190 citations · 642 across the 13 of their papers we have counts for
13 papers
Evaporation of Active Drops: Dynamics of Punctured Drops and Particle Deposits of Ring Galaxy Patterns
Ghansham Rajendrasingh Chandel, Vishal Sankar Sivasankar, Siddhartha Das
Active drops refer to drops with the ability to self-migrate: these drops typically attain this ability by virtue of containing of active particles that derive energy from their en…
Dynamical Theory of the Inverted Cheerios Effect
Anupam Pandey, Stefan Karpitschka, Luuk A. Lubbers +5
Recent experiments have shown that liquid drops on highly deformable substrates exhibit mutual interactions. This is similar to the Cheerios effect, the capillary interaction of so…
Inverted Cheerios effect: Liquid drops attract or repel by elasto-capillarity
S. Karpitschka, A. Pandey, L. A. Lubbers +5
Solid particles floating at a liquid interface exhibit a long-ranged attraction mediated by surface tension. In the absence of bulk elasticity, this is the dominant lateral interac…
Bacterial floc mediated rapid streamer formation in creeping flows
Mahtab Hassanpourfard, Zahra Nikakhtari, Ranajay Ghosh +4
One of the central puzzles concerning the interaction of low Reynolds number (Re<<1) fluid transport with bacterial biomass is the formation of filamentous structures called stream…
Deformation of an elastic body in low Reynolds number transport: Relevance to biofilm deformation and streamer formation
Nikhil Gupta, Siddhartha Das, Sushanta K. Mitra +1
In this paper, we obtain analytical results for shear stress distributions inside an elastic body placed in a low Reynolds number transport. The problem definition is inspired by a…
Formation and post-formation dynamics of bacterial biofilm streamers as highly viscous liquid jets
Siddhartha Das, Aloke Kumar
It has been recently reported that in presence of low Reynolds number (Re<<1) transport, preformed bacterial biofilms, several hours after their formation, may degenerate in form o…
Drops on soft solids: Free energy and double transition of contact angles
Luuk A. Lubbers, Joost H. Weijs, Lorenzo Botto +3
The equilibrium shape of liquid drops on elastic substrates is determined by minimising elastic and capillary free energies, focusing on thick incompressible substrates. The proble…
Contact angles on a soft solid: from Young's law to Neumann's law
Antonin Marchand, Siddhartha Das, Jacco H. Snoeijer +1
The contact angle that a liquid drop makes on a soft substrate does not obey the classical Young's relation, since the solid is deformed elastically by the action of the capillary…
Capillary Pressure and Contact Line Force on a Soft Solid
Antonin Marchand, Siddhartha Das, Jacco H. Snoeijer +1
The surface free energy, or surface tension, of a liquid interface gives rise to a pressure jump when the interface is curved. Here we show that a similar capillary pressure arises…
Elastocapillary instability under partial wetting conditions: bending versus buckling
Bruno Andreotti, Antonin Marchand, Siddhartha Das +1
The elastocapillary instability of a flexible plate plunged in a liquid bath is analysed theoretically. We show that the plate can bend due to two separate destabilizing mechanisms…
Elastic deformation due to tangential capillary forces
Siddhartha Das, Antonin Marchand, Bruno Andreotti +1
A sessile liquid drop can deform the substrate on which it rests if the solid is sufficiently "soft". In this paper we compute the detailed spatial structure of the capillary force…
Implications of Interactions between Steric Effects and Electrical Double Layer Overlapping Phenomena on Electro-Chemical Transport in Narrow Fluidic Confinements
Siddhartha Das, Suman Chakraborty
In this paper, we study the non-trivial interactions between the ionic Steric effects and Electric Double Layer (EDL) overlap phenomenon on the resultant electro-chemical transport…
Effect of Impurities in Description of Surface Nanobubbles
Siddhartha Das, Jacco H. Snoeijer, Detlef Lohse
Surface nanobubbles emerging at solid-liquid interfaces of submerged hydrophobic surfaces show extreme stability and very small (gas-side) contact angles. In a recent study Ducker…