The dynamical perspectives of bubble in a liquid droplet on smooth solid substrate can be revealed by investigating interfacial self-assembly phenomena. Moreover, the complexity in such system can be scaled down into a transparent immobile droplet. Here we present the dynamical behaviour of internal microbubbles through coalescence and implosion near the edge of the droplet. The aggregation density of microbubbles near the rim is greater than the central region corresponding to the dynamical random behaviour of the droplet marked along the triple phase contact line. This understanding ascribes distinctive growth of internal microbubbles followed by coalescence and the diameter of the bubble shrinks with time evolution leading to implosion.
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