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Transport of a passive scalar in wide channels with surface topography
James V. Roggeveen, Howard A. Stone, Christina Kurzthaler
We generalize classical dispersion theory for a passive scalar to derive an asymptotic long-time convection-diffusion equation for a solute suspended in a wide, structured channel…
Diffusiophoresis in the presence of a pH gradient
Suin Shim, Janine K. Nunes, Guang Chen +1
Diffusiophoresis is the spontaneous motion of particles under gradients of solutes. In electrolyte-driven diffusiophoresis, the zeta potential of the particles is an important surf…
Microswimmers near corrugated, periodic surfaces
Christina Kurzthaler, Howard A. Stone
We explore hydrodynamic interactions between microswimmers and corrugated, or rough, surfaces, as found often in biological systems and microfluidic devices. Using the Lorentz reci…
Stochastic Theory of the Size Distribution of Raindrops
Maksim Mezhericher, Howard A. Stone
For over a century, raindrop size distributions have been a subject of extensive scientific study, typically described by models including the Marshall-Palmer exponential equation,…
Possible, Impossible, and Expected Diameters and Production Rates of Droplets in Aerosols and Sprays
Maksim Mezhericher, Howard A. Stone
Liquid atomization processes generating sprays and aerosols of droplets are used in many delivery and coating systems involving pure solvents, solutions, and suspensions. In our re…
Flow rate-pressure drop relation for deformable channels via fluidic and elastic reciprocal theorems
Evgeniy Boyko, Howard A. Stone, Ivan C. Christov
Viscous flows through configurations manufactured from soft materials apply both pressure and shear stress at the solid-liquid interface, leading to deformation of the cross-sectio…