Method of measuring an anisotropic surface diffusion tensor or surface energy anisotropies

US8583403B2 · kind B2 · utility

Assignee

• COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES · FR

Inventors

• Francois De Crecy · Seyssinet-Pariset, FR
• Jean-Charles Barbe · Seyssinet-Pariset, FR
• Daniel Girardeau-Montaut · Grenoble, FR

Key dates

• Filing date: Apr 30, 2009
• Grant date: Nov 12, 2013
• Expiry date: Jul 25, 2030

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C30B31/04
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A method for the determination of the diffusion tensor anisotropy or the surface energy anisotropy that does not require the formation of particular structures, and that is capable of being performed in cases of moderate-amplitude perturbations. The invention relates to measuring the temporal evolution of natural or artificial roughnesses, and analyzing the results in the firm of the 2D power spectral density for moderate-amplitude perturbations typically characterized by amplitude/wavelength ratios of the perturbation for a spatially defined perturbation having two wavelengths along two orthogonal directions, the ratios typically being less than 0.3.