66 citations · 293 across the 22 of their papers we have counts for
22 papers
Dynamics and stability of inertial flexible chains under follower activity
Sattwik Sadhu, Nitin Kriplani, Raghunath Chelakkot
The dynamics of flexible polymers and chains under follower activity is known to produce diverse nonequilibrium states. A prominent feature of such systems is the emergence of peri…
Modulating hydrodynamic flow by modifying the active patch of a colloid
Om Vandra, Suhal Siva Ratan T. N., Hemant Giri +4
We have developed a simulation model to study the hydrodynamic flow fields around Brownian colloidal particles with an active surface patch. Hydrodynamics is introduced by modeling…
Dynamics of Marangoni-Driven Elliptical Janus Particles
Pabitra Masanta, Ratan Sarkar, Punit Parmananda +1
We investigate the spontaneous motion of an elliptical Janus particle, driven by Marangoni forces, on a water surface to understand how particle shape and size influence its dynami…
Active chain spirograph: Dynamic patterns formed in extensible chains due to follower activity
Sattwik Sadhu, Nitin Kriplani, Anirban Sain +1
Follower activity results in a large variety of conformational and dynamical states in active chains and filaments. These states are formed due to the coupling between chain geomet…
Active wetting transitions induced by rotational noise at solid interfaces
Suchismita Das, Raghunath Chelakkot
We investigate the wetting transitions displayed by the collection of active Brownian particles (ABPs) confined within rigid, impenetrable, flat walls. In our computational study u…
Kinetically arrested clusters in active filament arrays
Sonu Karayat, Prashant K. Purohit, L. Mahadevan +2
We use Brownian dynamics simulations and theory to study the over-damped spatiotemporal dynamics and pattern formation in a fluid-permeated array of equally spaced, active, elastic…
Percolation of nonequilibrium assemblies of colloidal particles in active chiral liquids
Pragya Kushwaha, Sayan Maity, Anjaly S. Menon +2
The growing interest in the non-equilibrium assembly of colloidal particles in active liquids is driven by the motivation to create novel structures endowed with tunable properties…
Percolation transitions in the binary mixture of active Brownian particles with different softness
Monika Sanoria, Raghunath Chelakkot, Amitabha Nandi
Homogeneous active Brownian particle (ABP) systems with purely repulsive interactions are considered to have simple phase behavior, but various physical attributes of active entiti…
Non-planar snake gaits: from Stigmatic-starts to Sidewinding
N. Charles, R. Chelakkot, M. Gazzola +2
Of the vast variety of animal gaits, one of the most striking is the non-planar undulating motion of a sidewinder. But non-planar gaits are not limited to sidewinders. Here we repo…
Percolation transition in phase separating active fluid
Monika Sanoria, Raghunath Chelakkot, Amitabha Nandi
The motility-induced phase separation exhibited by active particles with repulsive interactions is well known. We show that the interaction softness of active particles destabilize…
Cluster and conquer: The morphodynamics of invasion of a compliant substrate by active rods
Mohammad Imaran, Mandar Inamdar, Ranganathan Prabhakar +1
The colonisation of a soft passive material by motile cells such as bacteria is common in biology. The resulting colonies of the invading cells are often observed to exhibit intric…
Influence of interaction softness in phase separation of active particles
Monika Sanoria, Raghunath Chelakkot, Amitabha Nandi
Using a minimal model of active Brownian discs, we study the effect of a crucial parameter, namely the softness of the inter-particle repulsion, on motility-induced phase separatio…
Translational and rotational dynamics of a self-propelled Janus probe in crowded environments
Ligesh Theeyancheri, Subhasish Chaki, Nairhita Samanta +3
We computationally investigate the dynamics of a self-propelled Janus probe in crowded environments. The crowding is caused by the presence of viscoelastic polymers or non-viscoela…
Morphological transitions of active Brownian particle aggregates on porous walls
Suchismita Das, Raghunath Chelakkot
Motility-induced wall aggregation of active Brownian particles (ABPs) is a well-studied phenomenon. Here, we study the aggregation of ABPs on porous walls, which allows the particl…
Aggregate morphology of active Brownian particles on porous, circular walls
Suchismita Das, Sounok Ghosh, Raghunath Chelakkot
We study the motility-induced aggregation of active Brownian particles (ABPs) on a porous, circular wall. We observe that the morphology of aggregated dense-phase on a static wall…
Beating to rotational transition of a clamped active ribbon-like filament
Shalabh K. Anand, Raghunath Chelakkot, Sunil P. Singh
We present a detailed study of a clamped ribbon-like filament under a compressive active force using Brownian dynamics simulations. We show that a clamped ribbon-like filament is a…
Persistence of activity in noisy motor-filament assemblies
Raghunath Chelakkot, Arvind Gopinath, L. Mahadevan
Long, elastic filaments cross-linked and deformed by active molecular motors occur in various natural settings. The overall macroscopic mechanical response of such a composite netw…
Persistence of strain in motor-filament assemblies
Arvind Gopinath, Raghunath Chelakkot, L. Mahadevan
Crosslinked semi-flexible and flexible filaments that are actively deformed by molecular motors occur in various natural settings, such as the ordered eukaryotic flagellum, and the…
Flagellar dynamics of a connected chain of active, Brownian particles
Raghunath Chelakkot, Arvind Gopinath, L. Mahadevan +1
Eukaryotic flagella are active structures with a complex architecture of microtubules, motor proteins and elastic links. They are capable of whiplike motions driven by motors slidi…
Flow-Induced Helical Coiling of Semiflexible Polymers in Structured Microchannels
Raghunath Chelakkot, Roland G. Winkler, Gerhard Gompper
The conformations of semiflexible (bio)polymers are studied in flow through geometrically structured microchannels. Using mesoscale hydrodynamics simulations, we show that the poly…
Semiflexible polymer conformation, distribution and migration in microcapillary flows
Raghunath Chelakkot, Roland G. Winkler, Gerhard Gompper
The flow behavior of a semiflexible polymer in microchannels is studied using Multiparticle Collision Dynamics (MPC), a particle-based hydrodynamic simulation technique. Conformati…
Migration of semiflexible polymers in microcapillary flow
Raghunath Chelakkot, Roland. G. Winkler, Gerhard Gompper
The non-equilibrium structural and dynamical properties of a semiflexible polymer confined in a cylindrical microchannel and exposed to a Poiseuille flow is studied by mesoscale hy…