Vapor sensing characteristics of nanoelectromechanical chemical sensors functionalized using surface-initiated polymerization

Heather C. McCaig, Ed Myers, Nathan S. Lewis, Michael L. Roukes

Research output: Contribution to journalArticle

28 Citations (Scopus)

Abstract

Surface-initiated polymerization has been used to grow thick, uniform poly(methyl methacrylate) films on nanocantilever sensors. Cantilevers with these coatings yielded significantly greater sensitivity relative to bare devices as well as relative to devices that had been coated with drop-cast polymer films. The devices with surface-initiated polymer films also demonstrated high selectivity toward polar analytes. Surface-initiated polymerization can therefore provide a straightforward, reproducible method for large-scale functionalization of nanosensors.

Original languageEnglish
Pages (from-to)3728-3732
Number of pages5
JournalNano letters
Volume14
Issue number7
DOIs
Publication statusPublished - Jul 9 2014

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Keywords

  • ATRP
  • Cantilever sensor
  • chemical vapor sensor
  • nanocantilever
  • nanomechanical resonator
  • surface-initiated polymerization

ASJC Scopus subject areas

  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanical Engineering

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