TITLE

Mechanical tuning of holographic polymer-dispersed liquid crystal reflection gratings

AUTHOR(S)
Holmstrom, Scott A.; Natarajan, Lalgudi V.; Tondiglia, Vincent P.; Sutherland, Richard L.; Bunning, Timothy J.
PUB. DATE
September 2004
SOURCE
Applied Physics Letters;9/13/2004, Vol. 85 Issue 11, p1949
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Holographic polymer-dispersed liquid crystal reflective structures have been formed using a highly elastic photopolymer. The elasticity allows for mechanical tuning of the reflection notch by over 120 nm in the visible spectral range using compressive stress. The shift in the central position of the reflection notch is related to the strain in the system and an effective elastic modulus for the structure is obtained.
ACCESSION #
14434614

 

Related Articles

  • Electrically induced light scattering from anisotropic gels. Hikmet, R. A. M. // Journal of Applied Physics;11/1/1990, Vol. 68 Issue 9, p4406 

    Presents information on a study that produced anisotropic gels by photopolymerization of an oriented liquid-crystalline (LC) mixture containing LC diacrylates and conventional LC molecules. Characteristics of the gels produced; Application of an electric field across the gel; Dependence of the...

  • Optical microfabrication of highly reflective volume Bragg gratings. Hsiao, Vincent K. S.; Tzu-Chau Lin; He, Guang S.; Cartwright, Alexander N.; Prasad, Paras N.; Natarajan, Lalgudi V.; Tondiglia, Vincent P.; Bunning, Timothy J. // Applied Physics Letters;3/28/2005, Vol. 86 Issue 13, p131113 

    An approach for fabricating wide-bandwidth and highly reflective Bragg grating structures with the technique of holographic photopolymerization of a liquid crystal (LC) polymer composite is presented. The key to this fabrication method that distinguishes it from previous methods is the use of a...

  • Liquid-crystal diffraction gratings using polarization holography alignment techniques. Crawford, Gregory P.; Eakin, James N.; Radcliffe, Marc D.; Callan-Jones, Andrew; Pelcovits, Robert A. // Journal of Applied Physics;12/15/2005, Vol. 98 Issue 12, p123102 

    A method of patterning surfaces for liquid-crystal alignment using a polarization holography exposure on a linear photopolymerizable polymer alignment layer is demonstrated. Three configurations are demonstrated which include registered planar-periodic surface boundary conditions on both...

  • Quiescent and flow-induced transitional behavior of hydroxypropylcellulose solutions. Grizzuti, Nino; Maffettone, Pier Luca // Journal of Chemical Physics;3/15/2003, Vol. 118 Issue 11, p5195 

    The flow-induced transition of liquid crystalline polymers (LCPs) is studied by rheological techniques. Aqueous solutions of hydroxypropylcellulose (HPC) in water are adopted as a model LCP system. Nonisothermal oscillatory tests are first used to quantitatively determine the "rheological" phase...

  • Electro-rheological effects of liquid crystalline polymer on one-sided pattern electrodes. Takesue, Naoyuki; Furusho, Junji; Inoue, Akio // Journal of Applied Physics;2/1/2002, Vol. 91 Issue 3, p1618 

    In most industrial robots, serious problems of vibratory behavior are caused because of elasticity in the drive systems. An electro-rheological (ER) fluid is a substance that can change its apparent viscosity by the application of an electric field, and homogeneous ER fluids are effective in...

  • Fabrication of a simultaneous red–green–blue reflector using single-pitched cholesteric liquid crystals. Na Young Ha; Ohtsuka, Youko; Soon Moon Jeong; Nishimura, Suzushi; Suzaki, Goroh; Takanishi, Yoichi; Ishikawa, Ken; Takezoe, Hideo // Nature Materials;Jan2008, Vol. 7 Issue 1, p43 

    A cholesteric liquid crystal (CLC) is a self-assembled photonic crystal formed by rodlike molecules, including chiral molecules, that arrange themselves in a helical fashion. The CLC has a single photonic bandgap and an associated one-colour reflection band for circularly polarized light with...

  • Surface anchoring effects on spectral broadening of cholesteric liquid crystal films. Fan, B.; Vartak, S.; Eakin, J. N.; Faris, S. M. // Journal of Applied Physics;Jul2008, Vol. 104 Issue 2, p023108 

    This paper describes the spectral broadening of cholesteric liquid crystal film prepared from a blend comprising a cross-linkable liquid crystal polymer and a non-cross-linkable low-molecular-weight liquid crystal. The spectral broadening arises from the formation of gradient pitch across the...

  • Twisted liquid crystal pi cell stabilized by polymer-sustained alignment. Chen, Tien-Jung; Cheng, Yuan-Hsin; Wu, Sheng-Ming // Applied Physics Letters;12/1/2008, Vol. 93 Issue 22, p221103 

    A uniform π-twist liquid crystal (LC) alignment was stabilized in a pi cell by photopolymerization of a minute amount of monomers without using any chiral material. Controlling UV exposure time can vary the LC pretilt angle to achieve a stabilized π-twist state. This type of...

  • Nonlocal photopolymerization effect in the formation of reflective holographic polymer-dispersed liquid crystals. Jun Qi; Liuliu Li; De Sarkar, Mousumi; Crawford, Gregory P. // Journal of Applied Physics;9/1/2004, Vol. 96 Issue 5, p2443 

    The optical performance of reflective holographic polymer-dispersed liquid crystals (H-PDLCs) is investigated as a function of sample thickness and laser exposure intensity, and, the data are analyzed in terms of a nonlocal photopolymerization model. The intensity of laser exposure is proven to...

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