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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 38, Iss. 31 — Nov. 1, 1999
  • pp: 6581–6586

Optically anisotropic polyethylene–gold nanocomposites

Yvo Dirix, Cyril Darribère, Wilbert Heffels, Cees Bastiaansen, Walter Caseri, and Paul Smith  »View Author Affiliations


Applied Optics, Vol. 38, Issue 31, pp. 6581-6586 (1999)
http://dx.doi.org/10.1364/AO.38.006581


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Abstract

Gold colloids coated with a self-assembled monolayer of an alkanethiol were introduced into a polyethylene matrix by means of solution-casting techniques. We oriented the resulting nanocomposites by uniaxial drawing in the solid state. The absorption spectra of the drawn nanocomposites in the visible wavelength region were found to depend strongly on the polarization direction of incident light. The materials appeared, for instance, red or blue if the light was polarized perpendicular or parallel, respectively, to the drawing axis. The observed optical anisotropy is thought to originate in the morphology of the composites that composed uniaxially oriented, pearl-necklace arrays of nanoparticles with a high aspect ratio, as observed in transmission electron microscopy. It is shown that the polymer-inorganic nanocomposites can be employed as color polarizing filters.

© 1999 Optical Society of America

OCIS Codes
(160.4670) Materials : Optical materials
(160.4760) Materials : Optical properties
(160.5470) Materials : Polymers
(220.1140) Optical design and fabrication : Alignment
(230.5440) Optical devices : Polarization-selective devices
(330.1690) Vision, color, and visual optics : Color

History
Original Manuscript: March 17, 1999
Revised Manuscript: July 19, 1999
Published: November 1, 1999

Citation
Yvo Dirix, Cyril Darribère, Wilbert Heffels, Cees Bastiaansen, Walter Caseri, and Paul Smith, "Optically anisotropic polyethylene–gold nanocomposites," Appl. Opt. 38, 6581-6586 (1999)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-38-31-6581

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