M. Muthukumar

Interplay of hierarchical dynamics and their microscopic structures of polyampholyte gels and proteins

The paper studies the hierarchical dynamics of polyampholyte gels using dynamic light scattering, identifying a new mode with a stretched exponential decay and linking it to segmental motion and charge balance.

Topologically frustrated dynamics in an uncharged Tetra-PEG gel

The paper investigates non-diffusive topologically frustrated dynamics in an uncharged gel matrix and finds a stretched exponential dynamics with exponent around 1/3.

Stochastic Resonance Behavior of DNA Translocation with an Oscillatory Electric Field

The paper investigates stochastic resonance in DNA translocation through a nanopore under an oscillating electric field, finding non-monotonic translocation time dependence and SR effects for longer DNA.

Nucleotide Dynamics During Flossing of Polycation-DNA-Polycation through a Nanopore using Molecular Dynamics

This paper investigates nucleotide dynamics during DNA translocation through a nanopore under alternating voltage, finding that it increases residence time but introduces stochasticity.

Langevin dynamics simulation of protein dynamics in nanopores at microsecond timescales

This paper develops a Langevin dynamics framework to simulate protein dynamics in nanopores, revealing that small changes in nanopore electrostatic potential significantly affect protein dwell time.

Unfolding of RNA via Translocation Through a Nanopore

This study uses simulations to investigate how RNA hairpin structures affect translocation dynamics through a nanopore, finding voltage-dependent unfolding behavior and structural signatures.

Coupled dynamics of charged macromolecules and counterions mediated by binding enzymes

The paper studies how active coupling from enzyme binding affects polymer dynamics and diffusivity in solution, finding that active fluctuations enhance effective diffusivity.

Voltage-driven polyelectrolyte complexation inside a nanopore

This paper investigates how oppositely charged macromolecules form polyelectrolyte complexes inside a nanopore under an electric field, revealing distinct ionic current signatures and a four-step mechanism for complexation.

Macromolecule Translocation in a Nanopore: Center of Mass Drift-Diffusion over an Entropic Barrier

This paper develops a center of mass diffusion theory for macromolecule translocation through nanopores, connecting theoretical models to experimental and simulation results.