Electrochemical nanoneedle biosensor based on multiwall carbon nanotube

Hankil Boo; Ran A. Jeong; Sejin Park; Keun Soo Kim; Kay Hyeok An; Young Hee Lee; Ji Hyung Han; Hee Chan Kim; Taek Dong Chung

doi:10.1021/ac0508595

Electrochemical nanoneedle biosensor based on multiwall carbon nanotube

Hankil Boo
, Ran A. Jeong
, Sejin Park
, Keun Soo Kim
, Kay Hyeok An
, Young Hee Lee
, Ji Hyung Han
, Hee Chan Kim
, Taek Dong Chung

Department of Physics

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

104 Scopus citations

Abstract

We report the fabrication and analytical functions of a biosensor based on a nanoneedle consisting of a multiwall carbon nanotube attached to the end of an etched tungsten tip. The devised electrode is the smallest needle-type biosensor reported to date. The nanoneedles prepared in this work are 30 nm in diameter and 2-3 μm in length. Dopamine and glutamate, which are physiologically important neurotransmitters, were successfully detected using these nanoneedles. Bare nanoneedles detected dopamine in the range from 100 to 1000 μM by differential pulse voltammetry, and enzyme-modified nanoneedles were able to respond to glutamate in the 100-500 μM range by potentiostatic amperometry.

Original language	English
Pages (from-to)	617-620
Number of pages	4
Journal	Analytical Chemistry
Volume	78
Issue number	2
DOIs	https://doi.org/10.1021/ac0508595
State	Published - 15 Jan 2006

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title = "Electrochemical nanoneedle biosensor based on multiwall carbon nanotube",

abstract = "We report the fabrication and analytical functions of a biosensor based on a nanoneedle consisting of a multiwall carbon nanotube attached to the end of an etched tungsten tip. The devised electrode is the smallest needle-type biosensor reported to date. The nanoneedles prepared in this work are 30 nm in diameter and 2-3 μm in length. Dopamine and glutamate, which are physiologically important neurotransmitters, were successfully detected using these nanoneedles. Bare nanoneedles detected dopamine in the range from 100 to 1000 μM by differential pulse voltammetry, and enzyme-modified nanoneedles were able to respond to glutamate in the 100-500 μM range by potentiostatic amperometry.",

author = "Hankil Boo and Jeong, \{Ran A.\} and Sejin Park and Kim, \{Keun Soo\} and An, \{Kay Hyeok\} and Lee, \{Young Hee\} and Han, \{Ji Hyung\} and Kim, \{Hee Chan\} and Chung, \{Taek Dong\}",

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AU - Boo, Hankil

AU - Jeong, Ran A.

AU - Park, Sejin

AU - Kim, Keun Soo

AU - An, Kay Hyeok

AU - Lee, Young Hee

AU - Han, Ji Hyung

AU - Kim, Hee Chan

AU - Chung, Taek Dong

PY - 2006/1/15

Y1 - 2006/1/15

N2 - We report the fabrication and analytical functions of a biosensor based on a nanoneedle consisting of a multiwall carbon nanotube attached to the end of an etched tungsten tip. The devised electrode is the smallest needle-type biosensor reported to date. The nanoneedles prepared in this work are 30 nm in diameter and 2-3 μm in length. Dopamine and glutamate, which are physiologically important neurotransmitters, were successfully detected using these nanoneedles. Bare nanoneedles detected dopamine in the range from 100 to 1000 μM by differential pulse voltammetry, and enzyme-modified nanoneedles were able to respond to glutamate in the 100-500 μM range by potentiostatic amperometry.

AB - We report the fabrication and analytical functions of a biosensor based on a nanoneedle consisting of a multiwall carbon nanotube attached to the end of an etched tungsten tip. The devised electrode is the smallest needle-type biosensor reported to date. The nanoneedles prepared in this work are 30 nm in diameter and 2-3 μm in length. Dopamine and glutamate, which are physiologically important neurotransmitters, were successfully detected using these nanoneedles. Bare nanoneedles detected dopamine in the range from 100 to 1000 μM by differential pulse voltammetry, and enzyme-modified nanoneedles were able to respond to glutamate in the 100-500 μM range by potentiostatic amperometry.

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JO - Analytical Chemistry

JF - Analytical Chemistry

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ER -

Electrochemical nanoneedle biosensor based on multiwall carbon nanotube

Abstract

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