Physics – Condensed Matter – Materials Science
Scientific paper
2005-08-17
phys. stat. sol. (b) 242, 2995 (2005)
Physics
Condensed Matter
Materials Science
5 pages
Scientific paper
10.1002/pssb.200562235
Gloss is a quantity used in the optical industry to quantify and categorize materials according to how well they scatter light specularly. With the aid of phase perturbation theory, we derive an approximate expression for this quantity for a one-dimensional randomly rough surface. It is demonstrated that gloss depends in an exponential way on two dimensionless quantities that are associated with the surface randomness: the root-mean-square roughness times the perpendicular momentum transfer for the specular direction, and a correlation function dependent factor times a lateral momentum variable associated with the collection angle. Rigorous Monte Carlo simulations are used to access the quality of this approximation, and good agreement is observed over large regions of parameter space.
Andreassen Erik
Larsen AAge G.
Nord-Varhaug Katrin
Ommundsen Espen
Simonsen Ingve
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