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Title: Analysis of light scattering by two-dimensional inhomogeneities in paper using general radiative transfer theory

Lateral light scattering simulations of printed dots are analyzed using general radiative transfer theory. We investigated the appearance of a printed paper in relation to the medium parameters like thickness of the paper sample, its optical properties, and the asymmetry factor. It was found that the appearance of a print greatly depends on these factors making it either brighter or darker. A thicker substrate with higher single scattering albedo backed with an absorbing surface makes the dots brighter due to increased number of scattering events. Additionally, it is shown that the optical effects of print also depend on illuminating and viewing angles along with the depth of ink penetration. A larger single scattering angle implies less intensity and the dots appear much blurred due to the shadowing effect prominent when viewed from sides. A fully penetrated dot of the same extinction coefficient as a partial penetrated one is darker due to increased absorption. These results can be used in applications dealing with lateral light scattering.
Authors:
 [1] ;  [2]
  1. Department of Natural Sciences, Engineering and Mathematics, Mid Sweden University, SE 851 70, Sundsvall (Sweden)
  2. Department of Computer Science, Electrical and Space Engineering, LuleƄ University of Technology, Box 812, SE-98128 Kiruna (Sweden)
Publication Date:
OSTI Identifier:
22390802
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1637; Journal Issue: 1; Conference: ICNPAA 2014: 10. International Conference on Mathematical Problems in Engineering, Aerospace and Sciences, Narvik (Norway), 15-18 Jul 2014; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ABSORPTION; ALBEDO; ASYMMETRY; LIGHT SCATTERING; OPTICAL PROPERTIES; RADIANT HEAT TRANSFER; SHADOW EFFECT; SUBSTRATES; SURFACES; THICKNESS; TWO-DIMENSIONAL CALCULATIONS