Unusual photoanisotropic alignment in amorphous azobenzene polymers: Photoanisotropy

P.S. Ramanujam

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

It is well known that irradiation of azobenzene polymer films between 490 and 530nm results in alignment of molecules perpendicular to the polarization of the incident beam. I have recently found that irradiation of amorphous azobenzene polymers with linearly polarized light at wavelengths between 560 and 630nm, where the absorption is minimal, results in a possible uniaxial hedgehog arrangement of the molecules. Experiments performed with a dye laser, which can be tuned continuously between 560 and 630nm, are described. Not only azobenzene but also another photosensitive molecule, bacteriorhodopsin, seems to exhibit this behavior.
Original languageEnglish
JournalJournal of the Society for Information Display
Volume23
Issue number5
Pages (from-to)214-217
ISSN1071-0922
DOIs
Publication statusPublished - 2015

Keywords

  • ENGINEERING,
  • MATERIALS
  • OPTICS
  • PHYSICS,
  • azobenzene polymers
  • photoanisotropy

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