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An Isaac Newton Institute Workshop

Pattern Formation in Fluid Mechanics

Dewetting Patterns

Author: Pismen, L (Israel Institute of Technology)

Abstract

Formation and evolution of dewetting patterns is governed by fluid-substrate interactions, fluid flow, and interphase transport. A thin film dewetting the substrate leaves a pattern of droplets or "pancakes" separated by ultrathin precursor layer. Further ripening process involving growth/decay and motion of droplets or pancake ridges is dominated by interactions mediated by the precursor. Ripening can be slowed down by evaporation and arrested in non-equilibrium setting due to Marangoni effect.