57 citations · 218 across the 16 of their papers we have counts for
16 papers
Vanishing of the quantum spin Hall phase in a semi-Dirac Kane Mele model
Sayan Mondal, Saurabh Basu
We study the vanishing of the topological properties of a quantum spin Hall insulator induced by a deformation of the band structure that interpolates between the Dirac and the sem…
Emergence of Dynamical Coherence in a Driven One-dimensional Interacting Rotor Model
Sahithya S Iyer, Sayantan Mondal, Biman Bagchi
In order to understand the dynamics of active matter, we examine a minimalistic model where interacting spins on a one-dimensional lattice are driven by a self-propelled spin at th…
Effect of vibronic relaxation in fluorescence resonance energy transfer: An exact analytical solution
Sangita Mondal, Sayantan Mondal, Kazuhiko Seki +1
Fluorescence resonance energy transfer (FRET) is widely used as a 'spectroscopic ruler' to measure fluctuations in macromolecules because of the strong dependence of the rate on th…
Origin of Multiple Infection Waves in a Pandemic: Effects of Inherent Susceptibility and External Infectivity Distributions
Saumyak Mukherjee, Sayantan Mondal, Biman Bagchi
Two factors that are often ignored but could play a crucial role in the progression of an infectious disease are the distributions of inherent susceptibility () and extern…
Topological phase transition induced by band structure modulation in a Chern insulator
Sayan Mondal, Priyadarshini Kapri, Bashab Dey +2
Here we study the systematic evolution of the topological properties of a Chern insulator in presence of an electronic dispersion that can be tuned smoothly from being Dirac-like t…
Attainment of Herd Immunity: Mathematical Modelling of Survival Rate
Sayantan Mondal, Saumyak Mukherjee, Biman Bagchi
We study the influence of the rate of the attainment of herd immunity (HI), in the absence of an approved vaccine, on the vulnerable population. We essentially ask the question: ho…
Dynamical Theory and Cellular Automata Simulations of Pandemic Spread: Understanding Different Temporal Patterns of Infections
Saumyak Mukherjee, Sayantan Mondal, Biman Bagchi
Here we propose and implement a generalized mathematical model to find the time evolution of population in infectious diseases and apply the model to study the recent COVID-19 pand…
Ice-water Interface: Correlation between Structure and Dynamics
Saumyak Mukherjee, Sayantan Mondal, Biman Bagchi
To comprehend the complexities of the ice-water interface, we perform a study that attempts to correlate the altered dynamics of water to its perturbed structure at, and due to, th…
Altered Dielectric Behaviour, Structure and Dynamics of Nanoconfined Dipolar Liquids: Signatures of Enhanced Cooperativity
Sayantan Mondal, Subhajit Acharya, Biman Bagchi
Spherical confinement can alter the properties of a dipolar fluid in several different ways. In an atomistic molecular dynamics simulation study of two different dipolar liquids (S…
Adverse effect of ethanol on insulin dimer stability
Puja Banerjee, Sayantan Mondal, Biman Bagchi
Alcohol is widely believed to have an effect on diabetes, often considered beneficial in small amounts but detrimental in excess. The reasons are not fully known but questions have…
In search of the origin of long-time power-law decay in DNA solvation dynamics
Saumyak Mukherjee, Sayantan Mondal, Subhajit Acharya +1
Experiments reveal that DNA solvation dynamics (SD) is characterized by multiple time scales ranging from a few ps to hundreds of ns and in some cases even up to microseconds. The…
Towards Understanding the Structure, Dynamics and Bio-activity of Diabetic Drug Metformin
Sayantan Mondal, Rudra N Samajdar, Saumyak Mukherjee +2
Small molecules are often found to exhibit extraordinarily diverse biological activities. Metformin is one of them. It is widely used as anti-diabetic drug for type-two diabetes. I…
Cavity Waters Govern Insulin Association and Release: Inferences from Experimental Data and Molecular Dynamics Simulations
Saumyak Mukherjee, Sayantan Mondal, Ashish Anilrao Deshmukh +2
While a monomer of the ubiquitous hormone insulin is the biologically active form in the human body, its hexameric assembly acts as an efficient storage unit. However, the role of…
On the origin of diverse time scales in the protein hydration layer solvation dynamics: A molecular dynamics simulation study
Sayantan Mondal, Saumyak Mukherjee, Biman Bagchi
In order to inquire the microscopic origin of observed multiple time scales in solvation dynamics we carry out several computer experiments. We perform atomistic molecular dynamics…
Distinguishing dynamical features of water inside protein hydration layer: Distribution reveals what is hidden behind the average
Saumyak Mukherjee, Sayantan Mondal, Biman Bagchi
Since the pioneering works of Pethig, Grant and Wuthrich on protein hydration layer, many studies have been devoted to find out if there are any general and universal characteristi…
Dynamical coupling between protein conformational fluctuation and hydration water: Heterogeneous dynamics of biological water
Sayantan Mondal, Saumyak Mukherjee, Biman Bagchi
We investigate dynamical coupling between water and amino acid side-chain residues in solvation dynamics by selecting residues often used as natural probes, namely tryptophan, tyro…