PMID: 11909078Mar 23, 2002Paper

Photopyroelectric ac calorimetric study of the nematic-smectic-A phase-transition line in binary liquid crystal mixtures with injected smectic-A phases

Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics
J CaerelsJ Thoen

Abstract

Using a recently developed photopyroelectric ac calorimetric technique we investigate two binary liquid crystal mixtures with so-called injected smectic-A phases. Characteristic of these systems is the occurrence of nematic-to-smectic-A transition lines in the phase diagram of mixtures of pure compounds having only a nematic phase. The two binary systems are pentylcyanobiphenyl with either 4-n-propylcyclohexyl-carboxylate or 4-n-pentylphenyl 4(')-n-pentyloxybenzoate. Both these systems have domelike smectic-A ranges with narrow nematic ranges at the top. Near the top the N-SmA transitions are of first order and are crossing over to second order at a tricritical point on either side of the top with the increasing width of the nematic range. The obtained critical exponents are almost completely Fisher renormalized because of the strong concentration dependence of the nematic-to-smectic-A transition temperatures.

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Citations

Jul 16, 2004·The European Physical Journal. E, Soft Matter·S Kralj, V Popa-Nita
Jan 15, 2011·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·P SathyanarayanaS Dhara
Jul 30, 2011·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·Y SasakiB K Sadashiva
Oct 4, 2003·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·Zdravko KutnjakSlobodan Zumer
Sep 28, 2010·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·Y SasakiB K Sadashiva

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