Abstract
Classically, wetting phenomena prevent any experimental analysis of the intrinsic kinetics of phase-separating liquids in reduced geometry. We investigate this issue using a cw laser wave to quench a liquid mixture inside the beam (absence of wetting) and to trap the generated droplets (absence of droplet flow). The Gaussian wave behaves as a box with ``soft walls'' in which the diffusional growth of a single droplet can be analyzed during the crossover between the bulk behavior and its modification induced by finite-size effects. The resulting slowing down is reported and a model which describes these behaviors is presented.
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