244 citations · 1.1k across the 25 of their papers we have counts for
16 papers · 1 filter
Active Hydrodynamics Couples Polymer Organization, Shape Fluctuations, and Motility in Deformable Droplets
Ritu Raj, P. B. Sunil Kumar
We study semiflexible active polymers confined within a soft, deformable droplet suspended in a fluid using dissipative particle dynamics (DPD) simulations. Extensile and contracti…
Rotational dynamics of bound pairs of bacteria-induced membrane tubes
Makarand Diwe, P B Sunil Kumar, Pramod Pullarkat
We present experiments demonstrating tube formation in giant unilamellar vesicles that are suspended in a bath of swimming E. coli bacteria. We chose the lipids such that the bacte…
Collective Vortical Motion and Vorticity Reversals of Self-Propelled Particles on Circularly Patterned Substrates
Haosheng Wen, Yu Zhu, Chenhui Peng +2
The collective behavior of self-propelled particles (SPPs) under the combined effects of a circularly patterned substrate and circular confinement is investigated through coarse-gr…
Kosmotropic effect leads to LCST decrease in thermoresponsive polymer solutions
Swaminath Bharadwaj, P. B. Sunil Kumar, Shigeyuki Komura +1
We study the phenomena of decrease in lower critical solution temperature (LCST) with addition of kosmotropic (order-making) cosolvents in thermoresponsive polymer solutions. A com…
Molecular Structuring and Percolation Transition in Hydrated Sulfonated Poly(ether ether ketone) Membranes
Madhusmita Tripathy, P. B. Sunil Kumar, Abhijit P. Deshpande
The extent of phase separation and water percolation in sulfonated membranes are the key to their performance in fuel cells. Toward this, the effect of hydration on the morphology…
Colloidal transport by active filaments
Raj Kumar Manna, P. B. Sunil Kumar, R. Adhikari
Enhanced colloidal transport beyond the limit imposed by diffusion is usually achieved through external fields. Here, we demonstrate the ballistic transport of a colloidal sphere u…