Bias-dependent admittance in hybrid bilayer membranes

Vesselin Nikolov, Aleksandar Radisic, Kalina Hristova, Peter C. Searson

Research output: Contribution to journalArticlepeer-review

Abstract

Artificial bilayer membranes provide a platform for bioelectronic devices based on their structural, sensing, and transport functions. In this letter, we report on the impedance response of an engineered membrane with a lower leaflet of octadecanethiol on gold and an outer leaflet of dioleoylphosphatidylcholine with the monomeric channel protein gramicidin. This hybrid bilayer exhibits an electrical response analogous to a solid-state diode: the admittance is very low (<10 -7 Ω -1 cm -2) over a wide potential range but increases exponentially at negative potentials.

Original languageEnglish (US)
Pages (from-to)7156-7158
Number of pages3
JournalLangmuir
Volume22
Issue number17
DOIs
StatePublished - Aug 15 2006

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Spectroscopy
  • Electrochemistry

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