References of "Physical Review. E : Statistical, Nonlinear, and Soft Matter Physics"
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See detailEntropy production in the nonequilibrium steady states of interacting many-body systems
Dorosz, Sven UL; Pleimling, Michel

in Physical Review. E : Statistical, Nonlinear, and Soft Matter Physics (2011), 83(3),

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See detailFree energies, vacancy concentrations and density distribution anisotropies in hard sphere crystals: A combined density functional and simulation study
Oettel, M.; Görig, S.; Härtl, A. et al

in Physical Review. E : Statistical, Nonlinear, and Soft Matter Physics (2010), 82(5),

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See detailHard-sphere fluids in annular wedges: Density distributions and depletion potentials
Botan, V.; Pesth, F.; Schilling, Tanja UL et al

in Physical Review. E : Statistical, Nonlinear, and Soft Matter Physics (2009), 79(6),

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See detailWork fluctuations in quantum spin chains
Dorosz, Sven UL; Platini, Thierry; Karevski, Dragi

in Physical Review. E : Statistical, Nonlinear, and Soft Matter Physics (2008), 77(5),

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See detailComputer simulation study of a liquid crystal confined to a spherical cavity
Trukhina, Yu; Schilling, Tanja UL

in Physical Review. E : Statistical, Nonlinear, and Soft Matter Physics (2008), 77(1),

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See detailSimple monoclinic crystal phase in suspensions of hard ellipsoids
Pfleiderer, P.; Schilling, Tanja UL

in Physical Review. E : Statistical, Nonlinear, and Soft Matter Physics (2007), 75(2),

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See detailOrder-disorder molecular model of the smectic-A-smectic-C phase transition in materials with conventional and anomalously weak layer contraction
Gorkunov, M. V.; Osipov, M. A.; Lagerwall, Jan UL et al

in Physical Review. E : Statistical, Nonlinear, and Soft Matter Physics (2007), 76(5), 051706

We develop a molecular-statistical theory of the smectic-A-smectic-C transition which is described as a transition of the order-disorder type. The theory is based on a general expansion of the effective ... [more ▼]

We develop a molecular-statistical theory of the smectic-A-smectic-C transition which is described as a transition of the order-disorder type. The theory is based on a general expansion of the effective interaction potential and employs a complete set of orientational order parameters. All the order parameters of the smectic-C phase including the tilt angle are calculated numerically as functions of temperature for a number of systems which correspond to different transition scenario. The effective interaction potential and the parameters of the transition are also calculated for specific molecular models based on electrostatic and induction interaction between molecular dipoles. The theory successfully reproduces the main properties of both conventional and so-called ``de Vries-type'' smectic liquid crystals, clarifies the origin of the anomalously weak layer contraction and describes the tricritical behavior at the smectic-A-smectic-C transition. The ``de Vries behavior,'' i.e., anomalously weak layer contraction is also obtained for a particular molecular model based on interaction between longitudinal molecular dipoles. A simple phenomenological model is presented enabling one to obtain explicit expressions for the layer spacing and the tilt angle which are used to fit the experimental data for a number of materials. [less ▲]

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See detailMolecular model for de Vries type smectic-A–smectic-C phase transition in liquid crystals
Gorkunov, M. V.; Giesselmann, Frank; Lagerwall, Jan UL et al

in Physical Review. E : Statistical, Nonlinear, and Soft Matter Physics (2007), 75(6), 060701

We develop both phenomenological and molecular-statistical theory of smectic-A-smectic-C phase transition with anomalously weak smectic layer contraction. Using a general mean-field molecular model, we ... [more ▼]

We develop both phenomenological and molecular-statistical theory of smectic-A-smectic-C phase transition with anomalously weak smectic layer contraction. Using a general mean-field molecular model, we demonstrate that a relatively simple interaction potential suffices to describe the transition both in conventional and de Vries type smectics. The theoretical results are in excellent agreement with experimental data. The approach can be used to describe tilting transitions in other soft matter systems. [less ▲]

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See detailIsotropic-nematic interface in suspensions of hard rods: Mean-field properties and capillary waves
Wolfsheimer, S.; Tanase, C.; Shundyak, K. et al

in Physical Review. E : Statistical, Nonlinear, and Soft Matter Physics (2006), 73(6),

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See detailMonte Carlo study of hard pentagons
Schilling, Tanja UL; Pronk, S.; Mulder, B. et al

in Physical Review. E : Statistical, Nonlinear, and Soft Matter Physics (2005), 71(3),

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See detailInterfacial tension of the isotropic-nematic interface in suspensions of soft spherocylinders
Vink, R. L. C.; Schilling, Tanja UL

in Physical Review. E : Statistical, Nonlinear, and Soft Matter Physics (2005), 71(5),

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See detailDemonstration of the antiferroelectric aspect of the helical superstructures in SmC*, SmC$_α$* and SmC$_a$* liquid crystals
Lagerwall, Jan UL

in Physical Review. E : Statistical, Nonlinear, and Soft Matter Physics (2005), 71(5), 051703

We show that the helical superstructure in chiral smectic-C-type liquid crystal phases can, if the pitch is short enough, give rise to the tristate switching characteristic of antiferroelectrics even if ... [more ▼]

We show that the helical superstructure in chiral smectic-C-type liquid crystal phases can, if the pitch is short enough, give rise to the tristate switching characteristic of antiferroelectrics even if the local commen- surate order is synpolar as in the ordinary Sm-C* phase. Since the field-induced helix unwinding exhibits a distinct threshold, in contrast to mere helix distortion, two unwinding / rewinding peaks per half cycle of an applied triangular wave voltage can be seen in the current response. By considering this antiferroelectric aspect * of the helical modulation we give a simple explanation of why the ultrashort-pitch Sm-C􏰄 phase exhibits antiferroelectric switching although its dielectric spectroscopy response is qualitatively identical to that of the synpolar Sm-C* phase. Using data from the compound MHPOCBC we show that the Sm-C*􏰄 dielectric re- sponse is well described by continuum theory. We also demonstrate that, if the pitch is very short as in MHPOCBC, helix unwinding / rewinding leave characteristic traces in the electrooptic response even in the commensurately antiferroelectric 􏰐antipolar􏰋 Sm-C*a phase, distinguishable from the switching beween the antipolar and synpolar states of this phase. [less ▲]

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See detailPolarity-directed analog electrooptic switching in a low-polarization chiral smectic liquid crystal with positive dielectric anisotropy
Lagerwall, Jan UL; Kane, Alexander; Clark, Noel A. et al

in Physical Review. E : Statistical, Nonlinear, and Soft Matter Physics (2004), 70(3), 031703

We describe an analog electro-optic (EO) switching mechanism occurring in thin cells filled with a low- polarization ferroelectric liquid crystal mixture with positive dielectric anisotropy. The mixture ... [more ▼]

We describe an analog electro-optic (EO) switching mechanism occurring in thin cells filled with a low- polarization ferroelectric liquid crystal mixture with positive dielectric anisotropy. The mixture is composed of an achiral nonpolar smectic-C 􏰐Sm-C􏰋 host doped with a small amount of a commercially available unichiral compound. The switching mechanism provides analog EO behavior, and thus could be attractive for informa- tion display applications. The process is polarization-driven for weak fields, while for higher field strength the dielectric coupling dominates the process. [less ▲]

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See detailTilt plane orientation in antiferroelectric liquid crystal cells and the origin of the pretransitional effect
Rudquist, Per; Lagerwall, Jan UL; Meier, Johann G. et al

in Physical Review. E : Statistical, Nonlinear, and Soft Matter Physics (2002), 66(6), 061708

The optic, electro-optic, and dielectric properties of antiferroelectric liquid crystals 􏰐AFLCs􏰋 are analyzed and discussed in terms of the local tilt plane orientation. We show that the so-called ... [more ▼]

The optic, electro-optic, and dielectric properties of antiferroelectric liquid crystals 􏰐AFLCs􏰋 are analyzed and discussed in terms of the local tilt plane orientation. We show that the so-called pretransitional effect is a combination of two different electro-optic modes: the field-induced antiphase distortion of the antiferroelectric structure and the field-induced reorientation of the tilt plane. In the presence of a helix, the latter corresponds to a field-induced distortion of the helix. Both electro-optic modes are active only when the electric field has a component along the tilt plane. Thus, by assuring a horizontal surface-stabilized condition, where the helix is unwound by surface action and the tilt plane is everywhere parallel to the cell plates, the pretransitional effect should be suppressed. We also discuss the dielectrically active modes in AFLCs and under which circum- stances they contribute to the measured dielectric permittivity. [less ▲]

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See detailAntiferroelectric liquid crystal mixture without smectic layer shrinkage at the direct sma* - smca* transition
Giesselmann, Frank; Lagerwall, Jan UL; Andersson, G. et al

in Physical Review. E : Statistical, Nonlinear, and Soft Matter Physics (2002), 66(5), 051704

We report results of x-ray, optic, electro-optic, and dielectric investigations on an antiferroelectric liquid- crystal mixture exhibiting a direct second-order phase transition between the Sm-A* and Sm ... [more ▼]

We report results of x-ray, optic, electro-optic, and dielectric investigations on an antiferroelectric liquid- crystal mixture exhibiting a direct second-order phase transition between the Sm-A* and Sm-Ca* phases with virtually no shrinkage in the smectic layer spacing. The birefringence measurements and texture observations suggest that the phase transition follows the diffuse cone model of Adrian de Vries, which explains the constant layer spacing. The antiferroelectric nature of the tilted phase is verified by the presence of twin polarization reversal peaks in the current response and by the absence of strong absorptions in the dielectric spectrum. The threshold for switching this phase to the synclinic, ferroelectric state is sharp and occurs at a very low voltage. [less ▲]

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See detailSmectic filaments in colloidal suspensions of rods
Frenkel, Daan; Schilling, Tanja UL

in Physical Review. E : Statistical, Nonlinear, and Soft Matter Physics (2002), 66(4),

In supersaturated isotropic mixtures of hard rods, smectic filaments have recently been observed. We propose a model for formation and growth of these filaments similar to the Hoffman-Lauritzen model for ... [more ▼]

In supersaturated isotropic mixtures of hard rods, smectic filaments have recently been observed. We propose a model for formation and growth of these filaments similar to the Hoffman-Lauritzen model for polymer crystallization. Filament thickness is determined by a compromise between maximizing the amount of smectic phase formed and minimizing the nucleation barrier for adding new segments to the growing filament. We compare our analytical results to kinetic Monte Carlo simulations. [less ▲]

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See detailCoupled Molecular Dynamics and Finite Element Method: simulations of kinetics induced by field mediated interaction
Cascio, Michele; Baroli, Davide UL; Deretzsis, Ioannis et al

in Physical Review. E : Statistical, Nonlinear, and Soft Matter Physics (n.d.)

A computational approach coupling Molecular Dynamics (MD)-Finite Element Method (FEM) techniques is here proposed for the theoretical study of the dynamics of particles subjected to the electromechanical ... [more ▼]

A computational approach coupling Molecular Dynamics (MD)-Finite Element Method (FEM) techniques is here proposed for the theoretical study of the dynamics of particles subjected to the electromechanical forces. The system consists in spherical particles (modeled as micrometric rigid bodies with proper densities and dielectric functions) suspended in a colloidal solution which flows in a microfluidic channel in the presence of a generic non-uniform variable electric field, generated by electrodes. The particles are subjected to external forces (e.g. drag or gravity) which satisfy the particle-like formulation, typical of the MD approach, and to electromechanical force which in turn needs, during the equation of the motion integration, the self-consistent solutions in three dimensions of correct continuum field equation. In the MD-FEM method used in this work, Finite Element Method is applied to solve the continuum field equation and MD technique is applied to the stepwise explicit integration of equation of the motion. Our work shows the potential of coupled MD-FEM for the study of electromechanical particles and opens the double perspective to use a) MD away from the field of the atomistic simulation and b) the continuum/particle approach to another case where the conventional forces’ evaluation method used in MD is not applicable. [less ▲]

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