54 citations · 132 across the 14 of their papers we have counts for
14 papers
Continuum mechanics for the elastic properties of crystals: Microscopic approach based on projection-operator formalism
Florian Miserez, Saswati Ganguly, Rudolf Haussmann +1
We present a microscopic derivation of the laws of continuum mechanics of nonideal ordered solids including dissipation, defect diffusion, and heat transport. Starting point is the…
Elasticity in crystals with high density of local defects : insights from ultra-soft colloids
Saswati Ganguly, Gaurav Prakash Shrivastav, Shang-Chun Lin +5
In complex crystals close to melting or at finite temperatures, different types of defects are ubiquitous and their role becomes relevant in the mechanical response of these solids…
The free energy of grain boundaries from atomistic computer simulation
Saswati Ganguly, Jürgen Horbach
A novel thermodynamic integration (TI) scheme is presented that allows computing the free energy of grain boundaries (GBs) in crystals from atomistic computer simulation. Unlike pr…
Do thermodynamically stable rigid solids exist?
Parswa Nath, Saswati Ganguly, Jürgen Horbach +3
Customarily, crystalline solids are defined to be {\em rigid} since they resist changes of shape determined by their boundaries. However, rigid solids cannot exist in the thermodyn…
Plastic deformation of a permanently bonded network: stress relaxation by pleats
Saswati Ganguly, Debankur Das, Jürgen Horbach +3
We show that a flat two dimensional network of connected vertices, when stretched, may deform plastically by producing `pleats'; system spanning linear structures with width compar…
Translationally invariant colloidal crystal templates
Pankaj Popli, Saswati Ganguly, Surajit Sengupta
We show that dynamic, feed-back controlled optical traps, whose positions depend on the instantaneous local configuration of particles in a pre-determined way, can stabilise colloi…
Contrasting the dynamics of elastic and non-elastic deformations across an experimental colloidal Martensitic transition
Saswati Ganguly, Priti S. Mohanty, Peter Schurtenberger +2
We present a framework to segregate the roles of elastic and non-elastic deformations in the examination of real-space experiments of solid-solid Martensitic transitions. The Marte…
Excess vibrational modes of a crystal in an external non-affine field
Saswati Ganguly, Surajit Sengupta
Thermal displacement fluctuations in a crystal may be classified as either "affine" or "non-affine". While the former couples to external stress with familiar consequences, the res…
Equilibrium and dynamic pleating of a crystalline bonded network
Saswati Ganguly, Jürgen Horbach, Peter Sollich +3
We describe a phase transition that gives rise to structurally non-trivial states in a two-dimensional ordered network of particles connected by harmonic bonds. Monte Carlo simulat…
Amorphization of a crystalline solid by plastic deformation
Saswati Ganguly, Juergen Horbach, Peter Sollich +2
We demonstrate that plastic deformation in solids is associated with a dynamic transition that is reminiscent to the transition from a superconducting to a mixed phase in Type II s…
Non-affine fluctuations and the Statistics of Defect Precursors in the Planar Honeycomb Lattice
Amartya Mitra, Saswati Ganguly, Surajit Sengupta +1
Certain localised displacement fluctuations in the planar honeycomb lattice may be identified as precursors to topological defects. We show that these fluctuations are among the mo…
Statistics of non-affine defect precursors: tailoring defect densities in colloidal crystals using external fields
Saswati Ganguly, Surajit Sengupta, Peter Sollich
Coarse-graining atomic displacements in a solid produces both local affine strains and "non-affine" fluctuations. Here we study the equilibrium dynamics of these coarse grained qua…
Pre-yield non-affine fluctuations and a hidden critical point in strained crystals
Tamoghna Das, Saswati Ganguly, Surajit Sengupta +1
A crystalline solid exhibits thermally induced localised {\em non-affine} droplets in the absence of external stress. Here we show that upon an imposed shear, the size of these dro…
Non-affine displacements in crystalline solids in the harmonic limit
Saswati Ganguly, Surajit Sengupta, Peter Sollich +1
A systematic coarse graining of microscopic atomic displacements generates a local elastic deformation tensor as well as a positive definite scalar measuring non-…