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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 20, Iss. 15 — Jul. 16, 2012
  • pp: 16777–16784

Particular thermally induced phase separation of liquid crystal and poly(N-vinyl carbazole) films and its application

Yuan-Di Chen, Andy Ying-Guey Fuh, and Ko-Ting Cheng  »View Author Affiliations

Optics Express, Vol. 20, Issue 15, pp. 16777-16784 (2012)

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In the current study, a method of particular thermally induced phase separation (TIPS) of liquid crystals (LCs) and polymers is presented. The method involves a combination of dissolution process and TIPS. The LCs and poly(N-vinyl carbazole) (PVK) play the roles of solvent and solute, respectively, during the processes of particular TIPS. The nematic LC sample fabricated by two substrates coated with uniform PVK films is heated and then cooled, generating the rough PVK layers onto the surfaces of the substrates. The LC sample having rough PVK layers produces micron-sized, multiple domains of disordered LCs that can scatter incident light. Additionally, an application of a scattering mode light shutter, having the advantages of low driving voltage, polarization-independent scattering, fast response, high contrast ratio, and being polarizer free, is reported.

© 2012 OSA

OCIS Codes
(160.3710) Materials : Liquid crystals
(160.5470) Materials : Polymers
(230.0230) Optical devices : Optical devices

ToC Category:
Optical Devices

Original Manuscript: May 14, 2012
Revised Manuscript: June 27, 2012
Manuscript Accepted: June 29, 2012
Published: July 10, 2012

Yuan-Di Chen, Andy Ying-Guey Fuh, and Ko-Ting Cheng, "Particular thermally induced phase separation of liquid crystal and poly(N-vinyl carbazole) films and its application," Opt. Express 20, 16777-16784 (2012)

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