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
Issue number11
StatePublished - Nov 1 2006



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

ASJC Scopus subject areas

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

Cite this

Forzani, E., Li, X., Zhang, P., Tao, N., Zhang, R., Amlani, I., Tsui, R., & Nagahara, L. A. (2006). Tuning the chemical selectivity of SWNT-FETs for detection of heavy-metal ions. Small, 2(11), 1283-1291. https://doi.org/10.1002/smll.200600185