Spreading on Liquids: Effect of Surface Tension Sinks on the Behavior of Stagnant Liquid Layers

Visualization and modeling of the colonization dynamics of a bioluminescent bacterium in variably saturated, translucent quartz sand

“…Movement of cells and biosurfactants toward air-water interfaces is controlled by particle hydrophobicity (and/or chemotaxis of motile cells), while propagation along the interfaces is controlled by electrostatic repulsion forces and microscopic (sub-pore scale) turbulence that results in the so-called Marangoni effect [1]. Data presented by Ruckenstein et al [30] indicate that surfactants can spread along gas-liquid interfaces at rates of tens of cm per second. This type of surface phenomenon is difficult to represent accurately using continuum models of flow and transport, but could possibly account, at least in part, for the results that were observed in the experiment.…”

Surfactant effects on absorption in the presence of induced interfacial turbulence

“…This artificially induced interfacial turbulence is known to effectively enhance the rate of mass transfer across the interface. Reviews of this subject are available (Ruckenstein et al, 1992;Lu et al, 1997).…”