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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 16, Iss. 10 — May. 12, 2008
  • pp: 6910–6920

Light-induced reorientation and birefringence in polymeric dispersions of nano-sized crystals

Roberto Termine, Iolinda Aiello, Nicolas Godbert, Mauro Ghedini, and Attilio Golemme  »View Author Affiliations


Optics Express, Vol. 16, Issue 10, pp. 6910-6920 (2008)
http://dx.doi.org/10.1364/OE.16.006910


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Abstract

Nanocrystals (50–250 nm) of a Palladium complex within a polyisobutylmethacrylate matrix were prepared by a phase separation method. In these dispersions, a light-induced birefringence with Δn ~10-3 was induced, without the application of an electric field. This effect was related to the photoconducting properties of the dispersion. Evidence for charge photogeneration without any applied field was obtained. The photorefractive behaviour of the material confirmed that the nanocrystals reorientation is a consequence of photoconducting properties. A light-generated electric field E ~3 V/µm was estimated. These results illustrate the potential of materials with a nano-crystalline dispersion morphology as light-responsive media.

© 2008 Optical Society of America

OCIS Codes
(160.4890) Materials : Organic materials
(160.5140) Materials : Photoconductive materials
(160.5320) Materials : Photorefractive materials
(160.6000) Materials : Semiconductor materials
(160.4236) Materials : Nanomaterials
(160.5335) Materials : Photosensitive materials

ToC Category:
Materials

History
Original Manuscript: February 13, 2008
Revised Manuscript: April 23, 2008
Manuscript Accepted: April 23, 2008
Published: April 30, 2008

Citation
Roberto Termine, Iolinda Aiello, Nicolas Godbert, Mauro Ghedini, and A. Golemme, "Light-induced reorientation and birefringence in polymeric dispersions of nano-sized crystals," Opt. Express 16, 6910-6920 (2008)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-16-10-6910


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