Accession Number : ADA134875

Title :   Theoretical Aspects of Laser-Induced Periodic Surface Structure Formation,


Personal Author(s) : Hutchinson,M ; Lee,K T ; Murphy,W C ; Beri,A C ; George,T F

PDF Url : ADA134875

Report Date : Nov 1983

Pagination or Media Count : 13

Abstract : Laser-induced periodic pattern formation has been observed on a variety of substances. In particular, low-power laser have been used to deposit a pattern on a metal surface. For a relatively smooth surface grating, this pattern can be explained in terms of a perturbative solution of Maxwell's equations. However, as the surface grating is enhanced by this initial deposition, the perturbation solution breaks down. An alternate non-perturbative solution of Maxwell's equations for such rough surfaces is considered here. Moreover, other possible mechanisms that may assist pattern formation are discussed, such as field-enhanced evaporation and surface migration. (Author)

Descriptors :   *Metals, *Surface reactions, *Laser beams, Patterns, Deposition, Surface roughness, Gratings(Spectra), Maxwells equations, Theory

Subject Categories : Physical Chemistry
      Lasers and Masers

Distribution Statement : APPROVED FOR PUBLIC RELEASE