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Phase behaviour and birefringence studies of a liquid crystal binary mixture

Biomedical Sciences Research Institute Computer Science Research Institute Environmental Sciences Research Institute Nanotechnology & Advanced Materials Research Institute

Mitra, M, Roy, SS, Majumder, TP and Roy, SK (1997) Phase behaviour and birefringence studies of a liquid crystal binary mixture. MOLECULAR CRYSTALS AND LIQUID CRYSTALS SCIENCE AND TECHNOLOGY SECTION A-MOLECULAR CRYSTALS AND LIQUID CRYSTALS, 301 . pp. 363-369. [Journal article]

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Abstract

The phase diagram of binary system of 4-n-pentyl 4'-cyanobiphenyl (5CB) and 4-pentyl phenyl trans-4 pentyl cyclohexane carboxylate (D55) is presented, which shows the presence of an injected smectic-A phase and a higher order smectic phase (SmG). Refractive indices (n(o),n(e)) and densities for different compositions of this mixture and for one pure compound (D55) are measured. The orientational order parameters <P-2> are determined from the polarizability values (alpha(o),alpha(e)) which are calculated using both Vuks' as well as Neugebauer's internal held models. The experimental order parameter values for the samples having smectic A phase have been compared with McMillan's theory and with Maier-Saupe theory for the nematic cases.

Item Type:Journal article
Faculties and Schools:Faculty of Computing & Engineering
Faculty of Computing & Engineering > School of Engineering
Research Institutes and Groups:Engineering Research Institute
Engineering Research Institute > Nanotechnology & Integrated BioEngineering Centre (NIBEC)
ID Code:14093
Deposited By:Dr Susanta Sinha Roy
Deposited On:07 Jun 2010 15:24
Last Modified:18 Aug 2011 12:03

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