Cascade or not cascade? Energy transfer and elastic effects in active nematics

LN Carenza, L Biferale, G Gonnella - Europhysics Letters, 2020 - iopscience.iop.org
We numerically study the multi-scale properties of a 2d active gel to address the energy
transfer mechanism. We find that activity is able to excite long-ranged distortions of the …

Hydrodynamic effects on the liquid-hexatic transition of active colloids

G Negro, CB Caporusso, P Digregorio… - The European Physical …, 2022 - Springer
We study numerically the role of hydrodynamics in the liquid-hexatic transition of active
colloids at intermediate activity, where motility induced phase separation (MIPS) does not …

Phase behaviour and dynamics of three-dimensional active dumbbell systems

CB Caporusso, G Negro, A Suma, P Digregorio… - Soft Matter, 2024 - pubs.rsc.org
We present a comprehensive numerical study of the phase behavior and dynamics of a
three-dimensional active dumbbell system with attractive interactions. We demonstrate that …

Activity-induced isotropic-polar transition in active liquid crystals

MG Giordano, F Bonelli, LN Carenza… - Europhysics …, 2021 - iopscience.iop.org
Active fluids are intrinsically out-of-equilibrium systems due to the internal energy injection of
the active constituents. We show here that a transition from a motion-less isotropic state …

Unrestricted component count in multiphase lattice Boltzmann: A fugacity-based approach

M Soomro, LF Ayala - Physical Review E, 2023 - APS
Studies of multiphase fluids utilizing the lattice Boltzmann method (LBM) are typically
severely restricted by the number of components or chemical species being modeled. This …

The relationship between structure and rheology in a three-dimensional sheared lamellar mesophase

A Pal, SJ Jaju, V Kumaran - Soft Matter, 2023 - pubs.rsc.org
The evolution of a lamellar mesophase from an initially disordered state under shear is
examined using simulations of a mesoscale model based on a concentration field ψ that …

Phase separation kinetics and cluster dynamics in two-dimensional active dumbbell systems

CB Caporusso, LF Cugliandolo, P Digregorio… - Soft Matter, 2024 - pubs.rsc.org
Molecular dynamics simulations were employed to investigate the phase separation process
of a two-dimensional active Brownian dumbbell model. We evaluated the time dependence …

Macroscopic finite-difference scheme based on the mesoscopic regularized lattice-Boltzmann method

X Liu, Y Chen, Z Chai, B Shi - Physical Review E, 2024 - APS
In this paper, we develop a macroscopic finite-difference scheme from the mesoscopic
regularized lattice Boltzmann (RLB) method to solve the Navier-Stokes equations (NSEs) …

Anyonic defect braiding and spontaneous chiral symmetry breaking in dihedral liquid crystals

A Mietke, J Dunkel - Physical Review X, 2022 - APS
Dihedral (“k-atic”) liquid crystals (DLCs) are assemblies of microscopic constituent particles
that exhibit k-fold discrete rotational and reflection symmetries. Generalizing the half-integer …

Implementation of contact line motion based on the phase-field lattice Boltzmann method

L Ju, Z Guo, B Yan, S Sun - Physical Review E, 2024 - APS
This paper proposes a strategy to implement the free-energy-based wetting boundary
condition within the phase-field lattice Boltzmann method. The greatest advantage of the …