Topic
Marangoni effect
About: Marangoni effect is a research topic. Over the lifetime, 5336 publications have been published within this topic receiving 98562 citations. The topic is also known as: Gibbs–Marangoni effect.
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TL;DR: In this paper, the stability of the Rayleigh-Taylor instability of a thin liquid film by the Marangoni effect arising from heating of the liquid at the gas-liquid interface in a bilayer setting is investigated.
Abstract: Stabilization of the Rayleigh-Taylor instability of a thin liquid film by the Marangoni effect arising from heating of the liquid at the gas-liquid interface in a bilayer setting is investigated. Solution of time-dependent Navier-Stokes and long-wave evolution equations in both two and three dimensions shows the emergence of nontrivial nonruptured steady states in the system when the applied temperature gradient exceeds a certain critical value.
36 citations
TL;DR: In this article, a new criterion is proposed based on the dynamic Weber number prevailing at the surface conditions; the new parameter seems to fit much better all the available experimental findings obtained so far.
36 citations
TL;DR: In this paper, it was shown that the print layer at the nozzle is formed through streamers of ink, emanating from a central ink band on the nozzle plate, which propagate over a wetting nanofilm of 13nm thickness, directed toward the actuated nozzles.
Abstract: In piezo inkjet printing, nozzle failures are often caused by an ink layer on the nozzle plate. It is experimentally shown that the ink layer at the nozzle is formed through streamers of ink, emanating from a central ink band on the nozzle plate. The streamers propagate over a wetting nanofilm of 13 nm thickness, directed toward the actuated nozzles. The motion of the front end of the streamers follows a power law in time with an exponent ½. The observations are consistent with a surface tension gradient driven flow. The origin of the Marangoni flow is an effective lower surfactant concentration of the ink around the nozzle.
36 citations
TL;DR: A novel thin capsule motor utilizes the Marangoni effect for the solid capsule to run at a water-oil interlayer, which has not been reported previously.
Abstract: A novel thin capsule motor has been described in this report. It utilizes the Marangoni effect for the solid capsule to run at a water–oil interlayer, which has not been reported previously. Intrinsic and environment factors influencing the motion were investigated. It is also possible for the velocity, direction, and start/stop of the motion of the capsule to be manipulated.
36 citations
TL;DR: In this article, two unbalanced forces set up a global flow: surface forces with temperature and gravity, acting upon the density variations with temperature, can be expressed in terms of two nondimensional numbers: the Marangoni number Ma and the Rayleigh number Ra.
Abstract: A fluid layer heated from one side ~and cooled from the opposite! gets into motion, no matter how small the imposed temperature difference DT between the end walls is. Two unbalanced forces set up a global flow. The first one arises from the change of the surface forces with temperature, also called the Marangoni effect. The second one is gravity, acting upon the density variations with temperature. The two main experimental parameters, the temperature difference DT and the depth of the fluid layer h, can be expressed in terms of two nondimensional numbers: the Marangoni number Ma and the Rayleigh number Ra. We use the following definitions for Ra and Ma:
36 citations