41 citations · 343 across the 18 of their papers we have counts for
18 papers
Anomalous temperature dependence in phase transitions via ballistic coalescence
Nalina Vadakkayil, Sutapa Roy, Jiarul Midya +1
We study kinetics of phase transitions within a single component Lennard-Jones model. For low enough particle densities disconnected clusters form that can move ballistically in an…
Moving Cooling Source Induced Phase Separation in Binary Liquids: an interplay of competing velocities
Lakshmipriya K, Harssh Karn, Sutapa Roy
We investigate phase separation dynamics in a binary mixture subjected to a moving cooling source from which cold temperature fronts propagate radially outward into the mixture. Th…
Critical surface adsorption of confined binary liquids with locally conserved mass and composition
Sutapa Roy, Felix Höfling
Close to a solid surface, the properties of a fluid deviate significantly from their bulk values. In this context, we study the surface adsorption profiles of a symmetric binary li…
Transient coarsening and the motility of optically heated Janus colloids in a binary liquid mixture
Juan Ruben Gomez-Solano, Sutapa Roy, Takeaki Araki +2
A gold-capped Janus particle suspended in a near-critical binary liquid mixture can self-propel under illumination. We have immobilized such a particle in a narrow channel and stud…
Aging Phenomena during Phase Separation in Fluids: Decay of autocorrelation for vapor-liquid transitions
Sutapa Roy, Arabinda Bera, Suman Majumder +1
We performed molecular dynamics simulations to study relaxation phenomena during vapor-liquid transitions in a single component Lennard-Jones system. Results from two different ove…
Coalescence preference and droplet size inequality during fluid phase segregation
Sutapa Roy
Using molecular dynamics simulations and scaling arguments, we investigate the coalescence preference dynamics of liquid droplets in a phase-segregating off-critical, single-compon…
Phase separation around heated colloid in bulk and under confinement
Sutapa Roy, Anna Maciolek
We study the non-equilibrium coarsening dynamics of a binary liquid solvent around a colloidal particle in a presence of a time-dependent temperature gradient that emerges after te…
Solvent coarsening around colloids driven by temperature gradients
Sutapa Roy, S. Dietrich, Anna Maciolek
Using mesoscopic numerical simulations and analytical theory we investigate the coarsening of the solvent structure around a colloidal particle emerging after a temperature quench…
Structure and dynamics of binary liquid mixtures near their continuous demixing transitions
Sutapa Roy, S. Dietrich, Felix Höfling
The dynamic and static critical behavior of five binary Lennard-Jones liquid mixtures, close to their continuous demixing points (belonging to the so-called model H' dynamic univer…
Kinetics of Fluid Phase Separation
Subir K. Das, Sutapa Roy, Jiarul Midya
We review understanding of kinetics of fluid phase separation in various space dimensions. Morphological differences, percolating or disconnected, based on overall composition in a…
Finite-size Scaling Study of Shear Viscosity Anomaly at Liquid-Liquid Criticality
Sutapa Roy, Subir K. Das
We study equilibrium dynamics of a symmetrical binary Lennard-Jones fluid mixture near its consolute criticality. Molecular dynamics simulation results for shear viscosity, , fr…
Simulation of Transport around the Coexistence Region of a Binary Fluid
Sutapa Roy, Subir K. Das
We use Monte Carlo and molecular dynamics simulations to study phase behavior and transport properties in a symmetric binary fluid where particles interact via Lennard-Jones potent…
Study of Critical Dynamics in Fluid via Molecular Dynamics in Canonical Ensemble
Sutapa Roy, Subir K. Das
With the objective of demonstrating usefulness of thermostats in the study of dynamic critical phenomena in fluids, we present results for transport properties in a binary Lennard-…
Finite-Size Effects in Dynamics: Critical vs Coarsening Phenomena
Subir K. Das, Sutapa Roy, Suman Majumder +1
Finite-size effects in systems with diverging characteristic lengthscale have been addressed via state-of-the-art Monte Carlo and molecular dynamics simulations of various models e…
Dynamics and Growth of Droplets Close to the Two-Phase Coexistence Curve in Fluids
Sutapa Roy, Subir K. Das
Results from the state-of-the-art molecular dynamics simulations are presented for both equilibrium and nonequilibrium dynamics following vapor-liquid transition in a single compon…
Nucleation and Growth of Droplets in Vapor-Liquid Transitions
Sutapa Roy, Subir K. Das
Results for the kinetics of vapor-liquid transitions, following temperature quenches with different densities, are presented from the molecular dynamics simulations of a Lennard-Jo…
Effects of Domain Morphology on Kinetics of Fluid Phase Separation
Sutapa Roy, Subir K. Das
Kinetics of phase separation in a three dimensional single-component Lennard-Jones fluid, that exhibits vapor-liquid transition, is studied via molecular dynamics simulations after…
Transport Phenomena in Fluids: Finite-size scaling for critical behavior
Sutapa Roy, Subir K. Das
Results for transport properties, in conjunction with phase behavior and thermodynamics, are presented at the criticality of a binary Lennard-Jones fluid from Monte Carlo and molec…