2.2k citations · 14.6k across the 219 of their papers we have counts for
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Chemotactic self-caging in active emulsions
Babak Vajdi Hokmabad, Suropriya Saha, Jaime Agudo-Canalejo +2
A common feature of biological self-organization is how active agents communicate with each other or their environment via chemical signaling. Such communications, mediated by self…
Long-range fluctuation-induced forces in driven electrolytes
Saeed Mahdisoltani, Ramin Golestanian
We study the stochastic dynamics of an electrolyte driven by a uniform external electric field and show that it exhibits generic scale invariance despite the presence of Debye scre…
Optimal navigation strategies for microswimmers on curved manifolds
Lorenzo Piro, Evelyn Tang, Ramin Golestanian
Finding the fastest path to a desired destination is a vitally important task for microorganisms moving in a fluid flow. We study this problem by building an analytical formalism f…
Magnetic microswimmers exhibit Bose-Einstein-like condensation
Fanlong Meng, Daiki Matsunaga, Benoît Mahault +1
We study an active matter system comprised of magnetic microswimmers confined in a microfluidic channel and show that it exhibits a new type of self-organized behavior. Combining a…
Topology protects chiral edge currents in stochastic systems
Evelyn Tang, Jaime Agudo-Canalejo, Ramin Golestanian
Constructing systems that exhibit time-scales much longer than those of the underlying components, as well as emergent dynamical and collective behavior, is a key goal in fields su…
Minimum Dissipation Theorem for Microswimmers
Babak Nasouri, Andrej Vilfan, Ramin Golestanian
We derive a theorem for the lower bound on the energy dissipation rate by a rigid surface-driven active microswimmer of arbitrary shape in a fluid at low Reynolds number. We show t…
Designing metachronal waves of cilia
Fanlong Meng, Rachel R. Bennett, Nariya Uchida +1
On surfaces with many motile cilia, beats of the individual cilia coordinate to form metachronal waves. We present a theoretical framework that connects the dynamics of an individu…
Exact axisymmetric interaction of phoretically active Janus particles
Babak Nasouri, Ramin Golestanian
We study the axisymmetric interaction of two chemically active Janus particles. By relying on the linearity of the field equations and symmetry arguments, we derive a generic solut…
Scalar Active Mixtures: The Non-Reciprocal Cahn-Hilliard Model
Suropriya Saha, Jaime Agudo-Canalejo, Ramin Golestanian
Pair interactions between active particles need not follow Newton's third law. In this work we propose a continuum model of pattern formation due to non-reciprocal interaction betw…
Bose-Einstein-like Condensation due to Diffusivity Edge under Periodic Confinement
Benoît Mahault, Ramin Golestanian
A generic class of scalar active matter, characterized at the mean field level by the diffusivity vanishing above some threshold density, was recently introduced [Golestanian R 201…
Degenerate states, emergent dynamics and fluid mixing by magnetic rotors
Takuma Kawai, Daiki Matsunaga, Fanlong Meng +2
We investigate the collective motion of magnetic rotors suspended in a viscous fluid under an uniform rotating magnetic field. The rotors are positioned on a square lattice, and lo…
Stochastic effects on the dynamics of an epidemic due to population subdivision
Philip Bittihn, Ramin Golestanian
Using a stochastic Susceptible-Infected-Removed (SIR) meta-population model of disease transmission, we present analytical calculations and numerical simulations dissecting the int…
Exact phoretic interaction of two chemically-active particles
Babak Nasouri, Ramin Golestanian
We study the nonequilibrium interaction of two isotropic chemically-active particles taking into account the exact near-field chemical interactions as well as hydrodynamic interact…