Abstract
The paper considers the coalescence of two bulk nanobubbles with significantly different radii. The study of this issue is of practical importance,since coalescence is an undesirable process: nanobubbles lose their unique properties as they grow larger. In a simplified model of charged nanobubbles based on the energy approach, it is shown that, in contrast to surface nanobubbles , for bulk nanobubbles coalescence can occur at certain values of surface charge density, concentration , and radius ratio.
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