Biaxial Nematic Order in the Hard-boomerang Fluid

Teixeira, Paulo Ivo Cortez; Masters, Andrew J.; Mulder, Bela M.

doi:10.1080/10587259808048440

Cited by 120 publications

(104 citation statements)

References 46 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…29,30 The good agreement between hard-core models and some experiments suggests that entropy alone can suffice to drive the formation of ordered structures. 31 High-aspect ratio molecules with a bent core 32,33 or a banana shape 34,35 assemble in an even richer set of morphologies, including biaxial nematic, 36,37 fan-shaped texture, 38 and nematic with splay-bend deformation or conical twist-bend helix. 39 From the technological viewpoint these structures are quite interesting.…”

Section: Introductionmentioning

confidence: 99%

Phase ordering of zig-zag and bow-shaped hard needles in two dimensions

Tavarone

Stark

2015

The Journal of Chemical Physics

View full text Add to dashboard Cite

We perform extensive Monte Carlo simulations of a two-dimensional bent hard-needle model in both its chiral zig-zag and its achiral bow-shape configurations and present their phase diagrams. We find evidence for a variety of stable phases: isotropic, quasi-nematic, smectic-C, anti-ferromorphic smectic-A, and modulated-nematic. This last phase consists of layers formed by supramolecular arches. They create a modulation of the molecular polarity whose period is sensitively controlled by molecular geometry. We identify transition densities using correlation functions together with appropriately defined order parameters and compare them with predictions from Onsager theory. The contribution of the molecular excluded area to deviations from Onsager theory and simple liquid crystal phase morphology is discussed. We demonstrate the isotropic-quasi-nematic transition to be consistent with a Kosterlitz-Thouless disclination unbinding scenario. C 2015 AIP Publishing LLC. [http://dx

show abstract

Section: Introductionmentioning

confidence: 99%

Phase ordering of zig-zag and bow-shaped hard needles in two dimensions

Tavarone

Stark

2015

The Journal of Chemical Physics

View full text Add to dashboard Cite

show abstract

“…This is of the same form as equation 30. Following the rest of the derivation from equations 30 to 53 leads to our final equivalent expression for the component of the pressure tensor: (61) note that as previously (in equation 53) V i has been replaced by V in this expression.…”

Section: Calculating Components Of the Pressure Tensor With Anisotropmentioning

confidence: 89%

“…However the aforementioned methods are not suitable for molecules which are non-convex in shape. If one considers, for example, systems of flexible hard-sphere chains (see references [28,29] for work with their linear counterparts), or of crescent-shaped / banana-shaped (bent-core) molecules, [30][31][32] a more-general method will be required that is able to correctly capture all of the repulsive interactions that such molecules exert upon their surroundings.…”

Section: Isotropic Volume Perturbations For Non-convex Hard-body Molementioning

confidence: 99%

Subtleties in the calculation of the pressure and pressure tensor of anisotropic particles from volume-perturbation methods and the apparent asymmetry of the compressive and expansive contributions

et al. 2011

View full text Add to dashboard Cite

“…In the V-shaped or bent-core liquid crystal theory, however, these material parameters are functions of the bent-angle (β * ) according to Teixeira et al [38]. We briefly 1 2 sin 2β * ))|).…”

Section: Smoluchowski Equationmentioning

confidence: 99%

Biaxial phases of bent-core liquid crystal polymers in shear flows

Sircar¹,

Li²,

Wang³

2010

Communications in Mathematical Sciences

View full text Add to dashboard Cite

Abstract. We develop a kinetic theory of the biaxial phases for the bent-core or V-shaped liquid crystal polymer solution (VLCPS). The Brownian motion of the biaxial molecules, biaxial molecular excluded interaction, and the rotary convection are modeled explicitly. Using the hydrodynamic theory, we study the flow-driven orientational dynamics and the corresponding rheological response in selected regimes of plane shear flows, strength of intermolecular interaction, and the bent-angle of the molecule. We identify three steady state biaxial phases and three periodic motions at various regimes of the shear rate and strength of the intermolecular potential. Phase transition sequences among the orientational phases and motions are documented with respect to the strength of the intermolecular potential at fixed bent angles. The effect of the molecular configuration (or the bentangle) of the V-shaped molecule on mesoscopic phases and their transition sequences is investigated as well.

show abstract

Biaxial Nematic Order in the Hard-boomerang Fluid

Cited by 120 publications

References 46 publications

Phase ordering of zig-zag and bow-shaped hard needles in two dimensions

Phase ordering of zig-zag and bow-shaped hard needles in two dimensions

Subtleties in the calculation of the pressure and pressure tensor of anisotropic particles from volume-perturbation methods and the apparent asymmetry of the compressive and expansive contributions

Biaxial phases of bent-core liquid crystal polymers in shear flows

Contact Info

Product

Resources

About