1 June 2010 On limitations of the Bruggeman formalism for inverse homogenization
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J. of Nanophotonics, 4(1), 043510 (2010). doi:10.1117/1.3460908
The Bruggeman formalism provides an estimate εBrhcm of the relative permittivity of a homogenized composite material (HCM), arising from two component materials with relative permittivities εa and εb. It can be inverted to provide an estimate of εa, from a knowledge of εBrhcm and εb. Numerical studies show that the inverse Bruggeman estimate εa can be physically implausible when (i) Re{εBrhcm}/Re {εb} > 0 and the degree of HCM dissipation is moderate or greater; or (ii) Re{εBrhcm}/Re {εb} < 0 regardless of the degree of HCM dissipation. Furthermore, even when the inverse Bruggeman estimate is not obviously implausible, huge discrepancies can exist between this estimate and the corresponding estimate provided by the inverse Maxwell Garnett formalism.
Siti Suhana Jamaian, Tom G. Mackay, "On limitations of the Bruggeman formalism for inverse homogenization," Journal of Nanophotonics 4(1), 043510 (1 June 2010). https://doi.org/10.1117/1.3460908


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