We have developed an experimental method based on the visibility factor of light-scattering minima to obtain size-polydispersity information from contaminants upon a flat substrate. We verify the method by using double-interaction-model calculations and use this technique to examine experimentally the radial variation of a micrometer-sized fiber and the size polydispersity of spherical particles upon a substrate.
© 1999 Optical Society of America
J. L. de la Peña, J. M. Saiz, Gorden Videen, F. González, P. J. Valle, and F. Moreno, "Scattering from particles on surfaces: visibility factor and polydispersity," Opt. Lett. 24, 1451-1453 (1999)