On the existence of thermodynamically stable rigid solids
Customarily, crystalline solids are defined to be rigid since they resist changes of shape
determined by their boundaries. However, rigid solids cannot exist in the thermodynamic …
determined by their boundaries. However, rigid solids cannot exist in the thermodynamic …
Elasticity in crystals with a high density of local defects: Insights from ultra-soft colloids
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 …
ubiquitous and their role becomes relevant in the mechanical response of these solids …
Excess vibrational modes of a crystal in an external non-affine field
S Ganguly, S Sengupta - Journal of Chemical Sciences, 2017 - Springer
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 response …
affine”. While the former couples to external stress with familiar consequences, the response …
Pattern stabilization in swarms of programmable active matter: A probe for turbulence at large length scales
P Popli, P Perlekar, S Sengupta - Physical Review E, 2021 - APS
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 …
arranged in any given pattern. The strategy involves suppressing a class of fluctuations …
Thermal vibration contribution to continuum stress in the elastic regime
R Parthasarathy - Mechanics Research Communications, 2018 - Elsevier
Homogeneous deformation of an ordered crystalline solid at finite temperature can cause
non-affine transformation of atomic trajectories. In such a case, continuum measures based …
non-affine transformation of atomic trajectories. In such a case, continuum measures based …