Abstract
Depositing and obtaining liquid films of uniform thickness is a problem integral to numerous applications that require multilayer films where each layer has distinct properties. Through a lubrication-theory-based model, this work studies the mechanisms that may initiate dewetting in miscible two-layer two-component films. Numerical solutions reveal that disparities in initial solute concentration between the film layers couple with circulatory flows to produce significant film-height nonuniformities. Several scaling relationships are developed to shed light on the underlying physical mechanisms.
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