61 citations · 565 across the 32 of their papers we have counts for
32 papers
Transport and tumbling of polymers in viscoelastic shear flow
Sadhana Singh, R. K. Singh, Sanjay Kumar
Polymers in shear flow are ubiquitous and we study their motion in a viscoelastic fluid under shear. Employing dumbbells as representative, we find that the center of mass motion f…
Dynamics of a polymer under multi-gradient fields
Sadhana Singh, Sanjay Kumar
Effects of multi-gradient fields on the transport of a polymer chain have been investigated by using generalized Langevin dynamics simulations. We observe that the natural frequenc…
Periodically driven DNA: Theory and simulation
Sanjay Kumar, Ravinder Kumar, Wolfhard Janke
We propose a generic model of driven DNA under the influence of an oscillatory force of amplitude and frequency and show the existence of a dynamical transition for a chain…
Rupture of DNA Aptamer: new insights from simulations
Rakesh Kumar Mishra, Shesh Nath, Sanjay Kumar
Base-pockets (non-complementary base-pairs) in a double-stranded DNA play a crucial role in biological processes. Because of thermal fluctuations, it can lower the stability of DNA…
Scaling of hysteresis loop of interacting polymers under a periodic force
Rakesh Kumar Mishra, Garima Mishra, Debaprasad Giri +1
Using Langevin Dynamics simulations, we study a simple model of interacting-polymer under a periodic force. The force-extension curve strongly depends on the magnitude of the ampli…
Statistical Mechanics of DNA unzipping under periodic force: Scaling behavior of hysteresis loop
Sanjay Kumar, Garima Mishra
A simple model of DNA based on two interacting polymers has been used to study the unzipping of a double stranded DNA subjected to a periodic force. We propose a dynamical transiti…