Abstract
The phenomenon of thermocapillary trapping of gas bubbles by a laser beam in a layer of absorbing liquid confined between two plates is demonstrated. In this system, the laser beam is capable of trapping gas bubbles occurring at a distance of up to ten beam diameters. Acceleration of a trapped bubble was observed, and the bubble velocity was determined as a function of the distance to the beam projection on the layer plane. The force developed by a thermocapillary trap exceeds 10 nN.
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Original Russian Text © N.A. Ivanova, B.A. Bezuglyĭ, 2006, published in Pis’ma v Zhurnal Tekhnicheskoĭ Fiziki, 2006, Vol. 32, No. 19, pp. 66–71.