176 citations · 353 across the 14 of their papers we have counts for
14 papers
Active-parameter polydispersity in the 2d ABP Yukawa model
Shibu Saw, Lorenzo Costigliola, Jeppe C. Dyre
In both experiments and simulations the most commonly studied kind of parameter polydispersity is that of varying particles size. This paper investigates by simulations the effects…
Active-matter isomorphs in the size-polydisperse Ornstein-Uhlenbeck Lennard-Jones model
Daniel Jespersen, Lorenzo Costigliola, Jeppe C. Dyre +1
This paper studies size-polydisperse Lennard-Jones systems described by active Ornstein-Uhlenbeck particle dynamics. The focus is on the existence of isomorphs (curves of invariant…
Configurational temperature in active matter. II. Quantifying the deviation from thermal equilibrium
Shibu Saw, Lorenzo Costigliola, Jeppe C. Dyre
This paper suggests using the configurational temperature $\Tc$ for quantifying how far an active-matter system is from thermal equilibrium. We measure this ``distance'' by the rat…
Configurational temperature in active matter. I. Lines of invariant physics in the phase diagram of the Ornstein-Uhlenbeck model
Shibu Saw, Lorenzo Costigliola, Jeppe C. Dyre
This paper shows that the configurational temperature of liquid-state theory, $\Tc$, defines an energy scale, which can be used for adjusting model parameters of active Ornstein-Uh…
Structure of the Lennard-Jones liquid estimated from a single simulation
Shibu Saw, Jeppe C. Dyre
Combining the recent Piskulich-Thompson approach [Z. A. Piskulich and W. H. Thompson, {\it J. Chem. Phys.} {\bf 152}, 011102 (2020)] with isomorph theory, from a single simulation,…
Unsteady flow, clusters and bands in a model shear-thickening fluid
Shibu Saw, Mathias Grob, Annette Zippelius +1
We analyse the flow curves of a two-dimensional assembly of granular particles which are interacting via frictional contact forces. For packing fractions slightly below jamming, th…
The Structural Origin of Enhanced Dynamics at the Surface of a Glassy Alloy
Gang Sun, Shibu Saw, Ian Douglass +1
The enhancement of mobility at the surface of an amorphous alloy is studied using a combination of molecular dynamic simulations and normal mode analysis of the non-uniform distrib…
Rigidity in Condensed Matter and its Origin in Configurational Constraint
Shibu Saw, Peter Harrowell
Motivated by the formal argument that a non-zero shear modulus is the result of averaging over a constrained configurations space, we demonstrate that the shear modulus calculated…
Non-Affine Displacements and the Non-Linear Response of a Strained Amorphous Solid
Shibu Saw, Sneha Abraham, Peter Harrowell
We demonstrate that irreversible structural reorganization is not necessary for the observation of yield behaviour in an amorphous solid. While the majority of solids strained to t…
The Geometric Mean Squared Displacement and the Stokes-Einstein Scaling in a Supercooled Liquid
Shibu Saw, Peter Harrowell
It is proposed that the rate of relaxation in a liquid is better described by the geometric mean of the van Hove distribution function, rather than the standard arithmetic mean use…
Spatial modulation of the composition of a binary liquid near a repulsive wall
Shibu Saw, S. M. Kamil, Chandan Dasgupta
When a binary liquid is confined by a strongly repulsive wall, the local density is depleted near the wall and an interface similar to that between the liquid and its vapor is form…
Liquid-liquid critical point in supercooled silicon
Vishwas V Vasisht, Shibu Saw, Srikanth Sastry
A novel liquid-liquid phase transition has been proposed and investigated in a wide variety of pure substances recently, including water, silica and silicon. From computer simulati…
Computer Simulation Study of the Phase Behavior and Structural Relaxation in a Gel-Former Modeled by Three Body Interactions
Shibu Saw, Niels L. Ellegaard, Walter Kob +1
We report a computer simulation study of a model gel-former obtained by modifying the three-body interactions of the Stillinger-Weber potential for silicon. This modification reduc…
Structural Relaxation of a Gel Modeled by Three Body Interactions
Shibu Saw, Niels L. Ellegaard, Walter Kob +1
We report a molecular dynamics simulation study of a model gel whose interaction potential is obtained by modifying the three body Stillinger-Weber model potential for silicon. The…