Analysis of selective reflection spectrum in cholesteric liquid crystal cells for solar-ray controller

The cholesteric liquid crystal (CLC) cells are fabricated by varying the concentration of various chiral dopants and liquid crystal (LC) diacrylate monomers. The wavelength and bandwidth of selective reflection spectrum in CLC cells are measured by a spectroscopic technique. The variation of the selective reflection spectrum in CLC cells is investigated by doping the different kinds of liquid crystal (LC) diacrylate monomers which stabilize a helical twisting structure by photopolymerization. The effects of the selective reflection spectrum on the visible and infrared lights in spectral solar irradiance are explained by the performance for a solar-ray controller based on the spectral solar irradiance for air mass 1.5 and the standard luminous efficiency function for photopic vision.

[1]  Akifumi Ogiwara,et al.  Thermal control of transmittance/diffraction states of holographic structures composed of polymer and liquid crystal phases , 2010 .

[2]  Svetlana V. Serak,et al.  Polarization dependent photoactuation in azobenzene LC polymers , 2007, SPIE Organic Photonics + Electronics.

[3]  Paras N Prasad,et al.  Optically generated reconfigurable photonic structures of elastic quasiparticles in frustrated cholesteric liquid crystals. , 2012, Optics express.

[4]  Harry J. Coles,et al.  Optical Properties of Chiral Nematic Liquid Crystals , 1989 .

[5]  Tigran Galstian,et al.  Dual‐Mode Switching of Diffraction Gratings Based on Azobenzene‐ Polymer‐Stabilized Liquid Crystals , 2005 .

[6]  Kenji Mishima,et al.  Thermally bandwidth-controllable reflective polarizers from (polymer network/liquid crystal/chiral dopant) composites , 2003 .

[7]  Akifumi Ogiwara,et al.  Thermo-driven light controller by using thermal modulation of diffraction wavelength in holographic polymer dispersed liquid crystal grating , 2014, Photonics West - Optoelectronic Materials and Devices.

[8]  Mark R. Wilson,et al.  Calculating the helical twisting power of chiral dopants , 2001 .

[9]  Guan-Jhong Lin,et al.  Effects of chiral dopant on electro-optical properties of nematic liquid crystal cells under in-plane switching and non-uniform vertical electric fields , 2014 .

[10]  Liang-Chy Chien,et al.  Structure and morphology of polymer-stabilized cholesteric diffraction gratings , 2000 .

[11]  Hsin-Yuan Miao,et al.  Application of buckypaper for preserving cholesteric liquid crystal cells within a certain temperature range , 2014 .

[12]  Akifumi Ogiwara,et al.  Effects of thermal modulation on diffraction in liquid crystal composite gratings. , 2010, Applied optics.

[13]  D. S. Bradshaw,et al.  Laser optical separation of chiral molecules. , 2015, Optics letters.

[14]  Kun-Lin Yang,et al.  Polymer stabilized cholesteric liquid crystal arrays for detecting vaporous amines. , 2010, The Analyst.

[15]  Minoru Watanabe,et al.  Temperature dependence of anisotropic diffraction in holographic polymer-dispersed liquid crystal memory. , 2013, Applied optics.

[16]  Christopher Bailey,et al.  Bandwidth broadening induced by ionic interactions in polymer stabilized cholesteric liquid crystals , 2014 .

[17]  Michael J. Escuti,et al.  Simplified spectropolarimetry using reactive mesogen polarization gratings , 2006, SPIE Optics + Photonics.