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

54 Scopus citations

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 1 2006

Keywords

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

ASJC Scopus subject areas

  • Biotechnology
  • Biomaterials
  • Chemistry(all)
  • Materials Science(all)

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