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Counterion desorption and globule-coil transition of a polyelectrolyte under tension
Ajay S. Panwar, Mark A. Kelly, Buddhapriya Chakrabarti +1
We explore the mechanical response of a single polyelectrolyte chain under tension in good and poor solvents using a combination of simulation and theory. In poor solvents, where t…
Shear Unzipping of DNA
Buddhapriya Chakrabarti, David R. Nelson
We study theoretically the mechanical failure of a simple model of double stranded DNA under an applied shear. Starting from a more microscopic Hamiltonian that describes a sheared…
Escape configuration lattice near the nematic-isotropic transition: Tilt analogue of blue phases
Buddhapriya Chakrabarti, Yashodhan Hatwalne, N. V. Madhusudana
We predict the possible existence of a new phase of liquid crystals near the nematic-isotropic () transition. This phase is an achiral, tilt-analogue of the blue phase and is…
The nonlinear elasticity of an -helical polypeptide: Monte Carlo studies
Buddhapriya Chakrabarti, Alex J. Levine
We perform Monte Carlo simulations to study the elastic properties of the helix-coil worm-like chain model of alpha-helical polypeptides. In this model the secondary structure ente…
Routes to spatiotemporal chaos in the rheology of nematogenic fluids
Moumita Das, Buddhapriya Chakrabarti, Chandan Dasgupta +2
With a view to understanding the ``rheochaos'' observed in recent experiments in a variety of orientable fluids, we study numerically the equations of motion of the spatiotemporal…
Spatiotemporal rheochaos in nematic hydrodynamics
Buddhapriya Chakrabarti, Moumita Das, Chandan Dasgupta +2
Motivated by the observation of rheochaos in sheared wormlike micelles [Bandyopadhyay et al., Phys. Rev. Lett, 84 2022, (2000); Europhys. Lett. 56, 447 (2001); Pramana 53, 223 (199…