Ferroelectric nematic liquid-crystal phases of dipolar hard ellipsoids
نویسندگان
چکیده
منابع مشابه
The isotropic to nematic liquid crystal transition for hard ellipsoids: an Onsager-like theory and computer simulations
The phase transition from an isotropic to a nematic phase for a classical uid of hard ellipsoids has been studied using a version of a theory originally due to Onsager and by computer simulation. In the proposed form of the Onsager theory for the Helmholtz free energy, both the second and the third virial coeecients are treated exactly, but the fourth and higher virials are resummed in a manner...
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The density and polarization profiles of the dipolar hard ellipsoids confined between hard walls are studied using the density functional theory (DFT). The Hyper-Netted Chain (HNC) approximation is used to write excess grand potential of the system with respect to the bulk value. The number density is expanded up to zero and first order in polarization to find the results. For the zero order in...
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This article provides a concise review of a new state of colloidal matter called nematic liquid-crystal colloids. These colloids are obtained by dispersing microparticles of different shapes in a nematic liquid crystal that acts as a solvent for the dispersed particles. The microparticles induce a local deformation of the liquid crystal, which then generates topological defects and long-range f...
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In a recent letter [Phys. Rev. Lett. 75, 2360 (1996)] we briefly discussed the existence and nature of ferroelectric order in positionally disordered dipolar materials. Here we report further results and give a complete description of our work. Simulations of randomly frozen and dynamically disordered dipolar soft spheres are used to study ferroelectric ordering in non-crystalline systems. We a...
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In gaseous state, the particles are randomly distributed in free space. There is no correlation between the particles that move in independent trajectories bouncing off of each other. The gases can not be seen because average distance between particles is larger than the wave length of visible light. In liquids, the particles are also distributed randomly in space but with specific correlation ...
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ژورنال
عنوان ژورنال: Physical Review A
سال: 1989
ISSN: 0556-2791
DOI: 10.1103/physreva.40.5444