Photoelectrical cell utilizing bacteriorhodopsin on a hole array fabricated by micromachining techniques

Kenji Fukuzawa, Kei Ichi Yanagisawa, Hiroki Kuwano

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)

Abstract

A bacteriorhodopsin (bR)-based photoelectrical cell has been fabricated by micromachining. A thin film with 2 μm hole arrays is used as a support membrane for a purple membrane (PM). This highly oriented, thin and uniform PM is suspended on the 2 μm holes by electrodeposition. The membrane is less than 100 nm thick. The support membrane makes it easy to keep the bR molecules in contact with water. A stable photocurrent generated by the photoelectrical cell indicates that the suspended PM transports protons across it. This photocell can be used as a light-to-electrochemical energy converter or model membrane on a pH or pKa gradient.

Original languageEnglish
Pages (from-to)121-126
Number of pages6
JournalSensors and Actuators, B: Chemical
Volume30
Issue number2
DOIs
Publication statusPublished - 1996 Jan 15
Externally publishedYes

Keywords

  • Bacteriorhodopsin
  • Hole arrays
  • Micromachining
  • Photoelectrical cells

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Instrumentation
  • Condensed Matter Physics
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Electrical and Electronic Engineering
  • Materials Chemistry

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