Visual demonstration of the pattern of light-induced electric field on the surface of dried oriented bacteriorhodopsin samples

G. I. Groma, G. Váró, L. Keszthelyi

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Continuous illumination of a dried oriented sample of the purple membrane of Halobacterium halobium induces a steady-state charge separation inside the membranes. The generated electrostatic field was demonstrated by the accumulation of the grains of toner used in the copying machines. At low light intensity, the pattern of the adhered toner follows the shape of the illuminating laser beam. At higher intensity the exposed area becomes blue. This blue form apparently has no charge separation process, since in this instance the toner forms a ring on the contour of the illuminated area.

Original languageEnglish
Pages (from-to)75-77
Number of pages3
JournalJournal of Molecular Electronics
Volume7
Issue number2
Publication statusPublished - Apr 1991

Fingerprint

Bacteriorhodopsins
polarization (charge separation)
Demonstrations
Electric fields
membranes
Membranes
Copying
electric fields
illuminating
luminous intensity
Laser beams
Lighting
illumination
laser beams
rings

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Visual demonstration of the pattern of light-induced electric field on the surface of dried oriented bacteriorhodopsin samples. / Groma, G. I.; Váró, G.; Keszthelyi, L.

In: Journal of Molecular Electronics, Vol. 7, No. 2, 04.1991, p. 75-77.

Research output: Contribution to journalArticle

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