Počet záznamů: 1

Electro-optic switching and dielectric spectroscopy studies of ferroelectric liquid crystals with low and high spontaneous polarization

  1. 1.
    0350503 - FZU-D 2011 RIV CH eng J - Článek v odborném periodiku
    Malik, P. - Raina, K.K. - Bubnov, Alexej - Choudhary, A. - Singh, R.
    Electro-optic switching and dielectric spectroscopy studies of ferroelectric liquid crystals with low and high spontaneous polarization.
    Thin Solid Films. Roč. 519, č. 3 (2010), 1052-1055 ISSN 0040-6090
    Grant CEP: GA AV ČR IAA100100911; GA AV ČR(CZ) GA202/09/0047
    Grant ostatní:RFASI(RU) 02.740.11.5166
    Výzkumný záměr: CEZ:AV0Z10100520
    Klíčová slova: spontaneous polarization * ferroelectric liquid crystal * relaxation frequency * Goldstone mode
    Kód oboru RIV: BM - Fyzika pevných látek a magnetismus
    Impakt faktor: 1.909, rok: 2010

    Electro-optic and dielectric studies have been carried out on two ferroelectric liquid crystalline materials: namely, the commercial mixture possessing low spontaneous polarization and pure material with high spontaneous polarization on cells with planar alignment. The calculated values of spontaneous polarization, response time and rotational viscosity were found ~ 240nC/cm2, 20nC/cm2, 1600μs, 500μs, 230kg/ms and 19kg/ms for high and low polarization ferroelectric liquid crystalline materials, respectively. For the ferroelectric liquid crystal with high polarization, the effect of temperature, frequency and bias field on the dielectric properties have been studied and the obtained results were compared to those obtained on the ferroelectric liquid crystalline mixture with low spontaneous polarization.
    Trvalý link: http://hdl.handle.net/11104/0190494