Bacteria are among the oldest and most abundant species on Earth. Bacteria successfully
colonize diverse habitats and play a significant role in the oxygen, carbon, and nitrogen …

The diversity of the morphologies, propulsion mechanisms, flow environments, and
behaviors of planktonic microorganisms has long provided inspiration for fluid physicists …

In contexts such as suspension feeding in marine ecologies there is an interplay between
Brownian motion of nonmotile particles and their advection by flows from swimming …

In the past decade, the volvocine green algae, spanning from the unicellular
Chlamydomonas to multicellular Volvox, have emerged as model organisms for a number of …

In order to understand the rheological and transport properties of a suspension of swimming
micro-organisms, it is necessary to analyse the fluid-dynamical interaction of pairs of such …

The spherical alga Volvox swims by means of flagella on thousands of surface somatic cells.
This geometry and its large size make it a model organism for studying the fluid dynamics of …

Active suspensions, such as suspensions of self-propelled microorganisms and related
synthetic microswimmers, are known to undergo complex dynamics and pattern formation as …

Phoretic self-propulsion is a unique example of force-and torque-free motion on small
scales. The classical framework describing the flow field around a particle swimming by self …

We use numerical simulations to address locomotion at zero Reynolds number in
viscoelastic (Giesekus) fluids. The swimmers are assumed to be spherical, to self-propel …

This review explores the intersection between two important fields of colloid and interface
science–that of active colloidal particles and of (passive) particles at fluid-fluid interfaces …