6 papers
Thermal transport characteristics of Fermi-Pasta-Ulam chains undergoing soft-sphere type collisions
Sankhadeep Bhattacharyya, Puneet Kumar Patra
We show numerically that including soft-sphere type collisions in the celebrated Fermi-Pasta-Ulam () chain completely alters the thermal transport characteristics. The resulti…
Temperature and its control in molecular dynamics simulations
M Sri Harish, Puneet Kumar Patra
The earliest molecular dynamics simulations relied on solving the Newtonian or equivalently the Hamiltonian equations of motion for a system. While pedagogically very important as…
Consistent evaluation of continuum scale properties of Graphene
Sourabh S Gandhi, Puneet Kumar Patra
We handshake statistical mechanics with continuum mechanics to develop a methodology for consistent evaluation of the continuum scale properties of graphene. The scope is kept limi…
A simple generalization of Prandtl-Tomlinson model to study nanoscale rolling friction
Avirup Sircar, Puneet Kumar Patra
Prandtl-Tomlinson (PT) model has been very successful in explaining nanoscale friction in a variety of situations. However, the simplistic PT model, on account of having a point ma…
Thermal Conduction in one dimensional chains with colliding particles
Sankhadeep Bhattacharyya, Puneet Kumar Patra
This work relaxes the assumption of point particles prevalent in the study of thermal transport characteristics in chains. The particles of the modified chain, henceforth ter…
Heat pump without particle transport or external work on the medium achieved by differential thermostatting of the phase space
Puneet Kumar Patra, Baidurya Bhattacharya
We propose a new mechanism that enables heat flow from a colder region to a hotter region without necessitating either particle transport or external work on the conductor, thereby…