title: Optical analog of Matthiessen's rule in a one-dimensional model for diffusive light transport in foams.
abstract: We study photon diffusion in a one-dimensional model foam composed of thin films and Plateau borders. Each thin film or Plateau border is characterized by its own intensity transmittance. We relate l(Foam)*, the transport-mean-free path of photons diffusing in the foam, to the foam microstructure. Denoting by l(Film)* (l(PB)*) the transport-mean-free path of photons in a medium composed only of thin films (Plateau borders), we find 1/l(Foam)*=φ(F)/l(Film)*+φ(P)/l(PB)*. Here φ(F) and φ(P)=1-φ(F) are the fraction of films and Plateau borders, respectively.
authors.affiliation: Department of Physics, University of Tehran, P.O. Box 14395-547, Tehran, Iran. miri@iasbs.ac.ir
authors.forename: MirFaez
authors.initials: M
authors.lastname: Miri
authors.forename: Sara
authors.initials: S
authors.lastname: Kheradsoud
authors.forename: Ebrahim
authors.initials: E
authors.lastname: Madadi
authors.forename: Zahra
authors.initials: Z
authors.lastname: Mokhtari
authors.forename: Hossein
authors.initials: H
authors.lastname: Hassani