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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 17, Iss. 12 — Jun. 8, 2009
  • pp: 9637–9647

Observation of a photo wetting effect on anisotropic liquid-solid interfaces

Guillaume Goubert and Tigran Galstian  »View Author Affiliations

Optics Express, Vol. 17, Issue 12, pp. 9637-9647 (2009)

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This paper reports on the experimental observation of an anisotropic photo controlled wetting effect. We discuss how capillary propagation of nematic liquid crystals in a “sandwich” cell is blocked in areas exposed to light. We postulate that the underlying mechanism is related to the optical reorientation of molecules on the surface of the surrounding solid, which in turn, forces a corresponding reorientation of the liquid crystal molecules. The corresponding orientation deformation energy of the liquid then changes the balance of forces and the corresponding capillary action.

© 2009 Optical Society of America

OCIS Codes
(160.5470) Materials : Polymers
(230.5440) Optical devices : Polarization-selective devices
(310.6860) Thin films : Thin films, optical properties
(350.6670) Other areas of optics : Surface photochemistry

ToC Category:

Original Manuscript: February 19, 2009
Revised Manuscript: April 11, 2009
Manuscript Accepted: April 19, 2009
Published: May 26, 2009

Guillaume Goubert and Tigran Galstian, "Observation of a photo wetting effect on anisotropic liquid-solid interfaces," Opt. Express 17, 9637-9647 (2009)

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