82 citations · 564 across the 85 of their papers we have counts for
11 papers · 1 filter
Hydrodynamic theory of flocking at a solid-liquid interface: long range order and giant number fluctuations
Niladri Sarkar, Abhik Basu, John Toner
We construct the hydrodynamic theory of coherent collective motion ("flocking") at a solid-liquid interface. The polar order parameter and concentration of a collection of "active"…
Swarming bottom feeders: Flocking at solid-liquid interfaces
Niladri Sarkar, Abhik Basu, John Toner
We present the hydrodynamic theory of coherent collective motion ("flocking") at a solid-liquid interface, and many of its predictions for experiment. We find that such systems are…
Casimir stresses in active nematic films
Abhik Basu, Jean-Francois Joanny, Frank Jülicher +1
We calculate the Casimir stresses in a thin layer of active fluid with nematic order. By using a stochastic hydrodynamic approach for an active fluid layer of finite thickness ,…
Universal spatio-temporal scaling of distortions in a drifting lattice
Pritha Dolai, Abhik Basu, Aditi Simha
We study the dynamical response to small distortions of a lattice about its uniform state, drifting through a dissipative medium due to an external force, and show, analytically an…
Tethered membranes do not remain flat for strong structural asymmetry
Tirthankar Banerjee, Niladri Sarkar, Abhik Basu
We set up the statistical mechanics for a nearly flat, thermally equilibrated fluid membrane, attached to an elastic network through one of its sides. We predict that the resulting…
Active processes make mixed lipid membranes either flat or crumpled
Tirthankar Banerjee, Abhik Basu
Whether live cell membranes show miscibility phase transitions (MPTs), and if so, how they fluctuate near the transitions remain outstanding unresolved issues in physics and biolog…
Role of interfacial friction for flow instabilities in a thin polar ordered active fluid layer
Niladri Sarkar, Abhik Basu
We construct a generic coarse-grained dynamics of a thin inflexible planar layer of polar-ordered suspension of active particles, that is frictionally coupled to an embedding isotr…
Phase transitions and membrane stiffness in a class of asymmetric heterogeneous fluid membranes
Niladri Sarkar, Abhik Basu
We propose a minimal model for miscibility phase transitions (MPTs) in a class of asymmetric two-component heterogeneous fluid membranes at equilibrium that generically display bot…
Phases and fluctuations in a model for asymmetric inhomogeneous fluid membranes
Niladri Sarkar, Abhik Basu
We propose and analyze a model for phase transitions in an inhomogeneous fluid membrane, that couples local composition with curvature nonlinearly. For asymmetric membranes, our mo…
Generic instabilities in a fluid membrane coupled to a thin layer of ordered active polar fluid
Niladri Sarkar, Abhik Basu
We develop an effective two-dimensional coarse-grained description for the coupled system of a planar fluid membrane anchored to a thin layer of polar ordered active fluid below. T…
Instabilities and diffusion in a hydrodynamic model of a fluid membrane coupled to a thin active fluid layer
Niladri Sarkar, Abhik Basu
We construct a coarse-grained effective two-dimensional (2d) hydrodynamic theory as a theoretical model for a coupled system of a fluid membrane and a thin layer of a polar active…