Effective optical properties of non-absorbing nanoporous thin films
By Matthew M. Braun, Laurent Pilon. Thin Solid Films, 2006
202 citations recorded by the source corpus.
Numerous effective medium models have been proposed for the effective optical properties of nanoporous media. However, validations of these models against experimental data are often contradictory and inconclusive. This issue was numerically investigated by solving the two-dimensional Maxwell's equations in non-absorbing nanoporous thin films with various morphologies. It was found that below a certain critical film thickness, the effective index of refraction depends on the porosity and on the pore size, shape and spatial distribution. For thick enough films the effective index of refraction depends solely on porosity and on the indices of refraction of the two constitutive phases. The numerical results agree very well with a recent model obtained by applying the Volume Averaging Theory to the Maxwell's equations. However, commonly used models systematically and sometimes significantly underpredict the numerical results.
Subfields: Materials Chemistry
View Paper: https://www.semanticscholar.org/paper/83c5dfd53f74dd04de7db2656c9e9ce78e3dc7b0
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In Materials Chemistry
Citations in the corpus
- Investigating the void structure of the polyamide active layers of thin-film composite membranes (2016, unknown): “Two of the most commonly used EMA models for the calculation of effective refractive indices are the parallel and series models given by [51]”
- Nanoporous polymeric materials: A new class of materials with enhanced properties (2016, methodology): “This result is in good agreement with the work of Braun and Pilon [226], since the regime they considered is above the critical film thickness given above.”