Collective dynamic modes of microconfined ferroelectric liquid crystals

Author

Rozanski, S.A. ; Stannarius, R. ; Kremer, F.

Author_Institution

Inst. of Exp. Phys. 1, Leipzig Univ., Germany

Volume

8

Issue

3

fYear

2001

fDate

6/1/2001 12:00:00 AM

Firstpage

488

Lastpage

493

Abstract

The dielectric properties of the ferroelectric liquid crystal 4-oetyloxy-4-(2-methylbutyloxy)carbonyl-phenylbenzoate in different confinements have been investigated. While the molecular dynamic processes are not influenced by the micro-porous confinement, the collective relaxation processes are strongly affected by restricted geometry. Changes of shape, dispersion and frequency of the relaxation processes caused by confinement were observed. The Goldstone mode present in the bulk ferroelectric liquid crystal is not observed in the porous materials. The reason for the disappearance of the Goldstone mode depends on the structure, pore size and surface interactions in confinement

Keywords

dielectric relaxation; ferroelectric liquid crystals; organic compounds; permittivity; porous materials; 4-oetyloxy-4-(2-methylbutyloxy)carbonyl-phenylbenzoate; Goldstone mode; collective dynamic modes; collective relaxation processes; dielectric properties; dispersion; micro-porous confinement; microconfined ferroelectric liquid crystals; molecular dynamic processes; pore size; porous materials; relaxation processes; restricted geometry; surface interactions; Biomembranes; Dielectric liquids; Electrochemical impedance spectroscopy; Ferroelectric materials; Filters; Frequency; Geometry; Liquid crystals; Magnetic confinement; Physics;

fLanguage

English

Journal_Title

Dielectrics and Electrical Insulation, IEEE Transactions on

Publisher

ieee

ISSN

1070-9878

Type

jour

DOI

10.1109/94.933371

Filename

933371