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Morphologies And Kinetics Of A Dewetting Ultrathin Solid Film

机译：润湿超薄固体膜的形貌和动力学

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摘要

The surface evolution model based on a geometric partial differential equation is used to numerically study the kinetics of dewetting and the dynamic morphologies for the localized pinhole defect in the surface of an ultrathin solid film with the strongly anisotropic surface energy. Depending on the parameters such as the initial depth and width of the pinhole, the strength of the attractive substrate potential and the strength of the surface-energy anisotropy, the pinhole may either extend to the substrate and thus rupture the film, or evolve to the quasiequilibrium shape while the rest of the film surface undergoes a phase separation into a hill-and-valley structure followed by coarsening. Emergence of the quasiequilibrium shape and the termination of a dewetting are associated with the faceting of the pinhole tip. Overhanging (nongraph) morphologies are possible for deep, narrow (slitlike) pinholes.
机译：利用基于几何偏微分方程的表面演化模型，对具有强各向异性表面能的超薄固体膜表面的局部湿孔缺陷进行了反润湿动力学和动力学形态的数值研究。取决于诸如针孔的初始深度和宽度，有吸引力的衬底电势的强度以及表面能各向异性的强度之类的参数，针孔可能会延伸到衬底并因此使膜破裂，或者演变成薄膜。准平衡形状，而其余膜表面经历相分离成丘陵和谷状结构，然后变粗。准平衡形状的出现和去湿的终止与针孔尖端的刻面有关。对于深，窄（狭缝状）的针孔，可能会出现悬垂（无图）形态。

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