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Original Articles

The Effect of Magnetic Field on Electrohydrodynamic Instability Threshold in Liquid Crystals

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Pages 219-222 | Received 23 Jul 1980, Published online: 14 Oct 2011
 

Abstract

In this paper we continue investigations started in Refs. 1 and 2 studying the effect of a magnetic field on electrohydrodynamics of liquid crystalling complex ethers with dielectric constant anisotropy close to zero. The investigations were made with 100 μm thick layers having initial planar “first” structure of B and C mixtures described in Ref. 2.

Figure 1 shows dependences of optical layer transmittance on the intensity of the magnetic field (H) directed normal to bearing surfaces, and in the absence of an electric field in the absence of an electric field (curves I and II). For some threshold values H = Hth all the samples showed an increased transmission arising due to Fredericks transition.3

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