Differently from passive Brownian particles, active particles, also known as self-propelled
Brownian particles or microswimmers and nanoswimmers, are capable of taking up energy …

Bacteria predate plants and animals by billions of years. Today, they are the world's smallest
cells, yet they represent the bulk of the world's biomass and the main reservoir of nutrients …

Fluid dynamics plays a crucial role in many cellular processes, including the locomotion of
cells such as bacteria and spermatozoa. These organisms possess flagella, slender …

The swimming trajectories of self-propelled organisms or synthetic devices in a viscous fluid
can be altered by hydrodynamic interactions with nearby boundaries. We explore a …

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 …

We review the literature on swimming in complex fluids. A classification is proposed by
comparing the length-and timescales of a swimmer with those of nearby obstacles …

The hydrodynamics of an archetypal low-Reynolds number swimmer, called “squirmer,”
near a wall has been numerically studied. For a single squirmer, depending on the …

Schooling, an archetype of collective behaviour, emerges from the interactions of fish
responding to sensory information mediated by their aqueous environment. A fundamental …

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 …

The emergence of coherent structures, large-scale flows and correlated dynamics in
suspensions of motile particles such as swimming micro-organisms or artificial …