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Optical Materials Express

Optical Materials Express

  • Editor: David J. Hagan
  • Vol. 3, Iss. 9 — Sep. 1, 2013
  • pp: 1516–1522

Study of electro-optical properties of templated blue phase liquid crystals

Hung-Chang Jau, Wei-Ming Lai, Chun-Wei Chen, Yi-Ting Lin, Hsu-Kuan Hsu, Chien-Hung Chen, Chuan-Chung Wang, and Tsung-Hsien Lin  »View Author Affiliations


Optical Materials Express, Vol. 3, Issue 9, pp. 1516-1522 (2013)
http://dx.doi.org/10.1364/OME.3.001516


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Abstract

A templating technique is proposed for improving the electro-optical properties of polymer stabilized blue phase (PSBP). After polymerizing a monomer-doped blue phase, the remaining chiral nematic liquid crystal was removed to create a porous free-standing cast that retained the 3D structure of the blue phase. The effects of the helical twisting power of the filling mesogen on the electro-optical properties of PSBP were studied. The driving voltage effectively declined as the proportion of chiral dopant in the filling material was decreased. Because of the achiral mesogen tended to be less twisted intrinsically, the elastic restoring force helped the electric field to unwind the helical structure, which was supported by the polymer anchoring force. Replacing the chiral agent with a reverse-handed chiral further reduced the driving voltage by 40% and doubled the value of the resulting figure of merit.

© 2013 OSA

OCIS Codes
(120.2040) Instrumentation, measurement, and metrology : Displays
(160.3710) Materials : Liquid crystals
(160.5470) Materials : Polymers
(220.4000) Optical design and fabrication : Microstructure fabrication

ToC Category:
Liquid Crystals

History
Original Manuscript: July 18, 2013
Revised Manuscript: August 16, 2013
Manuscript Accepted: August 17, 2013
Published: August 27, 2013

Citation
Hung-Chang Jau, Wei-Ming Lai, Chun-Wei Chen, Yi-Ting Lin, Hsu-Kuan Hsu, Chien-Hung Chen, Chuan-Chung Wang, and Tsung-Hsien Lin, "Study of electro-optical properties of templated blue phase liquid crystals," Opt. Mater. Express 3, 1516-1522 (2013)
http://www.opticsinfobase.org/ome/abstract.cfm?URI=ome-3-9-1516


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