5 papers · 1 filter
From Freezing to Terminal Packing: A Puzzle and a Paradox
Biman Bagchi
A density-functional theory developed for equilibrium freezing also produces a high-density endpoint close to terminal packing. We revisit the nonlinear Ramakrishnan--Yussouff bifu…
Theory of Handedness Selection in Helices of Chiral Polymers and Biopolymers
Biman Bagchi
Helices are among the most common ordered structures in biological and synthetic polymers, but their formation involves more than local conformational preference. A finite helix mu…
Living Helices in Fluctuating Polymer Chains: Cooperative Nucleation, Dynamics, and Lifetime
Biman Bagchi
Helical segments in polymer chains are often transient, finite, and dynamically evolving, yet their origin and stability remain incompletely understood. Here we develop a minimal c…
Dynamics of Nonequilibrium Dimerization of Model Polymer Chains
Sangita Mondal, Ved Mahajan, Biman Bagchi
Dimerization and subsequent aggregation of polymers and biopolymers often occur under nonequilibrium conditions. When the initial state of the polymer is not collapsed or the final…
The Hydrophobic Interaction Induced Strengthening of Hydrogen Bond in Water-DMSO Binary Mixture
Sangita Mondal, Biman Bagchi
The lifetime of a hydrogen bond between water and dimethyl sulfoxide (DMSO) is found to be considerably longer than that between two water molecules in the neat water. This is coun…