Active nematics is a popular model fluid for active matter. The popularity comes from the fact
that several biological systems involving cells and cytoskeletal elements closely match …

Spontaneous growth of long-wavelength deformations is a defining feature of active liquid
crystals. We investigate the effect of confinement on the instability of 3D active liquid crystals …

We study the structure and dynamics of the interface separating a passive fluid from a
microtubule-based active fluid. Turbulent-like active flows power giant interfacial …

Geometric confinement and topological constraints present promising means of controlling
active materials. By combining analytical arguments derived from the Born-Oppenheimer …

Active nematics can be modeled using phenomenological continuum theories that account
for the dynamics of the nematic director and fluid velocity through partial differential …

We numerically model a two-dimensional active nematic confined by a periodic array of
fixed obstacles. Even in the passive nematic, the appearance of topological defects is …

Two dimensional active fluids display a transition from turbulent to coherent flow upon
decreasing the size of the confining geometry. A recent experiment suggests that the …

Confinement can be used to systematically tame turbulent dynamics occurring in active
fluids. Although periodic channels are the simplest geometries to study confinement …

There is now growing evidence of collective turbulentlike motion of cells in dense tissues.
However, how to control and harness this collective motion is an open question. We …

We present a higher-order convergent numerical solver for active polar hydrodynamics in
three-dimensional domains of arbitrary shape, along with a scalable open-source software …