Impact of energy dissipation on interface shapes and on rates for dewetting from liquid substrates.

ABSTRACT: We revisit the fundamental problem of liquid-liquid dewetting and perform a detailed comparison of theoretical predictions based on thin-film models with experimental measurements obtained by atomic force microscopy. Specifically, we consider the dewetting of a liquid polystyrene layer from a liquid polymethyl methacrylate layer, where the thicknesses and the viscosities of both layers are similar. Using experimentally determined system parameters like viscosity and surface tension, an excellent agreement of experimentally and theoretically obtained rim profile shapes are obtained including the liquid-liquid interface and even dewetting rates. Our new energetic approach additionally allows to assess the physical importance of different contributions to the energy-dissipation mechanism, for

SUBMITTER: Peschka D 

PROVIDER: S-EPMC6125481 | biostudies-literature | 2018 Sep

REPOSITORIES: biostudies-literature