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Aqueous drops resting on the free surface of fluorocarbon liquid (FC-43) in a spherical mode (a) and lens mode (b).
Schematic of the experimental setup (top). Photographs of initial surfaces of the liquid layer and when the heater is turned on (bottom). (Rise at the top left corner when heater is off, is due to the capillary rise of the meniscus at the solid wall; dashed line shows the undeformed free surface.)
Characteristics of thermocapillary migration of lens-shaped drops away from the heat source (, , , , and ; , , , , and ) (Video 1, enhanced online). [URL: http://dx.doi.org/10.1063/1.3456391.1]10.1063/1.3456391.1
Characteristics of thermocapillary and gravity driven migration of spherical drops toward the source of heat (, , , , and ; , , , , and ) (Video 2, enhanced online). [URL: http://dx.doi.org/10.1063/1.3456391.2]10.1063/1.3456391.2
Comparison of normalized velocity from experiment and theory for (a) partially submerged lens drops and (b) spherical drops.
Physical properties of aqueous droplet and the fluorocarbon carrier liquid.
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