6 papers
Surfactant reorientation under shear: dynamic surface tension and droplet deformation
Alexandra J. Hardy, Abdallah Daddi-Moussa-Ider, Elsen Tjhung
Surfactants are amphiphilic molecules that are generally anisotropic rather than spherical. Their orientation is therefore governed by the interplay between shear-induced reorienta…
Hydrodynamic flows induced by localized torques (rotlets) in wedge-shaped geometries
Abdallah Daddi-Moussa-Ider, Jakob Mihatsch, Michael J. Mitchell +2
Wedge-shaped geometries in low-Reynolds-number flows are of increasing importance, for instance, in the design of microfluidic devices. The corresponding Green's functions describi…
Kinetic theory of coupled binary-fluid-surfactant systems
Alexandra J. Hardy, Samuel Cameron, Steven McDonald +2
We derive a self-consistent hydrodynamic theory of coupled binary-fluid-surfactant systems from the underlying microscopic physics using Rayleigh's variational principle. At the mi…
Exact Results in Stochastic Processes with Division, Death, and Diffusion: Spatial Correlations, Marginal Entropy Production, and Macroscopic Currents
Samuel Cameron, Elsen Tjhung
We consider a generic class of stochastic particle-based models whose state at an instant in time is described by a set of continuous degrees of freedom (e.g. positions), and the l…
Control of active field theories at minimal dissipation
Artur Soriani, Elsen Tjhung, Ãtienne Fodor +1
Advances in experimental techniques enable the precise manipulation of a large variety of active systems, which constantly dissipate energy to sustain nonequilibrium phenomena with…
Hydrodynamic flow field and frictional resistance coefficient of a disk rotating steadily in a compressible fluid layer with odd viscosity on a rigid substrate
Abdallah Daddi-Moussa-Ider, Yuto Hosaka, Elsen Tjhung +1
We analyze the hydrodynamics of a rotating disk in a two-dimensional compressible fluid layer with odd viscosity. Unlike conventional fluids, odd viscosity introduces a radial flow…