Surface Instabilities in Granular Matter and Ion-sputtered Surfaces
Date
2004
Authors
Aste, Tomaso
Valbusa, U
Journal Title
Journal ISSN
Volume Title
Publisher
Elsevier
Abstract
We apply a theoretical approach, originally introduced to describe aeolian ripples formation in sandy deserts, to the study of surface instability in ion-sputtered surfaces. The two phenomena are distinct by several orders of magnitudes and by several physical mechanisms, but they obey similar geometrical constraints and therefore they can be described by means of the same approach. This opens a novel conceptual framework for the study of the dynamical surface roughening and ripple formation on crystal and amorphous surfaces during ion sputtering.
Description
Keywords
Keywords: Boundary conditions; Computer simulation; Differential equations; Erosion; Excavation; Finite difference method; Granular materials; Hydrodynamics; Interfacial energy; Numerical methods; Sand; Sputtering; Stresses; Surface roughness; Morphogenesis; Ripple Granular systems; Ripple formation; Surface instabilities
Citation
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Source
Physica A: Statistical mechanics and its applications
Type
Journal article