Directed assembly of carbon nanotubes on soft substrates for use as a flexible biosensor array

Juntae Koh, Mihye Yi, Byung Yang Lee, Tae Hyun Kim, Joohyung Lee, Young Min Jhon, Seunghun Hong

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

We have developed a method to selectively assemble and align carbon nanotubes (CNTs) on soft substrates for use as flexible biosensors. In this strategy, a thin oxide layer was deposited on soft substrates via low temperature plasma enhanced chemical vapor deposition, and a linker-free assembly process was applied on the oxide surface where the assembly of carbon nanotubes was guided by methyl-terminated molecular patterns on the oxide surface. The electrical characterization of the fabricated CNT devices exhibited a typical p-type gating effect and 1/f noise behavior. The bare oxide regions near CNTs were functionalized with glutamate oxidase to fabricate selective biosensors to detect two forms of glutamate substances existing in different situations: L-glutamic acid, a neurotransmitting material, and monosodium glutamate, a food additive.

Original languageEnglish
Article number505502
JournalNanotechnology
Volume19
Issue number50
DOIs
Publication statusPublished - 2008 Dec 17
Externally publishedYes

Fingerprint

Carbon Nanotubes
Biosensing Techniques
Biosensors
Oxides
Carbon nanotubes
Glutamic Acid
Substrates
Food additives
Sodium Glutamate
Food Additives
Plasma enhanced chemical vapor deposition
Noise
Oxidoreductases
Equipment and Supplies
Temperature
Acids

ASJC Scopus subject areas

  • Bioengineering
  • Chemistry(all)
  • Electrical and Electronic Engineering
  • Mechanical Engineering
  • Mechanics of Materials
  • Materials Science(all)

Cite this

Directed assembly of carbon nanotubes on soft substrates for use as a flexible biosensor array. / Koh, Juntae; Yi, Mihye; Lee, Byung Yang; Kim, Tae Hyun; Lee, Joohyung; Jhon, Young Min; Hong, Seunghun.

In: Nanotechnology, Vol. 19, No. 50, 505502, 17.12.2008.

Research output: Contribution to journalArticle

Koh, Juntae ; Yi, Mihye ; Lee, Byung Yang ; Kim, Tae Hyun ; Lee, Joohyung ; Jhon, Young Min ; Hong, Seunghun. / Directed assembly of carbon nanotubes on soft substrates for use as a flexible biosensor array. In: Nanotechnology. 2008 ; Vol. 19, No. 50.
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