A new approach to studying active suspensions is presented. They exhibit a specific behavior pattern, sometimes referred as turbulence. Starting from first principles, we establish description for an suspension, consisting of Newtonian fluid and Janus particles. The phase described by Navier–Stokes equations the particles Newton–Euler equations. level set used separate two phases, well-known re...

Suspensions of active particles, such as motile microorganisms and artificial microswimmers, are known to undergo a transition to complex large-scale dynamics at high enough concentrations. While a number of models have demonstrated that hydrodynamic interactions can in some cases explain these dynamics, collective motion in experiments is typically observed at such high volume fractions that s...

BACKGROUND Levetiracetam is widely used as adjunctive therapy in the treatment of partial-onset seizures, myoclonic seizures, primary generalized tonic-clonic seizures, and idiopathic generalized epilepsy in the community and in hospital. However, no convenient, easy-to-swallow dosage form is commercially available in Canada. Moreover, no stability data are available for this antiepileptic prep...

Charge-stabilized colloidal suspensions can be conveniently described by formally reducing the macroion-microion mixture to an equivalent one-component system of pseudo-particles. Within this scheme, the utility of a linear response approximation for deriving effective interparticle interactions has been demonstrated [M. J. Grimson and M. Silbert, Mol. Phys. 74, 397 (1991)]. Here the response a...

The Glasgow group is involved in the construction of the GEO600 interferometer as well as in R&D activity on technology for advanced gravitational wave detectors. GEO600 will be the first GW detector using quasimonolithic silica suspensions in order to decrease thermal noise significantly with respect to steel wire suspensions. The results concerning GEO600 suspension mounting and performance w...

In this work, Einstein’s formula for the viscosity of suspensions is revised to include effect of particle interactions. The revision is based on assumption of linear behavior of particle interactions with distance between particles. The resulting formula is tested over a range of particle size and concentrations. Good agreement is attained between theory and previously published measurements.