54 citations · 615 across the 62 of their papers we have counts for
63 papers
Emergent power-law interactions in disordered crystals
Pappu Acharya, Debankur Das, Surajit Sengupta +1
We derive exact results for the fluctuations in energy produced by microscopic disorder in near-crystalline athermal systems. Our formalism captures the heterogeneity in the elasti…
Pattern stabilisation in swarms of programmable active matter: a probe for turbulence at large length scales
Pankaj Popli, Prasad Perlekar, Surajit Sengupta
We propose an algorithm for creating stable, ordered, swarms of active robotic agents arranged in any given pattern. The strategy involves suppressing a class of fluctuations known…
Wrinkles, folds and ripplocations: unusual deformation structures of confined elastic sheets at non-zero temperatures
Debankur Das, Jürgen Horbach, Peter Sollich +2
We study the deformation of a fluctuating crystalline sheet confined between two flat rigid walls as a simple model for layered solids where bonds among atoms {\it within} the same…
Athermal fluctuations in disordered crystals
Pappu Acharya, Surajit Sengupta, Bulbul Chakraborty +1
We analyze the fluctuations in particle positions and inter-particle forces in disordered jammed crystals in the limit of weak disorder. We demonstrate that such athermal systems a…
A nucleation theory for yielding of nearly defect-free crystals: understanding rate dependent yield points
Vikranth Sagar Reddy, Parswa Nath, Jürgen Horbach +2
Experiments and simulations show that when an initially defect free rigid crystal is subjected to deformation at a constant rate, irreversible plastic flow commences at the so-call…
Exploring the link between crystal defects and non-affine displacement fluctuations
Pankaj Popli, Sayantani Kayal, Peter Sollich +1
We generalize, and then use, a recently introduced formalism to study thermal fluctuations of atomic displacements in several two and three dimensional crystals. We study both clos…