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  • Title: Appearance of a liquid crystalline nematic-isotropic critical point in a mixture system of rod- and bent-shaped molecules.
    Author: Takekoshi K, Ema K, Yao H, Takanishi Y, Watanabe J, Takezoe H.
    Journal: Phys Rev Lett; 2006 Nov 10; 97(19):197801. PubMed ID: 17155658.
    Abstract:
    Heat capacity measurements have been made on a liquid-crystal mixture system formed from bent-shaped molecule 1,3-phenylene bis[4-(4-8-alkoxyphenyliminomethyl)benzoates] (P-8-O-PIMB) and rod-shaped molecule n-pentyl-cyanobiphenyl (5CB). The obtained results can be understood assuming that the addition of P-8-O-PIMB molecules to the 5CB system affects as a field conjugate to the nematic order parameter. The B(X)-B(4) transition can be viewed as the nematic-isotropic transition of 5CB, which is embedded in a framework of the B(4) structure of P-8-O-PIMB molecules. The present mixture system offers a rare example of the nematic-isotropic critical point, whose critical behavior has not been studied yet in detail.
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