35 citations · 133 across the 12 of their papers we have counts for
12 papers
Motility and interfacial instability of confined chemically active droplets
Pawan Kumar, Sobiya Ashraf, Naveen Tiwari +2
Microorganisms navigating through narrow spaces encounter significant hydrodynamic challenges. To overcome these constraints and sustain efficient motion, they employ adaptive stra…
Clustering Dynamics of SiO2-Pt Active Janus Colloids
Harishwar Raman, Aniket Shivhare, Amit Kumar +5
Active colloid clustering is central to understanding non-equilibrium self-organization, with implications for programmable active materials and synthetic or biological assemblies.…
Emergence of Order in Chemically Active Droplets: Temporal Dynamics and Collective Behavior
Sobiya Ashraf, Pawan Kumar, Prateek Dwivedi +3
Collective behaviors such as swarming, chemical signaling, and clustering are fundamental to biological microorganisms, enabling hierarchical colony formation, coordinated motion,…
Chemical interactions in active droplets
Prateek Dwivedi, Sobiya Ashraf, Pawan Kumar +2
Interactions among biologically active agents is facilitated by their self-generated chemical and hydrodynamic fields. In order to elucidate the pair-wise interactions between such…
Motility and pair-wise interactions of chemically active droplets in 1-D confinement
Pawan Kumar, Prateek Dwivedi, Sobiya Ashraf +2
Self-propelled droplets serve as ideal model systems to delve deeper into understanding of the motion of biological micro-swimmers by simulating their motility. Biological microorg…
Pair-Interactions of Self-Propelled SiO2-Pt Janus Colloids: Chemically Mediated Interactions
Karnika Singh, Harishwar Raman, Shwetabh Tripathi +3
Driven by the necessity to achieve a thorough comprehension of the bottom-up fabrication process of functional materials, this experimental study investigates the pair-wise interac…
Deforming Active Droplets in Viscoelastic Media
Prateek Dwivedi, Atishay Shrivastava, Naveen Tiwari +2
To mimic the motion of biological swimmers in bodily fluids, a novel experimental system of micellar solubilization driven active droplets in a visco-elastic polymeric solution is…
Mode-Switching of Active Droplets in Macromolecular Solutions
Prateek Dwivedi, Atishay Shrivastava, Dipin Pillai +1
Typical bodily and environmental fluids encountered by biological swimmers consist of dissolved macromolecules such as proteins and polymers, often rendering them non Newtonian. To…
Interaction of Active Janus Particles with Passive Tracers
Karnika Singh, Ankit Yadav, Prateek Dwivedi +1
In this study, we investigated the motion of active SiO2-Pt Janus particles in the 2D bath of smaller silica tracers dispersed in varying areal densities. The effect on the organiz…
Rheotaxis of Active Droplets
Prateek Dwivedi, Atishay Shrivastava, Dipin Pillai +1
Rheotaxis is a well-known phenomenon among microbial organisms and artificial active colloids, wherein the swimmers respond to an imposed flow. We report the first experimental evi…
Solute Induced Jittery Motion of Self-Propelled Droplets
Prateek Dwivedi, Bishwa Ranjan Si, Dipin S. Pillai +1
The intriguing role of the presence of solutes in the activity of a self-propelling droplet is investigated. A system of self-propelling micron sized 4-pentyl-4-biphenylcarbonitril…
Self-Propelled Janus Colloids in Shear Flow
Bishwa Ranjan Si, Preet Patel, Rahul Mangal
To fully harness the potential of artificial active colloids, investigation of their response to various external stimuli including external flow is of great interest. Therefore, i…