Dielectric Relaxation and Viscosity of Mesogenic n-Heptylcyanobiphenyl

• Autorzy: Ginovska M. , Czechowski G. , Andonovski A. , Jadżyn J.
• Języki publikacji: EN

Abstrakty

EN

Molecular dynamics of n-heptylcyanobiphenyl (C7H15-Ph-Ph-C=N, 7CB) in the isotropic and nematic phases was studied with the use of dielectric spectroscopy. In the measuring frequency range (from 100 kHz to 100 MHz) the absorption band corresponding to the molecular rotation around the short axis dominates in the dielectric spectrum. On the basis of temperature dependences of the relaxation time and the shear viscosity of 7CB, the strength of the nematic potential and the effective length of the rotating 7CB molecule were estimated.

Słowa kluczowe

EN

dielectric relaxation; 7CB; nematic liquid crystal; viscosity

• Wydawca: Polskie Towarzystwo Chemiczne
• Czasopismo: Polish Journal of Chemistry
• Rocznik: 2001
• Tom: Vol. 75, nr 10
• Strony: 1505--1511
• Opis fizyczny: Bibliogr. 20 poz., rys.

Twórcy

autor

Ginovska M.

• University of Sts. Cyril & Methodius, Faculty of Electrical Engineering,P.O. Box 574, 91000 Skopje, Macedonia

autor

Czechowski G.

• Institute ofMolecular Physics, Polish Academy of Sciences, Smoluchowskiego 17, 60-170 Poznań, Poland

autor

Andonovski A.

• University of Sts. Cyril & Methodius, Faculty ofNatural Sciences and Mathematics, P.O. Box 157, 91000 Skopje, Macedonia

autor

Jadżyn J.

• Institute of Molecular Physics, Polish Academy of Sciences, Smoluchowskiego 17, 60-170 Poznań, Poland

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