Soft Matter Theory & Simulations Group

PRE: Liq. Cryst.

• Horizontal transportation of a Maltese cross pattern in nematic liquid crystalline droplets under a temperature gradient
  Author(s): Jun Yoshioka and Koji FukaoFlow and director fields strongly couple with each other in liquid crystalline systems, and herein we discuss the coupling effect in cylindrical and spherical-cap droplets formed by nematic liquid crystal. Applying a temperature gradient to droplets dispersed in a liquid solvent, we observed a cross...[Phys. Rev. E 99, 0 […]
• Monte Carlo study with reweighting of uniaxial nematic liquid crystals composed of biaxial molecules
  Author(s): Nababrata Ghoshal, Soumyajit Pramanick, Sudeshna DasGupta, and Soumen Kumar RoyWe present a high accuracy Monte Carlo simulation study of the uniaxial nematic (${N}_{U}$) to isotropic ($I$) phase transition of a lattice dispersion model of uniaxial nematics composed of biaxial molecules. The ${N}_{U}\text{−}I$ coexistence curve terminating at the […]
• Impact of polarized nanotube surface on ultrathin mesogen film properties: Computer simulation study
  Author(s): Krzysztof Górny, Violetta Raczyńska, Przemysław Raczyński, Zbigniew Dendzik, and Szymon StarzonekWe studied properties of monolayer films of $n$-cyanobiphenyl (with $n=5,...,8$) series of mesogens anchored on the surface of single walled boron nitride nanotube. In order to assess the impact of substrate polarization on the ordering effects we comp […]
• One-dimensional theoretical analysis of coupling and confinement effects on the cybotactic clusters of bent-core nematic liquid crystals
  Author(s): Sourav Patranabish, Yiwei Wang, Aloka Sinha, and Apala MajumdarThe bent-core liquid crystals (LCs) are highly regarded as the next-generation materials for electro-optic devices. The nematic (N) phase of these LCs possesses highly ordered smecticlike cybotactic clusters which are promising for electro-optic applications. We have studied a one-dime […]
• Fano resonance in a cholesteric liquid crystal with dye
  Author(s): A. H. GevorgyanIn this paper, we consider the optical properties of cholesteric liquid crystals (CLCs) with a dye. We investigate the reflection, transmission, and absorption spectra peculiarities. We show that in the presence of dye molecules, in certain conditions, the photonic band gap (PBG) splits into two, th...[Phys. Rev. E 99, 012702] Publi […]
• Negative viscosity of a liquid crystal in the presence of turbulence
  Author(s): Hiroshi Orihara, Yuko Harada, Fumiaki Kobayashi, Yuji Sasaki, Shuji Fujii, Yuki Satou, Yoshitomo Goto, and Tomoyuki NagayaWe report on the discovery of enormous negative viscosity in a nematic liquid crystal in the presence of turbulence induced by electric fields. As the negative viscosity in this system is so large, we are able to observe severa […]
• Effect of Sm-$A$ short-range order on the activation energies of translational and rotational viscosities of nematic liquid crystals with highly polar molecules
  Author(s): M. Praveen Kumar, D. Venkata Sai, and Surajit DharaWe report experimental studies on the temperature-dependent translational and rotational viscosities of a few nematic liquid crystals made of highly polar molecules. Cyanobiphenyl (nCB) with longitudinal and cyanobicyclohexane molecules (CCN-mn) with transverse dipole moments were chosen and the m […]
• Monte Carlo simulations of biaxial ordering in systems of uniaxially interacting rodlike ellipsoids
  Author(s): Tushar Kanti BoseThe minimal ingredient to generate a biaxial liquid-crystalline order is usually considered to be a strong biaxiality either in the molecular shape or in the molecular interactions. Although there is no fundamental reason to forbid a spontaneous biaxial liquid-crystalline ordering of pure uniaxial o...[Phys. Rev. E 98, 050701(R)] […]
• Effective dielectric tensor of deformed-helix ferroelectric liquid crystals with subwavelength pitch and large tilt angle
  Author(s): Leonardo Silvestri, Hrishikesh Srinivas, and François LadouceurShort pitch deformed helix ferroelectric liquid crystals have numerous applications as active materials in displays, optical telemetry, and biomedical devices. In this paper, we derive convenient analytical formulas to calculate the effective dielectric tensor of these materials beyond […]
• Critical behavior of the optical birefringence at the nematic to twist-bend nematic phase transition
  Author(s): Damian Pociecha, Catriona A. Crawford, Daniel A. Paterson, John M. D. Storey, Corrie T. Imrie, Nataša Vaupotič, and Ewa GoreckaThe critical behavior at the transition from a uniform nematic to a twist-bend modulated nematic phase is revealed and shown to be well explained by the mean field approximation. The study was performed on a group of mater […]