Silicon Nanoribbon pH Sensors Protected by a Barrier Membrane with Carbon Nanotube Porins

Xi Chen, Huanan Zhang, Ramya H. Tunuguntla, Aleksandr Noy

Research output: Contribution to journalArticle

7 Scopus citations

Abstract

Limited biocompatibility and fouling propensity can restrict real-world applications of a large variety of biosensors. Biological systems are adept at protecting and separating vital components of biological machinery with semipermeable membranes that often contain defined pores and gates to restrict transmembrane transport only to specific species. Here we use a similar approach for creating fouling-resistant pH sensors. We integrate silicon nanoribbon transistor sensors with an antifouling lipid bilayer coating that contains proton-permeable carbon nanotube porin (CNTP) channels and demonstrate robust pH detection in a variety of complex biological fluids.

Original languageEnglish (US)
JournalNano Letters
DOIs
StateAccepted/In press - Jan 1 2018
Externally publishedYes

Keywords

  • antifouling coating
  • biosensing
  • Carbon nanotube porins
  • silicon nanoribbon sensors

ASJC Scopus subject areas

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

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