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Journal articles
Optical response of a hematite coating: ellipsometry data versus Fourier-based computations
Abstract : The optical properties of a hematite-epoxy coating are predicted numerically and compared with el-lipsometry measurements. The highly-heterogeneous dispersion of nanocubic hematite particles in the epoxy resin is simulated using a previously developed two-scales random model. The local anisotropic permittivity tensor of hematite particles, and that of the epoxy, are estimated by ellipsometry measurements carried out on a macroscopic hematite and epoxy samples. Fourier-based methods using a "discrete" Green operator are used to treat complex permittivities. They predict the effective and local electric displacement field in the quasi-static approximation. The former is close to two estimates based on the Hashin-Shtrikman bounds and a self-consistent approximation. Good agreement is found between experimental data and FFT computations in the whole range of the visible spectrum.
Cited literature [32 references]
https://hal-mines-paristech.archives-ouvertes.fr/hal-01232497
Contributor : François Willot <>
Submitted on : Monday, November 23, 2015 - 3:50:19 PM
Last modification on : Wednesday, January 20, 2021 - 4:38:03 PM
Long-term archiving on: : Wednesday, February 24, 2016 - 1:10:27 PM
Contributor : François Willot <>
Submitted on : Monday, November 23, 2015 - 3:50:19 PM
Last modification on : Wednesday, January 20, 2021 - 4:38:03 PM
Long-term archiving on: : Wednesday, February 24, 2016 - 1:10:27 PM
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coukaEtAlASEM.pdf
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