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[5965] Artykuł: Hindered Reorientation of Chiral Molecules Around Their Long Axes in the Smectic C Phase of the ZLI-3654 MixtureCzasopismo: Liquid Crystals Tom: 14, Zeszyt: 4, Strony: 1069-1077ISSN: 0267-8292 Wydawca: TAYLOR & FRANCIS LTD, ONE GUNDPOWDER SQUARE, LONDON, ENGLAND EC4A 3DE Opublikowano: 1993 Autorzy / Redaktorzy / Twórcy
Grupa MNiSW: Publikacja w czasopismach wymienionych w wykazie ministra MNiSzW (część A) Punkty MNiSW: 0 Klasyfikacja Web of Science: Article; Proceedings Paper DOI Web of Science |
In this work,the high frequency dielectric relaxation process has been studied for the N*, S(A)* and S(C)* phases of the mixture ZLI 3654. To this end, time domain spectroscopy (TDS) was used to cover the frequency range from 10(7) to 10(10) Hz. The dielectric parameters obtained show that the high frequency spectrum is mostly influenced by the reorientation of molecules around their long axes. In addition, the latter process seems to be strongly hindered in the S(C)* phase, because the necessary relaxation time is of the order of 1 ns, whereas for the N* and S(A)* phases, the relaxation time is remarkably shorter and equal to 0. 3 and 0.4 ns, respectively.