Dielectric properties of ferroelectric liquid crystalline material with chiral nematic phase

• Autorzy: Wojciechowski M. , Bąk G. W. , Tykarska M.

Warianty tytułu

PL

Dielektryczne własności ferroelektrycznego ciekłego kryształu z chiralną fazą nematyczną

• Języki publikacji: EN

Abstrakty

EN

The ferroelectric liquid crystal with nematic N* phase has been investigated using broadband low frequency dielectric spectroscopy. The dielectric relaxation modes related to a ferroelectric Goldstone mode were detected only in a narrow temperature range. Well defined relaxation process was detected in the SmB* phase at about 90 Hz.

PL

Dielektryczne badania ferroelektycznego związku ciekłokrystalicznego 1H3R z nematyczną fazą chiralną przeprowadzono w obszarze niskich częstości. Procesy relaksacyjne zarejestrowano jedynie w fazie ferroelektrycznej (mode Goldstona) oraz w fazie SmB* w obszarze częstości 60÷90 Hz. Przedstawiono charakterystyki zarejestrowanych procesów relaksacyjnych.

Słowa kluczowe

EN

dielectric relaxations; ferroelectrics; Goldstone mode

PL

relaksacja dielektryczna; ferroelektryki; mod Goldstone'a

• Wydawca: Wydawnictwo Politechniki Łódzkiej
• Czasopismo: Scientific Bulletin. Physics / Lodz University of Technology
• Rocznik: 2015
• Tom: Vol. 36
• Strony: 77--86
• Opis fizyczny: Bibliogr. 16 poz., 1 rys., wykr.

Twórcy

autor

Wojciechowski M.

• Centre of Mathematics and Physics, Lodz University of Technology, Al. Politechniki 11, 90-924 Łódź, Poland
• Institute of Physics, Lodz University of Technology, ul. Wólczańska 219, 90-924 Łódź, Poland

autor

Bąk G. W.

• Institute of Physics, Lodz University of Technology, ul. Wólczańska 219, 90-924 Łódź, Poland

autor

Tykarska M.

• Institute of Chemistry, Military University of Technology, ul. Kaliskiego 2, 00-908 Warsaw, Poland

Bibliografia

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• [13] Pandey G., Dhar R., Agraval V.K., Dąbrowski R. 2006. Dielectric Spectroscopy of Ferro- and Antiferroelectric Phases of (S)-(+)-4′- (1-Methylheptyloxycarbonyl) Biphenyl-4-yl 4-(6-heptanoyloxyhex-1-oxy) Benzoate. Ferroelectrics 343: 139-149.
• [14] Pandey G., Dhar R., Dąbrowski R. 2006. Dielectric Spectroscopy of a Newly Synthesized Chlorinated Analogue of MHPOBC Antiferroelectric Liquid Crystals. Ferroelectrics 343: 83-100.
• [15] Bąk G.W., Wojciechowski M., Tykarska M. 2015. Some physical properties of liquid crystalline1H6Bi compound. J. Mol. Liq. 201: 43-49.
• [16] Mishra A., Węgłowska D., Dąbrowski R., Dhar R. 2015. Relaxation phenomena of highly tilted ferroelectric liquid crystalline material (S)-(+)-4'-(3pentanoyloxy prop-1oxy)biphenyl-4-yl-4-(methylheptyloxy)benzoates. Liq. Cryst. 42: 1543-1549.

Uwagi

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę.