82 citations · 1.8k across the 93 of their papers we have counts for
14 papers · 1 filter
The conformational phase diagram of charged polymers in the presence of attractive bridging crowders
Kamal Tripathi, Hitesh Garg, R. Rajesh +1
Using extensive molecular dynamics simulations, we obtain the conformational phase diagram of a charged polymer in the presence of oppositely charged counterions and neutral attrac…
The conformational phase diagram of neutral polymers in the presence of attractive crowders
Hitesh Garg, R Rajesh, Satyavani Vemparala
Extensive coarse grained molecular dynamics simulations are performed to investigate the conformational phase diagram of a neutral polymer in the presence of attractive crowders. W…
Diffusion dynamics and steady states of systems of hard rods on the square lattice
Saugata Patra, Dibyendu Das, R. Rajesh +1
It is known from grand canonical simulations of a system of hard rods on two dimensional lattices that an orientationally ordered nematic phase exists only when the length of the r…
Regimes of strong electrostatic collapse of a highly charged polyelectrolyte in a poor solvent
Anvy Moly Tom, Satyavani Vemparala, R Rajesh +1
We perform extensive molecular dynamics simulations of a highly charged flexible polyelectrolyte (PE) chain in a poor solvent for the case when the chain is in a collapsed state an…
Mechanism of chain collapse of strongly charged polyelectrolytes
Anvy Moly Tom, Satyavani Vemparala, R. Rajesh +1
We perform extensive molecular dynamics simulations of a charged polymer in a good solvent in the regime where the chain is collapsed. We analyze the dependence of the gyration rad…
Aggregation Dynamics of Rigid Polyelectrolytes
Anvy Moly Tom, R. Rajesh, Satyavani Vemparala
Similarly-charged polyelectrolytes are known to attract each other and aggregate into bundles when the charge density of the polymers exceeds a critical value that depends on the v…
Inhomogeneous Cooling of the Rough Granular Gas in Two Dimensions
Sudhir N. Pathak, Dibyendu Das, R. Rajesh
We study the inhomogeneous clustered regime of a freely cooling granular gas of rough particles in two dimensions using large-scale event driven simulations and scaling arguments.…
Energy decay in three-dimensional freely cooling granular gas
Sudhir N. Pathak, Zahera Jabeen, Dibyendu Das +1
The kinetic energy of a freely cooling granular gas decreases as a power law at large times . Two theoretical conjectures exist for the exponent . One based on balli…
Aggregation of rod-like polyelectrolyte chains in the presence of monovalent counterions
Anoop Varghese, R. Rajesh, Satyavani Vemparala
Using molecular dynamics simulations, it is demonstrated that monovalent counterions can induce aggregation of similarly charged rod-like polyelectrolyte chains. The critical value…
Spatial Structures and Giant Number Fluctuations in Models of Active Matter
Supravat Dey, Dibyendu Das, R. Rajesh
The large scale fluctuations of the ordered state in active matter systems are usually characterised by studying the "giant number fluctuations" of particles in any finite volume,…
Shock Propagation in Granular Flow Subjected to an External Impact
Sudhir N. Pathak, Zahera Jabeen, Purusattam Ray +1
We analyze a recent experiment [Phys. Rev. Lett., {\bf103}, 224501 (2009)] in which the shock, created by the impact of a steel ball on a flowing monolayer of glass beads, is quant…
Coarse grained dynamics of the freely cooling granular gas in one dimension
Mahendra Shinde, Dibyendu Das, R. Rajesh
We study the dynamics and structure of clusters in the inhomogeneous clustered regime of a freely cooling granular gas of point particles in one dimension. The coefficient of resti…
Universal scaling dynamics in a perturbed granular gas
Zahera Jabeen, R. Rajesh, Purusattam Ray
We study the response of a granular system at rest to an instantaneous input of energy in a localised region. We present scaling arguments that show that, in dimensions, the ra…
On the equivalence of the freely cooling granular gas to the sticky gas
Mahendra Shinde, Dibyendu Das, R. Rajesh
A freely cooling granular gas with velocity dependent restitution coefficient is studied in one dimension. The restitution coefficient becomes near elastic when the relative veloci…