Biaxial Nematic Liquid Crystals: Theory, Simulation and by Geoffrey R. Luckhurst, Timothy J. Sluckin

By Geoffrey R. Luckhurst, Timothy J. Sluckin

Liquid Crystals are a nation of subject that experience homes among these of traditional liquid and people of an outstanding crystal. Thermotropic liquid crystals react to adjustments in temperature or, in certain cases, strain. The response of lyotropic liquid crystals, that are utilized in the manufacture of soaps and detergents, is dependent upon the kind of solvent they're combined with. because the unintended discovery of the chiral nematic (ordered) part in 1888 many liquid crystal levels were came across, occasionally by accident and infrequently by means of layout. The life of 1 such section was once anticipated by means of Freiser in 1970, this was once the biaxial nematic part which has biaxial symmetry not like that of the ever-present nematic section which ix uniaxial. The biaxial symmetry of the anticipated part confers on it an extra layer of interesting complexity. This publication is dedicated to the biaxial nematic part, either lyotropic and thermotropic, shaped by way of low molar mass in addition to polymeric structures. It brings jointly thought, simulations and experimental reports. The booklet opens with a common advent to the biaxial nematic part, whereas chapters 2-7 speak about present theories and predictions. Chapters eight and nine record on alignment and purposes, whereas chapters 10.1 -10.5 aspect characterization with the aim of unambiguous id. ultimate chapters (11-14) hide Lyotropic, Colloidal, Thermotropic and coffee Molar Mass Thermotropic structures respectively.

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A Monte Carlo study of biaxial Gay-Berne particles. J. Chem. , 113, 5971–5979 (2000). [44] Saupe, A. Elastic and flow properties of biaxial nematics. J. Chem. , 75, 5118–5124 (1981). , and Pleiner, H. Hydrodynamics of biaxial discotics. Phys. Rev. A, 24, 2777–2787 (1981). [46] Liu, M. Hydrodynamic theory of biaxial nematics. Phys. Rev. A, 24, 2720–2726 (1981). , and Pleiner, H. Theory of flow alignment in biaxial nematics and nematic discotics. J. Phys. (Paris), 43, 853–858 (1982). , and Pleiner, H.

Maybe this is why the biaxial nematic phases seem so uncommonly rare. So now we can pose the additional question in a more precise way. What extra molecular features are required to prevent other phases from intervening to destabilise the biaxial nematic? The first question is the easier to answer. Computer simulation has yielded enormous insight into the properties of the uniaxial nematic phase. In fact, if one wants to concentrate on the explicitly orientational properties, a sufficient strategy is to stick to a model in which the anisotropic particles are confined to a lattice.

And Gelbart, W. M. Phase diagram behaviors for rod/plate liquid crystal mixtures. Mol. Cryst. Liq. , 89, 67–76 (1982). , and Lekkerkerker, H. N. W. Liquid crystal phase transitions in a solution of rodlike and disklike particles. J. Phys. , 88, 3669–3674 (1984). [61] Chen, Z. , and Deutch, J. M. Biaxial nematic phase, multiphase critical point, and reentry transitions in binary liquid crystal mixtures. J. Chem. , 80, 2151–2162 (1984). 22 [62] Biaxial Nematic Liquid Crystals Sharma, S. , and Dunmur, D.

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