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A theoretical description of the shift of the boundary of beaded thin films is given supposing that the boundary motion is initiated by evaporation. In our treatment the role of the surface reaction control (at the perimeters of beads) is also taken into account. It is shown that the shift can be controlled by surface diffusion or by surface reaction: analytical expressions for both cases are derived...
Theoretical description of the time-dependence of the effective thickness of a beaded thin film, h eff , and the average radius of beads, R, is given supposing evaporation. Besides the evaporation and surface diffusion the role of the boundary reaction of exchange of atoms between beads and absorbed surface gas layer is also taken into account. The basic mechanism of the kinetics...
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