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Proceedings Paper

Measurements of rotational viscosity of SmC* mixtures
Author(s): Wiktor Piecek; Jolanta Rutkowska; Jerzy Kedzierski; Pawel Perkowski; Zbigniew Raszewski; Roman S. Dabrowski
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Paper Abstract

The rotational viscosity γφ has been studied for SmC* phase of ferroelectric liquid crystal mixtures containing a different amount of the same chiral dopant. Goldstone mode rotational viscosity γφ has been determined by two different methods. The first one is an electrooptical method, the second is a dielectric method using samples with unperturbed helicoidal structure. This method is based on measurements of Goldstone mode dielectric strength and relaxation frequency supplemented with values of the spontaneous polarization, the tilt angle. The rotational viscosity has been presented as a function of chiral dopant concentration and as a function of temperature. Results have been discussed in context of the dynamics of the structure under electric field.

Paper Details

Date Published: 1 February 1998
PDF: 6 pages
Proc. SPIE 3318, Liquid Crystals: Physics, Technology, and Applications, (1 February 1998); doi: 10.1117/12.299958
Show Author Affiliations
Wiktor Piecek, Military Univ. of Technology (Poland)
Jolanta Rutkowska, Military Univ. of Technology (Poland)
Jerzy Kedzierski, Military Univ. of Technology (Poland)
Pawel Perkowski, Military Univ. of Technology (Poland)
Zbigniew Raszewski, Military Univ. of Technology (Poland)
Roman S. Dabrowski, Military Univ. of Technology (Poland)


Published in SPIE Proceedings Vol. 3318:
Liquid Crystals: Physics, Technology, and Applications
Jolanta Rutkowska; Stanislaw J. Klosowicz; Jerzy Zielinski; Jozef Zmija, Editor(s)

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