We research theoretical problems in the physics of soft solids and complex fluids using a combination of analytical and numerical methods. Current research interests include the hydrodynamics of active particles, the dynamics of topological defects in liquid crystals and cold atoms, the non-linear dynamics of filaments, membranes and interfaces, and glassiness in disordered solids.
We also research methods for separating "signal" from "noise" in data using statistical learning and Bayesian inference. We use these methods to analyse stochastic processes in optical tweezing and microrheology, in single and few molecule enzyme kinetics, and in epidemiology.
S. Ghose and R. Adhikari, "Irreducible representations of oscillatory and swirling flows in active soft matter, " Physical Review Letters , vol 112, p.118012, 2014.
A. Laskar, R. Singh, S. Ghose, G. Jayaraman, P. B. Sunil Kumar and R. Adhikari, "Hydrodynamic instabilities provide a generic route to spontaneous biomimetic oscillations in chemomechanically active filaments," Nature Scientific Reports, 2013.
G. Jayaraman, S. Ramachandran, S. Ghose, A. Laskar, P. B. Sunil Kumar, and R. Adhikari, "Autonomous motility of active filaments due to spontaneous flow symmetry breaking," Physical Review Letters, vol. 109, p. 158302, 2012.
S. Saha, S. Ghose, R. Adhikari, and A. Dua, "Non-renewal statistics in the catalytic activity of enzyme molecules at mesoscopic concentrations," Physical Review Letters, vol. 107, p. 21830, 2011.
R. Nash, R. Adhikari, J. Tailleur, and M. E. Cates, "Run-and-tumble particles with hydrodynamics: sedimentation, trapping, and upstream swimming," Physical Review Letters, vol. 104, p. 258101, 2010.
R. P. N. Rao, N. Yadav, M. N. Vahia, H. Joglekar, R. Adhikari, and I. Mahadevan, "Entropic evidence for linguistic structure in the Indus script.," Science, vol. 324, iss. 5931, p. 1165, 2009.
R. P. N. Rao, N. Yadav, M. N. Vahia, H. Joglekar, R. Adhikari, and I. Mahadevan, "A Markov model of the Indus script.," Proceedings of the National Academy of Sciences, vol. 106, iss. 33, p. 13685, 2009.
P. Stansell, K. Stratford, J. -C. Desplat, R. Adhikari, and M. E. Cates, "Nonequilibrium steady states in sheared binary fluids," Physical Review Letters, vol. 96, p. 085701, 2006
R. Adhikari, K. Stratford, M. E. Cates, and A. J. Wagner, "Fluctuating lattice Boltzmann," Europhysics Letters, vol. 71, iss. 3, pp. 473-479, 2005.
K. Stratford, R. Adhikari, I. Pagonabarraga, J-C. Desplat, and M. E. Cates, "Colloidal jamming at interfaces: a route to fluid-bicontinuous gels.," Science, vol. 309, iss. 5744, p. 2198, 2005.