Abstract
The dispersion and anisotropy of the permittivity of the liquid crystal 5CB in the solid, nematic, and isotropic phases are investigated at frequencies ranging from 50 to 1000 MHz using discretely tunable hybrid microstrip cavities. Resonance features which grow with increasing temperature are observed in the dielectric spectra. It is found that the section of the dispersion which is due to oriented vibrations of the mesophase molecules covers the frequency range almost up to 300 MHz, and the resonances found could be due to conformational vibrations of the molecules.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
P.-G. de Gennes, The Physics of Liquid Crystals, Oxford University Press, New York, 1993 [Russian translation, Mir, Moscow, 1977].
P. G. Cummins, D. A. Dunmur, and D. A. Laidler, Mol. Cryst. Liq. Cryst. 30, 109 (1975).
H. Mada and A. Nishikawa, Jpn. J. Appl. Phys., Part 2 32, Part 2, L1009 (1993).
J. M. Wacrenier, C. Druon, and D. Lippens, Mol. Phys. 43, 97 (1981).
B. A. Belyaev, N. A. Drokin, and V. N. Shepov, Zh. Tekh. Fiz. 65, 189 (1985) [Tech. Phys. 40, 216 (1995)].
I. P. Bazarov and É. V. Gevorkyan, Statistical Physics of Liquid Crystals [in Russian], Moscow State University Press, Moscow, 1992.
Author information
Authors and Affiliations
Additional information
Pis’ma Zh. Éksp. Teor. Fiz. 66, No. 4, 251–253 (25 August 1997)
Rights and permissions
About this article
Cite this article
Belyaev, B.A., Drokin, N.A., Shabanov, V.F. et al. Specific features of the dielectric spectra of the liquid crystal 5CB in the decimeter wavelength range. Jetp Lett. 66, 271–274 (1997). https://doi.org/10.1134/1.567466
Received:
Issue Date:
DOI: https://doi.org/10.1134/1.567466