The Electrooptical Properties of Doped Samples of Smectic C

Aliev, D. F.; Zeinally, A. H.; Guseinov, A. N.

doi:10.1080/01406568108072019

Molecular Crystals and Liquid Crystals

1981

DOI: 10.1080/01406568108072019

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The Electrooptical Properties of Doped Samples of Smectic C

D. F. Aliev

A. H. Zeinally

A. N. Guseinov

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1997

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“…The observations seem to be very similar to ordinary EHC in nematic cells. Aliev et al investigated cells with layers parallel to the glass plates [13] and electric fields normal to the layers. In these experiments at high field strengths, strong turbulent flow leading to a dramatic change of the smectic layer conformation was observed.…”

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confidence: 99%

Electroconvection in smectic C liquid-crystal films visualized by optical anisotropy

Becker¹,

Ried²,

Stannarius³

et al. 1997

Europhys. Lett.

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Electrohydrodynamic convection due to the Carr-Helfrich (CH) effect has been extensively investigated in nematics. It has been predicted also for freely suspended smectic C and C* films. On the other hand, in smectic A films another type of electroconvection (vortex flow) has been described (Morris S. W., De Bruyn J. R. and May A., Phys. Rev. Lett. 65 (1990) 2378) but is not sufficiently understood by theory so far. We report experiments on freestanding smectic C films in lateral AC electric fields. A convective instability bifurcating continuously from the homogeneous ground state is found. Evidently the mechanism of the instability is of a similar type as in SA. The director field in the convection vortices is directly visualized in the optical texture.

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mentioning

confidence: 99%

Electroconvection in smectic C liquid-crystal films visualized by optical anisotropy

Becker¹,

Ried²,

Stannarius³

et al. 1997

Europhys. Lett.

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The Electrohydrodynamical Transient instability region in Smectic C liquid crystals

Petrov

Simova

1984

Cryst. Res. Technol.

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The hydrodynamical instability transient region between conducting ("initial" doinnins) and dielectric ("fnndamental" domains) regimes in smectic C is investigated. TM o-dimensional domain structure and two-dimensional coherent light diffraction is observed in thr transient region. A comparison with electrohydrodynamical instability transient region in nematics is presented.Es wird der Gbergangsbercich der hydrodynamischen Instabilitiit zwischen leitenden (,,Anfangsdomlnen") und dielektrischen (,,fundamentalen" Domlnen) Regimen in smektischen Fliissigkristallen untersucht. Eine zweidimensionale 1)ominenstruktur und zweidimensionale koharente Lichtbeugung wird im Ubergangsbereich beobachtet. Es M ird ein Vergleich mit dem ubergangsbereich der elektrohydrodynamischen Instabilitiit in nematischen Fliissigkristallen angegeben.

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The Electrooptical Properties of Doped Samples of Smectic C

Cited by 2 publications

References 3 publications

Electroconvection in smectic C liquid-crystal films visualized by optical anisotropy

Electroconvection in smectic C liquid-crystal films visualized by optical anisotropy

The Electrohydrodynamical Transient instability region in Smectic C liquid crystals

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