Isotropic-nematic transition in hard-rod fluids: Relation between continuous and restricted-orientation models

Free planar isotropic-nematic interfaces in binary hard-rod fluids.

Within the Onsager theory we study free planar isotropic-nematic interfaces in binary mixtures of hard rods. For sufficiently different particle shapes the bulk phase diagrams of these mixtures exhibit a triple point, where an isotropic (I) phase coexists with two nematic phases (N1 and N2) of different composition. For all explored mixtures we find that upon approach of the triple point the I-...

Continuous nematic-isotropic transition in submicron-size liquid-crystal droplets.

The isotropic-nematic phase transition in uniaxial hard ellipsoid fluids: coexistence data and the approach to the Onsager limit

The isotropic-nematic (I-N) phase transition in hard ellipsoid fluids has been studied by computer simulation, using the Gibbs-Duhem integration technique introduced by Kofke; and theoretically, using Onsager theory and the Parsons-Lee improvement. In the simulations, the I-N coexistence line is mapped out in the P -x plane, where P is the pressure and x is the elongation, by numerically integr...

The isotropic-nematic and nematic-nematic phase transition of binary mixtures of tangent hard-sphere chain fluids: an analytical equation of state.

An analytical equation of state (EoS) is derived to describe the isotropic (I) and nematic (N) phase of linear- and partially flexible tangent hard-sphere chain fluids and their mixtures. The EoS is based on an extension of Onsager's second virial theory that was developed in our previous work [T. van Westen, B. Oyarzún, T. J. H. Vlugt, and J. Gross, J. Chem. Phys. 139, 034505 (2013)]. Higher v...

Isotropic-nematic phase transition in amyloid fibrilization.

We carry out a theoretical study on the isotropic-nematic phase transition and phase separation in amyloid fibril solutions. Borrowing the thermodynamic model employed in the study of cylindrical micelles, we investigate the variations in the fibril length distribution and phase behavior with respect to changes in the protein concentration, fibril's rigidity, and binding energy. We then relate ...