Background: The “streamline flow” of the portal vein (PV) is a controversial yet well-known
theory presented almost 125 years ago. It states that blood from the superior mesenteric vein …

In this paper, we develop a theory to capture Taylor dispersion and concentration profiles of
a solute band transporting in a circular capillary in the presence of a background active fluid …

Dispersion of substances with reactive boundaries is relevant to a wide range of chemical,
biological, and geophysical processes. A supplied crossflow, or equivalently sedimentation …

Thin phytoplankton layers with vertically compressed structures found in stratified lakes and
coastal water bodies have been a hot-spot in marine science and fluid mechanics. Although …

The dispersive spreading of microscopic particles in shear flows is influenced both by
advection and thermal motion. At the nanoscale, interactions between such particles and …

In quiescent water, gyrotactic micro-swimmers swim upward on average. This anti-gravity
swimming behavior is usually thought to be caused by micro-swimmers' bottom-heaviness …

At low Reynolds numbers, axisymmetric ellipsoidal particles immersed in a shear flow
undergo periodic tumbling motions known as Jeffery orbits, with the orbit determined by the …

Shape measurement of single nanoparticles in fluids is an outstanding challenge with
applications in characterizing synthetic functional nanoparticles and in early warning …

Shear-induced migration of elongated micro-swimmers exhibiting anisotropic Brownian
diffusion at a population scale is investigated analytically in this work. We analyse the steady …

External flows, such as shear flow, add directional biases to particle motion, introducing
anisotropic behavior into the system. Here, we explore the non-equilibrium dynamics that …