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Tuning the chemical selectivity of SWNT-FETs for detection of heavy-metal ions

  • Erica Forzani
  • , Xiulan Li
  • , Peiming Zhang
  • , Nongjian Tao
  • , Ruth Zhang
  • , Islamshah Amlani
  • , Raymond Tsui
  • , Larry A. Nagahara

Research output: Contribution to journalArticlepeer-review

Abstract

A method to functionalize single-walled carbon nanotubes (SWNTs) in a field-effect transistor (FET) device for the selective detection of heavy-metal ions is presented. In this method, peptide-modified polymers were electrochemically deposited onto SWNTs and the selective detection of metal ions was demonstrated by choosing appropriate peptide sequences. The signal transduction mechanism of the peptide-modified SWNT-FETs has also been studied.

Original languageEnglish (US)
Pages (from-to)1283-1291
Number of pages9
JournalSmall
Volume2
Issue number11
DOIs
StatePublished - Nov 2006

Keywords

  • Carbon nanotubes
  • Field-effect transistors
  • Heavy metals
  • Ions
  • Sensors

ASJC Scopus subject areas

  • General Chemistry
  • Engineering (miscellaneous)
  • Biotechnology
  • General Materials Science
  • Biomaterials

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