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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 18, Iss. 24 — Nov. 22, 2010
  • pp: 24842–24852

Analysis of effects of oxidized multiwalled carbon nanotubes on electro-optic polymer/liquid crystal thin film gratings

Sameet K. Shriyan and Adam K. Fontecchio  »View Author Affiliations

Optics Express, Vol. 18, Issue 24, pp. 24842-24852 (2010)

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This work focuses on experimentally demonstrating the modification in diffusion kinetics, formation of holographic polymer dispersed liquid crystal gratings and an improvement in its electro optic response by doping them with multi-walled carbon nanotubes. Results indicate a faster rise and fall times which is attributed to the reduction in size of the liquid crystal droplets formed and a reduction in switching voltage due to change in dielectric properties of the medium as manifested by a rise in capacitance. Real time diffraction efficiency measurements reveal a time delay in the appearance of the diffracted order due to non-participation of the nanotube in the polymerization induced phase separation process. An analysis of this effect is presented based on the Stoke- Einstein’s diffusion equation incorporating shape anisotropy of the nanotubes.

© 2010 OSA

OCIS Codes
(050.1950) Diffraction and gratings : Diffraction gratings
(090.2890) Holography : Holographic optical elements
(160.2100) Materials : Electro-optical materials
(130.7408) Integrated optics : Wavelength filtering devices

ToC Category:

Original Manuscript: September 17, 2010
Revised Manuscript: October 21, 2010
Manuscript Accepted: November 1, 2010
Published: November 12, 2010

Sameet K. Shriyan and Adam K. Fontecchio, "Analysis of effects of oxidized multiwalled carbon nanotubes on electro-optic polymer/liquid crystal thin film gratings," Opt. Express 18, 24842-24852 (2010)

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