Medical micro/nanorobots have received tremendous attention over the past decades owing
to their potential to be navigated into hard-to-reach tissues for a number of biomedical …

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 …

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 locomotion of microorganisms and spermatozoa in complex viscoelastic fluids is of
critical importance in many biological processes such as fertilization, infection, and biofilm …

Run-and-tumble motility is widely used by swimming microorganisms including numerous
prokaryotic and eukaryotic organisms. Here, we experimentally investigate the run-and …

We experimentally investigate active motion of spherical Janus colloidal particles in a
viscoelastic fluid. Self-propulsion is achieved by a local concentration gradient of a critical …

We review recent work on active colloids or swimmers, such as self-propelled
microorganisms, phoretic colloidal particles, and artificial micro-robotic systems, moving in …

We report the emergence of large zigzag bands in a population of reversibly actuated
magnetic rotors that behave as active shakers, namely squirmers that shake the fluid around …

The motility of microorganisms is influenced greatly by their hydrodynamic interactions with
the fluidic environment they inhabit. We show by direct experimental observation of the bi …

We study the collective motion of a suspension of rodlike microswimmers in a two-
dimensional film of viscoelastic fluids. We find that the fluid elasticity has a small effect on a …