We show that memory can be encoded in a model amorphous solid subjected to athermal oscillatory shear deformations, and in an analogous spin model with disordered interactions, sharing the feature of a deformable energy ...
Di Michele, L.; Fiocco, D.; Varrato, F.; Sastry, Srikanth; Eiser, E.; Foffi, G.(Royal Society of Chemistry, 2014)
Recently we have introduced bigels, inter-penetrating gels made of two different colloidal species. Even if particles with simple short-range isotropic potential are employed, the selective interactions enable the tunability ...
Maiti, Moumita; Sastry, Srikanth(American Institute of Physics, 2014)
We calculate the free volume distributions of nearly jammed packings of monodisperse and bidisperse hard sphere configurations. These distributions differ qualitatively from those of the fluid, displaying a power law tail ...
Vasisht, Vishwas V.; Mathew, John; Sengupta, Shiladitya; Sastry, Srikanth(American Institute of Physics, 2014)
Anomalous behaviour in density, diffusivity, and structural order is investigated for silicon modeled by the Stillinger-Weber potential by performing molecular dynamics simulations. As previously reported in the case of ...
Sengupta, Shiladitya; Vasisht, Vishwas V.; Sastry, Srikanth(American Institute of Physics, 2014)
By modifying the tetrahedrality (the strength of the three body interactions) in the well-known Stillinger-Weber model for silicon, we study the diffusivity of a series of model liquids as a function of tetrahedrality and ...
We present a study of two model liquids with different interaction potentials, exhibiting similar structure but significantly different dynamics at low temperatures. By evaluating the configurational entropy, we show that ...
In this paper, we present a study of supercooled liquids interacting with the Lennard Jones potential and the corresponding purely repulsive (Weeks-Chandler-Andersen) potential, over a range of densities and temperatures, ...
The central problem in the study of glass-forming liquids and other glassy systems is the understanding of the complex structural relaxation and rapid growth of relaxation times seen on approaching the glass transition. A ...
Vinutha, H. A.; Sastry, Srikanth(IoP Publishing Ltd, 2016)
It has recently been demonstrated that shear deformation of frictionless sphere packings leads to structures that will undergo jamming in the presence of friction, at densities well below the isotropic jamming point phi(j) ...
Temporal relaxation of density fluctuations in supercooled liquids near the glass transition occurs in multiple steps. Using molecular dynamics simulations for three model glass-forming liquids, we show that the short-time ...
Vinutha, H. A.; Sastry, Srikanth(Nature Publishing Group, 2016)
Amorphous sphere packings have been intensely investigated to understand mechanical and flow behaviour of dense granular matter and to explore universal aspects of the jamming transition, from fluid to structurally arrested ...
Nandi, Manoj Kumar; Banerjee, Atreyee; Sengupta, Shiladitya; Sastry, Srikanth; Bhattacharyya, Sarika Maitra(American Institute of Physics, 2015)
We analyze the dynamics of model supercooled liquids in a temperature regime where predictions of mode coupling theory (MCT) are known to be valid qualitatively. In this regime, the Adam-Gibbs (AG) relation, based on an ...
Hentschel, H. G. E.; Jaiswal, Prabhat K.; Procaccia, Itamar; Sastry, Srikanth(American Physical Society, 2015)
We focus on the probability distribution function (PDF) P(Delta gamma; gamma) where Delta gamma are the measured strain intervals between plastic events in a athermal strained amorphous solids, and. measures the accumulated ...
Parmar, Anshul D. S.; Sastry, Srikanth(American Chemical Society, 2015)
An understanding of the origin of fragility, which the rapidity of change of viscosity and related dynamical quantities, has been sought by a variety of approaches over the years. Within the framework of the Adam Gibbs ...
Maiti, Moumita; Vinutha, H. A.; Sastry, Srikanth; Heussinger, Claus(American Institute of Physics, 2015)
Using an athermal quasistatic simulation protocol, we study the distribution of free volumes in sheared hard-particle packings close to, but below, the random-close packing threshold. We show that under shear, and independent ...