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Validity Range of the Maxwell‐Garnett Theory
Author(s) -
Ruppin R.
Publication year - 1978
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2220870227
Subject(s) - dielectric , wavelength , range (aeronautics) , constant (computer programming) , particle (ecology) , particle size , physics , statistical physics , theoretical physics , optics , materials science , computer science , quantum mechanics , chemistry , composite material , oceanography , programming language , geology
Abstract The various restrictions which have to be imposed on the particle size in order for the Maxwell‐Garnett theory to be valid are discussed. It is shown that the requirement that the particle size must be much smaller than the wavelength of the light in the surrounding medium is insufficient near resonances of the dielectric constant of the particles. The relative merits of the various validity criteria are illustrated by some numerical examples.