Search academic texts

Information × Registration Number 0207U008712, 0105U000973 , R & D reports Title Photorefractive, electro- and magnetoopticalal properties, structure and phase transitions of nanocomposites consisting of liquid crystals and organic and inorganic fillers. popup.stage_title Head Puchkovska G.A., Registration Date 19-12-2007 Organization Institute of physics NASU popup.description2 The method that allows producing stable ferroelectric suspension in nematic liquid crystals (NLC) was developed. Adding of low-concentrated ferroelectric nano-particles to NLC lead to essential change of basic properties of nematic: to increasing of dielectric anisotropy; of birefringence; temperature of transition to isotropic phase; elastic constants. It was showed that adding of anisotropic particles of organoclay changes the temperature of LC phase transition from nematic to isotropic state. It was showed that adding of TiO2 nano-particles to NLC changes system dielectric properties: decreasing value of dielectric permittivity and relaxation time of LC molecules comparing with pure one. It was studied photoluminescence of LC confined in porous glasses. It was showed that: porous glasses characterized own luminescence similar to porous silicon; the main mechanism of LC photo-transformation in pores was different from trans-cis isomerization that dominated in bulk; it was proved that in pores the conditions for J-aggregates formation were established.5635 Product Description popup.authors popup.nrat_date 2020-04-02 Close