Hydration properties of carbon nanotubes and their effects on electrical and biosensor applications

Yon-Hua Tzeng, T. S. Huang, Yi-Chun Chen, C. Liu, Y. K. Liu

Research output: Contribution to journalArticle

23 Citations (Scopus)

Abstract

As-grown carbon nanotubes grown by thermal chemical vapor deposition are hydrophobic, i.e., more attractive to nonpolar groups than polar substances. The surfaces of hydrophobic carbon nanotubes have been treated by means of electrochemical, thermal, and plasma oxidation processes to convert them to hydrophilic surfaces. Thermal oxidation of carbon nanotubes in ambient air or a brief exposure to a plasma in ambient air had slight effects on electron field emission properties; but, electrochemically treated carbon nanotubes emitted a lower electron field emission current and required higher electric fields to emit the same current compared with the electron field emission characteristics of as-grown carbon nanotubes. The immobilization of antibodies on hydrophilic carbon nanotubes was enhanced significantly compared with that on hydrophobic carbon nanotubes. Binding of Staphylococcus aureus bacteria that were specific to the immobilized antibody, on hydrophilic carbon nanotubes for biosensor applications has been demonstrated.

Original languageEnglish
Pages (from-to)193-201
Number of pages9
JournalNew Diamond and Frontier Carbon Technology
Volume14
Issue number3
Publication statusPublished - 2004 Mar 15

Fingerprint

Carbon Nanotubes
bioinstrumentation
Biosensors
Hydration
hydration
Carbon nanotubes
carbon nanotubes
Field emission
electron emission
field emission
antibodies
Antibodies
oxidation
Electrons
Plasma Gases
Immobilized Antibodies
Plasmas
Oxidation
staphylococcus
electrochemical oxidation

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films

Cite this

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Hydration properties of carbon nanotubes and their effects on electrical and biosensor applications. / Tzeng, Yon-Hua; Huang, T. S.; Chen, Yi-Chun; Liu, C.; Liu, Y. K.

In: New Diamond and Frontier Carbon Technology, Vol. 14, No. 3, 15.03.2004, p. 193-201.

Research output: Contribution to journalArticle

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