scholarly journals Effect of a Dual Functional Polymer on the Electro-Optical Properties of Blue Phase Liquid Crystals

Polymers ◽  
2019 ◽  
Vol 11 (7) ◽  
pp. 1128 ◽  
Author(s):  
Liang Gao ◽  
Ke-Meng Wang ◽  
Rui Zhao ◽  
Hong-Mei Ma ◽  
Yu-Bao Sun
Keyword(s):  
Optical Properties ◽  
Liquid Crystals ◽  
Polymer Systems ◽  
Rigid Polymer ◽  
Dual Functional ◽  
Phase Liquid ◽  
Blue Phase ◽  
Anchoring Energy ◽  
Soft Polymer ◽  
Polymer Stabilized

The effects of the fluorinated monomer with an ethynyl group on the electro-optical properties of polymer-stabilized blue phase liquid crystals (PSBPLCs) were investigated in different polymer systems. In rigid polymer systems, the Kerr constant can be increased by about 27.6%, while keeping a microsecond response time. In soft polymer systems, hysteresis decreased by about 45.5% and residual birefringence can be reduced from 1.85% to 0.6%. The above phenomena exhibited dual functions of affecting the anchoring energy and the viscosity of the system simultaneously. The results provide a potential value for the ethynyl-containing monomers in PSBPLC systems.

P‐148: Chiral Polymer Network of Polymer‐stabilized Blue Phase Liquid Crystals

2019 ◽  
Vol 50 (1) ◽  
pp. 1788-1791
Author(s):  
Yifan Feng ◽  
Changli Sun ◽  
Shenghao Zha ◽  
Jiangang Lu
Keyword(s):  
Liquid Crystals ◽  
Polymer Network ◽  
Phase Liquid ◽  
Blue Phase ◽  
Polymer Stabilized ◽  
Chiral Polymer

Near infrared Kerr effect and description of field-induced phase transitions in polymer-stabilized blue phase liquid crystals

2016 ◽  
Vol 108 (8) ◽  
pp. 081107
Author(s):  
B. Atorf ◽  
H. Rasouli ◽  
G. Nordendorf ◽  
D. Wilkes ◽  
H. Kitzerow
Keyword(s):  
Phase Transitions ◽  
Liquid Crystals ◽  
Kerr Effect ◽  
Near Infrared ◽  
Phase Liquid ◽  
Blue Phase ◽  
Polymer Stabilized

22.1:Invited Paper: Low-Voltage Polymer-Stabilized Blue-Phase Liquid Crystals

2013 ◽  
Vol 44 (1) ◽  
pp. 254-257 ◽  
Author(s):  
Yasuhiro Haseba ◽  
Shin-ichi Yamamoto ◽  
Kohki Sago ◽  
Akihiro Takata ◽  
Hitoshi Tobata
Keyword(s):  
Liquid Crystals ◽  
Low Voltage ◽  
Phase Liquid ◽  
Blue Phase ◽  
Polymer Stabilized

Polarizer-free and fast response microlens arrays using polymer-stabilized blue phase liquid crystals

2010 ◽  
Vol 96 (11) ◽  
pp. 113505 ◽  
Author(s):  
Yi-Hsin Lin ◽  
Hung-Shan Chen ◽  
Hung-Chun Lin ◽  
Yu-Shih Tsou ◽  
Hsu-Kuan Hsu ◽  
...  
Keyword(s):  
Liquid Crystals ◽  
Fast Response ◽  
Microlens Arrays ◽  
Phase Liquid ◽  
Blue Phase ◽  
Polymer Stabilized

scholarly journals The influence of orienting layers on blue phase liquid crystals in rectangular geometries

2018 ◽  
Vol 10 (4) ◽  
pp. 100 ◽  
Author(s):  
Marzena Maria Sala-Tefelska ◽  
Kamil Orzechowski ◽  
Filip A. Sala ◽  
Tomasz R. Woliński ◽  
Olga Strzeżysz ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Liquid Crystals ◽  
Electric Field ◽  
Low Voltage ◽  
Bragg Reflection ◽  
Phase Liquid ◽  
Blue Phase ◽  
Blue Phases ◽  
Alignment Layers ◽  
Polymer Stabilized

In this paper, the influence of homeotropic and homogeneous orienting layers is presented in a cell filled with chiral nematic liquid crystals stabilized in a blue phase. The change of selective Bragg reflection from red to blue light was observed for homogeneous layers in rectangular geometries. The growth of blue phase crystals domains in a glass cell as well an influence of temperature and the electric field on such a structure, are also presented. Full Text: PDF ReferencesF. Reinitzer, Beitrage zur Kenntniss des Cholestherins, Monatsh Chem. 9, 421-441, (1888). CrossRef J. Yan, M. Jiao, L. Rao, and S.-T. Wu, "Direct measurement of electric-field-induced birefringence in a polymer-stabilized blue-phase liquid crystal composite", Opt. Express 18, 11450-11455 (2010) CrossRef Y. Chen, D. Xu, S.-T. Wu, S.-i. Yamamoto, Y. Haseba, "A low voltage and submillisecond-response polymer-stabilized blue phase liquid crystal", Appl. Phys. Lett. 102, 141116 (2013) CrossRef Y. Huang, H. Chen, G. Tan, H. Tobata, S. Yamamoto, E. Okabe, Y.-F. Lan, C.-Y. Tsai, and S.-T. Wu, "Optimized blue-phase liquid crystal for field-sequential-color displays", Opt. Mater. Express 7, 641-650 (2017) CrossRef V. Sridurai, M. Mathews, C. V. Yelamaggad, G. G. Nair, "Electrically Tunable Soft Photonic Gel Formed by Blue Phase Liquid Crystal for Switchable Color-Reflecting Mirror", ACS Appl. Mater. Interfaces, 9 (45), 39569-39575 (2017) CrossRef E. Oton, E. Netter, T. Nakano, Y. D.-Katayama, F. Inoue, "Monodomain Blue Phase Liquid Crystal Layers for Phase Modulation", Sci. Rep. vol.7, 44575 (2017) CrossRef Q. Liu, D. Luo, X. Zhang, S. Li, Z. Tian, "Refractive index and absorption coefficient of blue phase liquid crystal in terahertz band", Liq. Cryst., Vol. 44, No. 2, pp. 348-354 (2017) CrossRef Y. Li, Y. Liu, Q. Li, S.-T. Wu, "Polarization independent blue-phase liquid crystal cylindrical lens with a resistive film", Appl. Opt., Vol. 51, No. 14, pp. 2568-2572 (2012) CrossRef M. M. Sala-Tefelska, K. Orzechowski M. Sierakowski, A. Siarkowska, T.R. Woliński, O. Strzeżysz, P. Kula, "Influence of cylindrical geometry and alignment layers on the growth process and selective reflection of blue phase domains", Opt. Mater. 75, 211-215, (2018) CrossRef H. Claus, O. Willekens, O. Chojnowska, R. Dąbrowski, J. Beeckman, K. Neyts, "Inducing monodomain blue phase liquid crystals by long-lasting voltage application during temperature variation", Liq. Cryst. 43 (5), 688-693, (2016) CrossRef M. Takahashi, T. Ohkawa, H. Yoshida, J. Fukuda, H. Kikuchi, M. Ozaki, "Orientation of liquid crystalline blue phases on unidirectionally orienting surfaces", J. Phys. D: Appl. Phys. 51 (10), 104003 (2018) CrossRef P. Joshi, X. Shang, J. De Smet, E. Islamai, D. Cuypers, G. Van Steenberge, S. Van Vlierberghe, P. Dubruel, H. De Smet, "On the effect of alignment layers on blue phase liquid crystals", Appl. Phys. Lett. 106, 101105 (2015) CrossRef K. Orzechowski, M.W. Sierakowski, M. Sala-Tefelska, P. Joshi, T.R. Woliński, H.D. Smet, "Polarization properties of cubic blue phases of a cholesteric liquid crystal", Opt. Mater. 69, 259-264 (2017) CrossRef P.-J. Chen, M. Chen, S.-Y. Ni, H.-S. Chen, Y.-H. Lin, "Influence of alignment layers on crystal growth of polymer-stabilized blue phase liquid crystals", pt. Mater. Express 6, 1003-1010 (2016) CrossRef CrossRef

scholarly journals Theoretical approach of a polymer stabilized blue phase beam steering

2017 ◽  
Vol 9 (1) ◽  
pp. 14
Author(s):  
Jose Francisco Algorri ◽  
Virginia Urruchi ◽  
Noureddine Bennis ◽  
Jose Manuel Sanchez-Pena
Keyword(s):  
Liquid Crystal ◽  
Liquid Crystals ◽  
Response Time ◽  
Deflection Angle ◽  
Beam Steering ◽  
Phase Plate ◽  
First Case ◽  
Phase Liquid ◽  
Blue Phase ◽  
Polymer Stabilized

Nematic liquid crystal (LC)-based beam steering has been reported for wide applications. However, for conventional nematic LC beam steering the thickness is of several microns in order to have a wider deflection angle. The response time is relatively slow and the diffraction efficiency is low. In this work, novel beam steering based on polymer stabilized blue phase liquid crystal (PS-BPLC) has been designed and theoretically analyzed. This special mesophase of the chiral doped nematic LC has several advantageous characteristics, for example no need for alignment layers, microsecond response time and an isotropic voltage-off state. The results reveal control over phase retardation. The direction of the steered beam can be tuned by voltage. Depending on voltage configuration, either diffractive beam steering (0.5deg deviation for 1st order) or a tunable continuous phase (tunable deviation of 0.002deg) can be obtained. In the first case, the deflection angle could be tuned by stacks of samples. The second option has the same phase shift for the TE and TM modes so unpolarized light could be used. Full Text: PDF ReferencesF. Feng, I. White, T. Wilkinson, "Free Space Communications With Beam Steering a Two-Electrode Tapered Laser Diode Using Liquid-Crystal SLM", J. Lightwave Technol. 31, 2001 (2013). CrossRef E. Oton, J. Perez-Fernandez, D. Lopez-Molina, X. Quintana, J.M. Oton, M.A. Geday, "Reliability of Liquid Crystals in Space Photonics", IEEE Photonics Journal 7, 1 (2015). CrossRef J. Stockley, S. Serati, "Multi-access laser terminal using liquid crystal beam steering", IEEE in Aerospace Conference, 1972 (2005). CrossRef D. Zografopoulos and E. Kriezis, "Switchable beam steering with zenithal bistable liquid-crystal blazed gratings", Opt. Lett. 39, 5842 (2014). CrossRef Benedikt Scherger, et al., "Discrete Terahertz Beam Steering with an Electrically Controlled Liquid Crystal Device", J. Infrared. Millim. Terahertz Waves 33, 1117 (2012). CrossRef M.A. Geday, X. Quintana, E. Otón, B. Cerrolaza, D. Lopez, F. Garcia de Quiro, I. Manolis, A. Short, Proc. ICSO, Rhodes, Greece, pp. 1-4 (2010). CrossRef Y. Chen, S.-T. Wu, "The outlook for blue-phase LCDs", Proc. SPIE 9005, Advances in Display Technologies IV, 900508 (2014). CrossRef G.D. Love, A.F. Naumov, "Modal liquid crystal lenses", Liq. Cryst. Today 10, 1 (2000). CrossRef V. Urruchi, J.F. Algorri, J.M. Sánchez-Pena, M.A. Geday, X. Quintana, N. Bennis, "Lenticular Arrays Based on Liquid Crystals", Opto-Electron. Rev. 20, 38 (2012). CrossRef J.F. Algorri, G. Love, and V. Urruchi, "Modal liquid crystal array of optical elements", Opt. Express 21, 24809 (2013). CrossRef J.F. Algorri, V. Urruchi, N. Bennis, J. Sánchez-Pena, "Modal liquid crystal microaxicon array", Opt. Lett. 39, 3476 (2014). CrossRef J.F. Algorri, V. Urruchi, B. Garcia-Camara, J.M. Sánchez-Pena, "Generation of Optical Vortices by an Ideal Liquid Crystal Spiral Phase Plate", IEEE Elect. Dev. Lett. 35, 856 (2014). CrossRef D. Xu, Y. Chen, Y. Liu, S. Wu, "Refraction effect in an in-plane-switching blue phase liquid crystal cell", Opt. Express 21, 24721 (2013). CrossRef Z. Ge, S. Gauza, M. Jiao, H. Xianyu, S.T. Wu, "Electro-optics of polymer-stabilized blue phase liquid crystal displays", Appl. Phys. Lett. 94 101104 (2009). CrossRef J. Yan et al., "Extended Kerr effect of polymer-stabilized blue-phase liquid crystals", Appl. Phys. Lett. 96, 071105 (2010). CrossRef X. Wang, D. Wilson, R. Muller, P. Maker, D. Psaltis, "Liquid-crystal blazed-grating beam deflector, Appl. Opt. 39, 6545 (2000). CrossRef

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