Dielectric Relaxation and Viscosity of Mesogenic n-Heptylcyanobiphenyl

• Autorzy: Ginovska M.
• 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

Twórcy

autor

Ginovska M.

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