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Nonmutual torques and the unimportance of motility for long-range order in two-dimensional flocks
Lokrshi Prawar Dadhichi, Jitendra Kethapelli, Rahul Chajwa +2
As the constituent particles of a flock are polar and in a driven state, their interactions must, in general, be fore-aft asymmetric and non-reciprocal. Within a model that explici…
Omnidirectional transport and navigation of Janus particles through a nematic liquid crystal film
Dinesh Kumar Sahu, Swapnil Kole, Sriram Ramaswamy +1
We create controllable active particles in the form of metal-dielectric Janus colloids which acquire motility through a nematic liquid crystal film by transducing the energy of an…
Inertia drives a flocking phase transition in viscous active fluids
Rayan Chatterjee, Navdeep Rana, R. Aditi Simha +2
How fast must an oriented collection of extensile swimmers swim to escape the instability of viscous active suspensions? We show that the answer lies in the dimensionless combinati…
Stress Fluctuations in Transient Active Networks
Daniel Goldstein, Sriram Ramaswamy, Bulbul Chakraborty
Inspired by experiments on dynamic extensile gels of biofilaments and motors, we propose a model of a network of linear springs with a kinetics consisting of growth at a prescribed…
Pairing, waltzing and scattering of chemotactic active colloids
Suropriya Saha, Sriram Ramaswamy, Ramin Golestanian
An interacting pair of chemotactic (anti-chemotactic) active colloids, that can rotate their axes of self-propulsion to align {parallel (anti-parallel)} to a chemical gradient, sho…