Zobrazeno 1 - 10
of 11
pro vyhledávání: '"Chris C. Bowley"'
Improving the Voltage Response of Holographically-Formed Polymer Dispersed Liquid Crystals (H-PDLCs)
Autor:
Jack R. Kelly, Chris C. Bowley, Pavel A. Kossyrev, Tom Fiske, Haiji Yuan, Jenny Colegrove, Gregory P. Crawford, Sorasak Danworaphong
Publikováno v:
Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals. 359:327-339
We report a significant improvement in the switching voltage of holographic PDLCs. This is achieved by doping the prepolymer with small amounts of organic surfactants. The effect of these dopants on other important H-PDLC performance parameters is al
Publikováno v:
Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals. 358:185-198
The intensity of transmitted laser beams is monitored during the holographic formation of polymer dispersed liquid crystal gratings. Significant attenuation of the total transmitted intensity is experienced after brief illumination. In most cases the
Autor:
Gregory P. Crawford, Bhaskar Sethumadhavan, Chris C. Bowley, Michael J. Escuti, Adam K. Fontecchio, Sadeg M. Faris, Le Li
Publikováno v:
SID Symposium Digest of Technical Papers. 31:774-777
In this paper, we report on multiplexing techniques to create multicolor reflective displays formed in holographic polymer dispersed liquid crystals using a single holographic exposure through spatial color synthesis techniques. We present the electr
Publikováno v:
Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals. 331:209-216
Photopolymerization induced phase-separation of liquid crystal/polymer mixtures in holographic gratings show promise as switchable Bragg reflectors for optical communication and reflective display applications. The electro-optic properties of such Ho
Publikováno v:
Applied Physics Letters. 79:9-11
We report a holographic polymer-dispersed liquid crystal cell whose reflection peak can be tuned as a function of applied voltage. Electro-optic results are presented which are in excellent agreement with our model based on coupled wave theory.
Publikováno v:
Applied Physics Letters. 76:523-525
We report single-layer holographic polymer-dispersed liquid-crystal materials with multiple reflection and/or diffraction gratings. Three switchable gratings are observed in a single film formed in a three-beam interference pattern. Two reflection gr
Publikováno v:
Applied Physics Letters. 75:3264-3266
A significant improvement in the dynamic response time of the in-plane switching nematic liquid crystal mode, useful in flat-panel display applications, is achieved through polymer stabilization. This improvement is achieved by introducing a low-dens
Publikováno v:
Applied Physics Letters. 74:3096-3098
A holographically-formed polymer-dispersed liquid crystal is reported with two distinctive reflective states brought about by a single laser exposure of a liquid crystal-rich emulsion. The two reflective states are the result of two structurally diff
Autor:
James J. Colegrove, Jack R. Kelly, Thomas G. Fiske, Chris C. Bowley, Gongian Hu, Lou Silverstein, Gregory P. Crawford, John Gunther, Alan Lewis, Liang-Chy Chien, Haiji Yuan
Publikováno v:
Cockpit Displays VI: Displays for Defense Applications.
We have carried out experiments and simulations to optimize the materials and processes for fabricating holographicallyformed polymer dispersed liquid crystal (HPDLC) devices. Bright reflective HPDLC displays with peak reflection above60% have been a
Publikováno v:
Journal of the Society for Information Display. 7:285
— A significant improvement in the dynamic response times of IPS-mode LCDs is achieved through polymer stabilization. The improvement is a result of the introduction of a low-density stabilizing polymer network that causes the LC director to favor