Electroconvection in a homeotropic nematic under the influence of a magnetic field.

H. Richter, N. Klöpper, A. Hertrich, A. Buka

Research output: Contribution to journalArticle

52 Citations (Scopus)

Abstract

A homeotropically aligned nematic (MBBA) with negative dielectric anisotropy subjected to electric and magnetic fields has been investigated. If an electric field perpendicular to the nematic layer is applied, first the Freedericksz transition takes place spontaneously breaking the rotational symmetry and subsequently the electrohydrodynamic instability (EHC) sets in. An additional magnetic field in the plane of the layer induces a preferred director orientation. The effects of the magnetic field on the EHC threshold voltage, on the critical wave vector and on the roll angle are examined as a function of the applied frequency. The data are compared with theoretical results. Furthermore, accompanying domain walls are characterized.

Original languageEnglish
Pages (from-to)37-42
Number of pages6
JournalEPL
Volume30
Issue number1
DOIs
Publication statusPublished - Apr 1 1995

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electrohydrodynamics
magnetic fields
electric fields
threshold voltage
domain wall
anisotropy
symmetry

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Electroconvection in a homeotropic nematic under the influence of a magnetic field. / Richter, H.; Klöpper, N.; Hertrich, A.; Buka, A.

In: EPL, Vol. 30, No. 1, 01.04.1995, p. 37-42.

Research output: Contribution to journalArticle

Richter, H. ; Klöpper, N. ; Hertrich, A. ; Buka, A. / Electroconvection in a homeotropic nematic under the influence of a magnetic field. In: EPL. 1995 ; Vol. 30, No. 1. pp. 37-42.
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