Polymer stabilization of electrohydrodynamic instability in non-iridescent cholesteric thin films | Zendy

YuCheng Hsiao | Zendy; Wei Lee | Zendy

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Polymer stabilization of electrohydrodynamic instability in non-iridescent cholesteric thin films

Author(s) -

YuCheng Hsiao,

Wei Lee

Publication year - 2015

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.23.022636

Subject(s) - iridescence , materials science , electrohydrodynamics , optics , structural coloration , polymer , cholesteric liquid crystal , liquid crystal , thin film , optoelectronics , viewing angle , photonic crystal , liquid crystal display , nanotechnology , composite material , chemistry , electrode , physics

A non-iridescent cholesterol liquid crystal (CLC) thin film is demonstrated by using the polymer-stabilized electrohydrodymanic (PSEHD) method. The photopolymerized cell made from a CLC/monomer mixture exhibits an optically stable gridlike pattern. The helical axis of thus-formed CLC is aligned with the hydrodynamic flow induced by a space charge motion, and the arrayed CLC grid configuration renders a wide viewing angle thanks to the limited color shift at various lines of sight. The formation of the PSEHD structure was verified with polarized optical microscopy, ascertaining that the electrohydrodymanic pattern can be photo-cured or stabilized. The PSEHD CLC is simple to fabricate and potentially suitable for applications in wide-viewing-angle or non-iridescent devices.

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