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Proceedings Paper

Optical investigation of the Goldstone mode in free-standing films of ferroelectric smectic C* phases
Author(s): Alice Becker; Horst Stegemeyer
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Paper Abstract

A new method for investigating the dynamics in free-standing films of ferroelectric liquid crystal in the range of 5 Hz to 105 Hz by means of optical reflectivity is presented. The experimental results were obtained by applying electric AC fields up to 43 V/cm to the films. By measuring the magnitude and phase of the dynamic reflectivity, a relaxation process was found at frequencies below 1 kHz originating from the Goldstone mode. In a 73 layer film the process is still detected several degrees above the bulk phase transition temperature SC* to SA, which can be understood by a surface ordering effect.

Paper Details

Date Published: 1 February 1998
PDF: 4 pages
Proc. SPIE 3318, Liquid Crystals: Physics, Technology, and Applications, (1 February 1998); doi: 10.1117/12.299965
Show Author Affiliations
Alice Becker, Univ. of Paderborn (Germany)
Horst Stegemeyer, Univ. of Paderborn (Germany)


Published in SPIE Proceedings Vol. 3318:
Liquid Crystals: Physics, Technology, and Applications

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