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Warianty tytułu
Konferencja
Thw 17th Conference on Liquid Crystals : Chemistry Physics and Applications ; (17 ; 09.2007 ; Augustów, Poland)
Języki publikacji
Abstrakty
Mixture of two liquid crystalline components exhibits the antiferroelectric phase in a broad temperature range at room temperatures, though the two components separately do not show an antiferroelectric phase in a temperature range applied. The dielectric spectroscopy technique combined with measurements of the selective light reflection was used for identification and characterization of the phases and subphases existing in the mixture. In the SmC*A phase, the low frequency mode characteristic of antiferroelectric phase has been detected. In the broad temperature range between SmC*A and SmA* phases, no relaxation mode has been detected. The soft mode registered near the phase transition to SmA* phase follows the Curie-Weiss law.
Słowa kluczowe
Wydawca
Czasopismo
Rocznik
Tom
Strony
257--261
Opis fizyczny
Bibliogr. 13 poz., wykr.
Twórcy
autor
autor
autor
- Institute of Physics, Technical University of Łódź, 219 Wólczańska Str., 93-005 Łódź, Poland
Bibliografia
- 1. J.P.F. Lagerwall, P. Rudquist, S.T. Lagerwall, and F. Giesselmann, “On the phase sequence of antiferroelectric liquid crystals and its relation to orientational and translational order”, Liq. Cryst. 30, 399-414 (2003).
- 2. E. Górecka, D. Pociecha, M. Cepic, B. Zeks, and R. Dąbrowski, “Enantiometric excess dependence of the phase diagram of antiferroelectric liquid crystals”, Phys. Rev. E65, 061703 (2002).
- 3. I. Musevic, R. Blinc, and B. Zeks, The Physics of Ferroelectric and Antiferroelectric Liquid Crystals, World Scientific Publishing Co. Pte. Ltd., Singapore, 2000.
- 4. M. Buivydas, F. Gouda, S.T. Lagerwall, and B. Stebler, “The molecular aspect of double absorption peak in the dielectric spectrum of the antiferroelectric liquid crystal phase”, Liq. Cryst. 18, 879-886 (1995).
- 5. M. Buivydas, F. Gouda, G. Andersson, S.T. Lagerwall, B. Stebler, J. Bomelburg, G. Heppke, and B. Gestblom, “Collective and non-colective excitations in antiferroelectric and ferrielectic liquid crystals studied by dielectric relaxation spectroscopy and electo-optic measurements”, Liq. Cryst. 23, 723-739 (1997).
- 6. A. Fąfara, M. Marzec, S. Wróbel, R. Dąbrowski, and W. Haase, “Collective and molecular modes in ferroelectric and antiferroelectric liquid crystals”, IEEE T. Dielect. El. In. 8, 477-480 (2001).
- 7. B. Żywucki, W. Kuczyński, and J. Małecki, “Dielectric relaxation in liquid crystal phases with polar order”, Ferroelectrics 297, 91-105 (2003).
- 8. S. Merino, M.R. de la Fuente, Y. Gonzalez, M.A.P. Jubindo, B. Ros, and J.A. Puertolas, “Broadband dielectric measurements on the (R)-1-methylheptyl-6-(4’-decyloxybenzoyloxy)-2-naphtalene carboxylate antiferroelectric liquid crystal”, Phys. Rev. E54, 5169-5177 (1966).
- 9. M.B. Pandey, R. Dhar, V.K. Agrawal, R. Dąbrowski, and M. Tykarska, “Study of different modes of dielectric relaxation in newly synthesized material exhibiting ferro-, ferri- and antiferroelectric phases”, Liq. Cryst. 31, 973-987 (2004).
- 10. K. Skrzypek and M. Tykarska, “The induction of antiferroelectric phase in the bicomponent system comparising cyano compound”, Ferroelectrics 343, 177-180 (2006).
- 11. M. Wojciechowski, L.A. Gromiec, and G.W. B?k, “Dielectric characteristics of chiral smectic C subphases in liquid crystal MHPOPB”, J. Mol. Liq. 124, 7-12 (2006).
- 12. M.B. Pandey, R. Dąbrowski, and R. Dhar, “Investigation of relaxation processes in anticlinic smectic C* (SmC*A) phase of liquid crystals by dielectric spectroscopy”, Physica B387, 25-31 (2007).
- 13. S. Kundu, T. Ray, S.K. Roy, and R. Dąbrowski, “Experimental characterization of hexatic smectic phases through electro-optics studies and dielectric relaxation spectroscopy”, Liq. Cryst. 31, 119-125 (2004).
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-article-BWAK-0013-0007