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Pattern formation in chemically interacting active rotors with self-propulsion
(Royal Society of ChemistrySoft Matter, 2016-09-21)
We demonstrate that active rotations in chemically signalling particles, such as autochemotactic $\textit{E. coli}$ close to walls, create a route for pattern formation based on a nonlinear yet deterministic instability ...
Light-induced self-assembly of active rectification devices.
(Science advances, 2016-04)
Unsteady flow and particle migration in dense, non-Brownian suspensions
(AIPJournal of Rheology, 2016)
We present experimental results on dense corn-starch suspensions as examples of non-Brownian, nearly-hard particles that undergo continuous and discontinuous shear thickening (CST and DST) at intermediate and high densities ...
How far from equilibrium is active matter?
(American Physical SocietyPhysical Review Letters, 2016)
Active matter systems are driven out of thermal equilibrium by a lack of generalized Stokes-Einstein relation between injection and dissipation of energy at the microscopic scale. We consider such a system of interacting ...
Tunable shear thickening in suspensions
(National Academy of SciencesProceedings of the National Academy of Sciences, 2016-09-12)
Shear thickening, an increase of viscosity with shear rate, is a ubiquitous phenomenon in suspended materials that has implications for broad technological applications. Controlling this thickening behavior remains a major ...