Title:	Induced smectic mesomorphism in some binary mixtures: A new type of electrohydrodynamic pattern in the nematic phase of the mixtures
Authors:	Moodithaya, K.P.L. Madhusudana, N.V.
Issue Date:	1980
Publisher:	Heyden
Citation:	Proceedings of the international liquid crystals conference, Bangalore, 1979. Ed. S Chandrasekhar. Heyden, 1980, p297-302
Abstract:	We have studied the phase diagrams of the following binary mixtures: (a) 4,4'- (a) 4,4'- (7CB) and (b) (2-hydroxyl-p-ethoxybenzylidene-pl-butylaniline (OH-EBBA) with 7CB. Though none of the pure compounds exhibits the smectic A phase, the two mixtures exhibit an 'induced' smectic A phase over certain ranges of composition. The nematic phase occurring just above the induced smectic A phase has positive dielectric anisotropy and negative conductivity anisotropy. We have observed electrohydrodynamic instabilities in these nematics. The instability patterns, seen in homeotropically aligned samples, develops with a circular symmetry at various points in the field of view and for low frequencies of the applied field goes over to the dynamic scattering state at high enough voltages.
Description:	Restricted Access.
URI:	http://hdl.handle.net/2289/3039
ISSN:	0-85501-163-7
Copyright:	1980 Heyden
Appears in Collections:	Research Papers (SCM)

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