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

Source

Physica A: Statistical mechanics and its applications

Type

Journal article

Book Title

Entity type

Access Statement

License Rights

Restricted until