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 …

We have developed a millimeter-scale magnetically driven swimming robot for untethered
motion at mid to low Reynolds numbers. The robot is propelled by continuous undulatory …

Cilia and flagella are hair-like appendages that protrude from the surface of a variety of
eukaryotic cells and deform in a wavelike fashion to transport fluids and propel cells …

Sperm–often considered the most diverse cell type known–present unique challenges for
modeling frameworks. Responsible for fertilizing the egg, sperm are not only necessary for …

Microorganisms such as bacteria often swim in fluid environments that cannot be classified
as Newtonian. Many biological fluids contain polymers or other heterogeneities which may …

Helicobacter pylori swims through mucus gel by generating ammonia that locally neutralizes
the acidic gastric environment, turning nearby gel into a fluid pocket. The size of the fluid …

A key feature of many living systems, such as bacteria and eukaryotic cells, is their ability to
actively self-propel. Indeed, cellular motility underlies numerous critical biological …

Geometric confinements are frequently encountered in the biological world and strongly
affect the stability, topology, and transport properties of active suspensions in viscous flow …

In a seminal paper published in 1951, Taylor studied the interactions between a viscous
fluid and an immersed flat sheet which is subjected to a travelling wave of transversal …

The ciliary locomotion and feeding of an axisymmetric microswimmer in a complex fluid
whose viscosity depends on a surrounding nutrient field are investigated numerically in …