Polymer/liquid crystal composite film

Malik MK, Deshmukh RR (2014) Electro-optics of homogeneously aligned nematic liquid crystals stabilized by a polymer network. Int J ChemTech Res 6 1833-1835 Manohar R, Tripathi G, Singh AK, Srivastava AK, Shukla JP, Prajapati AK (2006) Dielectric and optical properties of polymer-liquid crystal composite. J Phys Chem Solids 67 2300-2304 Mei E, Higgins DA (1998) Polymer-dispersed liquid crystal films studied by near-field scanning optical microscopy. Langmuir 14 1945-1950... [Pg.194]

Parab SS, Malik MK, Dabrowski R, Deshmukh RR (2013) Thermodynamic and bias field characterization of quickly operating antiferroelectric liquid crystal. J Mol Liq 183 20-25 Parab SS, Malik MK, Deshmukh RR (2014a) Investigation of dielectric properties of poly(methyl methacrylate)-E7 composite films. Int J ChemTech Res 6 1836-1839 Parab SS, Malik MK, Bhatia PG, Deshmukh RR (2014b) Investigation of liquid crystal dispersion and dielectric relaxation behavior in polymer dispersed liquid crystal composite films. J Mol Liq 199 287-293... [Pg.194]

Banded texture is generally observed in relaxed polymer liquid crystal solutions or melts after shearing or annealing of the melts of the thermotropic polymer liquid crystal. For the cholesteric liquid crystalline phase of cellulose derivatives in crosslinkable solvents, the banded texture can be fixed by crosslinking. When polymerizable solvents were used for the preparation of cholesteric liquid crystalline composites films, the... [Pg.379]

In this composite film, the polymer structure must not disturb the liquid crystal alignment. That is, it needs to maintain the highly ordered liquid crystal alignment (that is indispensable for the high-contrast light modulation) in the dispersion structure of the polymer. Therefore, the composite film preparation uses the phase separation of polymer and liquid crystal materials with molecular alignment, as described below. [Pg.213]

A liquid crystal composite approach was used to provide a distributed interface to vertically separate D and A films in an OPV device [39, 47]. The concept is illustrated in Fig. 8.9. A nematic polymer network with a porous surface with sub-micron scaled grooves and electron-donating properties was prepared by pho-topolymerising a thin film containing a blend of the reactive mesogen, FTl, which has a fiuorene-thiophene structure, and a non-polymerisable analogue, compound FT2. Photopolymerisation leads to phase separation of the polymerised and the non-polymerised materials, the latter of which is removed by washing in a suitable solvent [39]. The chemical structures of the nematic materials discussed here are... [Pg.233]

We are currently initiating three research projects that include (1) the synthesis of reflective liquid crystal/polymer composite films, (2) a study of microphase separation in hyperbranched block copolymers, and (3) the design and synthesis of polar organic thin films, which is the subject of this proposal. (47 words aim for 41 words)... [Pg.430]

K. Kimura, T. Suzuki, and M. Yokoyama, Photoresistive ionic conductivity of polymer composite films containing azobenzene liquid crystal, J. Phys. Chem. 94, 6090-6093... [Pg.64]

With liquid crystal metal phthalocyanine compounds as mass sensors, the LSER approach has proven useful. Analyte uptake has been measured using QCM methods, and adsorption of volatile organic compounds (VOCs) into the liquid crystalline coating appears to follow similar trends as for organic polymer film sensors. It should be noted that the analytes examined (toluene, chloroform, carbon tetrachloride, benzene, hexane, and methanol) are volatile compounds that are very weak ligands toward metals [167], Thus, the composite sensor response for metal phthalocyanine sensors based on conductivity is a complex property that depends on analyte redox properties, basicity, and sensor crystallinity. [Pg.103]

New photoresponsive polymers and peptides have been developed by incorporation of an azobenzene chromophore. The photochemistry of azobenzene-containing polymers has been reviewed,and the ion-conducting polymer composite film of poly(vinyl chloride)/the azobenzene liquid crystal (4)/lithium perchlorate is a promising material for use in photoinduced image storage.Photoisomerization has also been demonstrated... [Pg.331]

Morino S, Kaiho A, Ichimura K. 1998. Photogeneration and modification of birefringence in crosslinked films of liquid crystal/polymer composites. Appl Phys Lett 73(10) 1317 1319. [Pg.39]

Passivation of the surface of n-GaAs is possible with thin films of plasma-polymerized thiophene [837]. A composition containing an electrically nonconductive polymer matrix and POT can also be used in paraboloid antennas, reflectors for radar, heating systems, photoelectric devices, and electric circuits and apparatus [779]. PTs are used for manufacturing a nonlinear two-terminal device. This deviee is not asymmetrical, gives stable electrical characteristics, and is useful as a display device [838, 839], Liquid crystal display devices contain an electrically conductive polymer, e.g., PT or POT as oriented film [840-842]. PTs are also used for the production of color filters for liquid crystal displays [843]. [Pg.124]

Polymer dispersed liquid crystals (PDLCs) are a relatively new class of composite materials consisting of micrometric liquid crystalline droplets dispersed into a polymer matrix (Bronnikov et al. 2013). Thus, they combine the unique optical properties of liquid crystals (LCs) with the film-forming ability and mechanical properties of a polymer matrix—resulting in appropriate materials for a large variety of fiexible opto-electronic applications (Bouteiller et al. 1996 Bronnikov et al. 2013 Dierking 2000 Drzaic 2006 Kitzerow 1994 Smith 1993). As evidenced by... [Pg.119]

Lin Yi-Hsin, Chu Ting-Yu, Tsou Yu-Shih, et al. An electrically switchable surface free energy on a liquid crystal and polymer composite film. Appl. Phys. Lett. 101 no. 23 (2012) 233502 1-4. [Pg.136]

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