TITLE

Curing temperature effects on liquid crystal gels

AUTHOR(S)
Fang Du; Shin-Tson Wu
PUB. DATE
August 2003
SOURCE
Applied Physics Letters;8/18/2003, Vol. 83 Issue 7, p1310
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The curing temperature is found to greatly affect the operating voltage, contrast ratio, hysteresis, and response time of the reversed-mode liquid crystal (LC) gels. For the gels using E48 LC host, the optimal curing temperature is around 40–50 °C. An LC gel with contrast ratio exceeds 2000:1 (at ∼2° collection angle), operating voltage lower than 7 V[sub rms], and response time of about 20 ms is demonstrated. Potential applications of such LC gels for optical switches, displays, and switchable polarizers are emphasized. © 2003 American Institute of Physics.
ACCESSION #
10543255

 

Related Articles

  • Simple method for measuring the high pretilt angle of nematic liquid crystals. Gwag, Jin Seog; Lee, Seo Hern; Park, Kyoung-Ho; Park, Won Sang; Han, Kwan-Young; Jhun, Chul Gyu; Yoon, Tae-Hoon; Kim, Jae Chang; Song, Dong-mee; Shin, Dong-myung // Journal of Applied Physics;4/15/2003, Vol. 93 Issue 8, p4936 

    Pretilt angle measurable by using the conventional crystal rotation method is limited to about 0°-20° and 700-90°. We propose a method by which we can measure the pretilt angle by using the crystal rotation method even if the pretilt angle is between 20° and 70°. In this method,...

  • Film-compensated homeotropic liquid-crystal cell for direct view display. Wu, Shin-Tson // Journal of Applied Physics;11/15/1994, Vol. 76 Issue 10, p5975 

    Focuses on a study which evaluated film-compensated homeotropic liquid-crystal cell for direct view display. Procedures for the preparation of the homeotropically aligned liquid-crystal cell; Analysis of the voltage-dependent transmission of the homeotropic cell between crossed polarizers for...

  • Thermally bandwidth-controllable reflective polarizers from (polymer network/liquid crystal/chiral dopant) composites. Yang, Huai; Mishima, Kenji; Matsuyama, Kiyoshi; Hayashi, Ken-Ichiro; Kikuchi, Hirotsugu; Kajiyama, Tisato // Applied Physics Letters;4/14/2003, Vol. 82 Issue 15, p2407 

    A (polymer network/nematic liquid crystal/chiral dopant) composite exhibiting a chiral nematic (N[sup *]) phase at room temperature has been developed. Because the helical twisting power of the chiral dopant increases with increasing temperature and the polymer network affects the molecular...

  • R & D PROJECTS.  // Japanese New Materials;2001, Vol. 1 Issue 3, p22 

    Presents information on basic and applied research relating to polarization control materials. Applications of the materials; Information on the cholesteric liquid crystal; Application of the colors of cholesteric liquid crystals to color recording.

  • PV polarizer technology lets cell phones charge themselves. Rui Zhu // Laser Focus World;Oct2011, Vol. 47 Issue 10, p11 

    The article reports that an engineering team at the University of California, Los Angeles, California (UCLA) Henry Samueli School of Engineering and Applied Science has created a polarizing organic photovoltaic (PV) layer for liquid-crystal displays (LCDs) that acts as a polarizer and a PV device.

  • Reflective twisted nematic liquid crystal displays. I. Retardation compensation. Tang, S. T.; Yu, F. H.; Chen, J.; Wong, M.; Huang, H. C.; Kwok, H. S. // Journal of Applied Physics;5/1/1997, Vol. 81 Issue 9, p5924 

    Reflective twisted nematic displays where the output polarizer is eliminated are analyzed and demonstrated. The absence of the rear output polarizer has many advantages, including much higher brightness and higher resolution. In this article, we examine the solution space for the design of such...

  • Optimized configuration for reflective bistable twisted nematic displays. Zhizhong Zhuang; Young Jin Kim; Patel, J.S. // Applied Physics Letters;8/30/1999, Vol. 75 Issue 9, p1225 

    Verifies the position of a single-polarizer reflective bistable twisted nematic (BTN) liquid-crystal display using an optimized geometry. Possibility of several optimized operating modes that can simultaneously optimize both bistable states; Evolution of the state of polarization of light...

  • Optimization of antiferroelectric liquid crystal devices at the degeneration point. Abdulhalim, I. // Journal of Applied Physics;4/15/2003, Vol. 93 Issue 8, p4930 

    Antiferroelectric liquid crystals (AFLCs) with 45° tilt angle have been shown recently [K. D'hav'e, Per Rudquist, S. T. Lagerwall, H. Pauwels, W. Drzewinski, and R. Dabrowski, Appl. Phys. Lett. 76, 3528 (2000)] to exhibit true dark state between crossed polarizers at normal incidence. We show...

  • Wide-band reflective polarizers from cholesteric polymer networks with a pitch gradient. Broer, D.J.; Lub, J. // Nature;11/30/1995, Vol. 378 Issue 6556, p467 

    Shows that by introducing a gradient in the pitch of the cholesteric helix, it is possible to obtain reflection of one of the two circularly polarized components over the entire visible liquid crystal spectrum. Use of cholesteric liquid crystals for optical filtering of polarized light;...

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics