Publication
Reproduction Date: 17 November 2008

Title: Journal of Applied Physics : Comparison of sensitivities of carbon nanotube field-effect transistor biosensors with and without top metal gate  
Author: Masuhiro Abe, Katsuyuki Murata, Tatsuaki Ataka, and Kazuhiko Matsumoto
Volume: Issue : November 2008
Language: English
Subject: Science, Physics, Natural Science
Collections: Periodicals: Journal and Magazine Collection (Contemporary), Journal of Applied Physics Collection
Historic
Publication Date:
Publisher: American Institute of Physics

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Katsuyuki Murata, Tatsuaki Ataka, And Kazuhiko Matsumot, M. A. (n.d.). Journal of Applied Physics : Comparison of sensitivities of carbon nanotube field-effect transistor biosensors with and without top metal gate. Retrieved from http://worldebookfair.com/


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Description: The sensitivities of biosensors using top-gate-type carbon nanotube field-effect transistors (CNT-FETs) with and without a top metal gate were compared. The CNT-FET biosensor without the top metal gate (sensor I) showed about three times higher transconductance than the one with the top metal gate (sensor II) when they were modulated by a reference gate electrode placed in a solution. Further, the sensitivity of sensor I was three times higher than sensor II. These results were attributed to the shielding effect of the top metal gate electrode placed in the solution, which was proved by a numerical simulation.

 

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