Soft slender structures are ubiquitous in natural and artificial systems, in active and passive
settings and across scales, from polymers and flagella, to snakes and space tethers. In this …

In swimming microorganisms and the cell cytoskeleton, inextensible fibers resist bending
and twisting, and interact with the surrounding fluid to cause or resist large-scale fluid …

Slender fibres are ubiquitous in biology, physics and engineering, with prominent examples
including bacterial flagella and cytoskeletal fibres. In this setting, slender body theories …

Single-flagellated bacteria propel themselves by rotating a flagellar motor, translating
rotation to the filament through a compliant hook and subsequently driving the rotation of the …

Multiflagellated bacteria such as E. coli exploit the polymorphic transformations of helical
flagella to explore their fluid environment. In these bacteria, a sequence of polymorphic …

The rotation of bacterial flagella driven by rotary motors enables the cell to swim through
fluid. Bacteria run and reorient by changing the rotational direction of the motor for survival …

We investigate three-dimensional flagellar swimming in a fluid with a sparse network of
stationary obstacles or fibres. The Brinkman equation is used to model the average fluid flow …

Abstract Changes in calcium concentration along the sperm flagellum regulate sperm
motility and hyperactivation, characterized by an increased flagellar bend amplitude and …

The twisting and writhing of a cell body and associated mechanical stresses is an
underappreciated constraint on microbial self-propulsion. Multi-flagellated bacteria can even …

Bacteria such as Vibrio alginolyticus swim through a fluid by utilizing the rotational motion of
their helical flagellum driven by a rotary motor. The flagellar motor is embedded in the cell …