Switchable Bragg diffraction from liquid crystal in colloid-templated structures

Citation:

Mach, P. ; Wiltzius, P. ; Megens, M. ; Weitz, D. A. ; Lin, K. H. ; Lubensky, T. C. ; Yodh, A. G. Switchable Bragg diffraction from liquid crystal in colloid-templated structures. Europhysics Letters 2002, 58, 679-685. Copy at http://www.tinyurl.com/mlmgffx
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Abstract:

We have incorporated nematic liquid crystal into periodic, polymer host structures templated from self-assembled colloids. Using these composite materials, we demonstrate the first electrically switchable three-dimensional Bragg diffraction. The switchable beam deflection is potentially useful for non-mechanical beam steering and optical beam splitting devices. We compare the electro-optic response of our templated liquid-crystal/polymer composites with conventional polymer-dispersed liquid crystals (PDLCs). Our data reveal a qualitatively different and faster response for liquid crystal distributed within a connected cavity network, as compared to isolated liquid-crystal droplets within a polymer matrix.

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Times Cited: 27

Last updated on 03/24/2014