On the dewetting of liquefied metal nanostructures
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Direct numerical simulations of liquefied metal nanostructures dewetting a substrate are carried out. Full three-dimensional Navier–Stokes equations are solved and a volume-of-fluid method is used for tracking and locating the interface. Substrate wettability is varied to study the influence of the solid–liquid interaction. The effects of initial geometry on the retraction dynamics is numerically investigated. It is shown that the dewetting velocity increases with increases in the contact angle and that the retraction dynamics is governed by an elaborate interplay of initial geometry, inertial and capillary forces, and the dewetting phenomena. Numerical results are presented for the dewetting of nanoscale Cu and Au liquefied structures on a substrate.
KeywordsDewetting Liquefied metal nanostructures Navier–Stokes Surface tension Volume-of-fluid
The results presented here are a part of a larger research project involving Kyle Mahady (New Jersey Institute of Technology), Javier Diez and Alejandro Gonzalez from Universidad Nacional del Centro de la Provincia de Buenos Aires (Argentina), and Jason Fowlkes, Miguel Fuentes-Cabrera, and Philip Rack from Oak Ridge National Laboratory and the University of Tennessee. We acknowledge the extensive discussions with all members of the research team. This work was supported in part by National Science Foundation Grants DMS-1320037 (S.A.) and CBET-1235710 (L.K.).
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