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Localization of electromagnetic waves in three-dimensional fractal cavities | | Mitsuo Wada Takeda
; Soshu Kirihara
; Yoshinari Miyamoto
; Kazuaki Sakoda
; Katsuya Honda
; | | Date: |
5 Mar 2004 | | Journal: | Phys Rev Lett, 92 (9), 093902 | | Abstract: | Three-dimensional fractals called the Menger sponge, with a fractal dimension D=log(20/log(3, were fabricated from epoxy resin by stereolithography. Clear attenuation of both reflection and transmission intensity was observed at 12.8 GHz for a cubic specimen with an edge size of 27 mm that was constructed up to the third stage of the self-similar patterns. The electromagnetic field was found to be confined in the central part of the specimen at this frequency. The localization is not caused by the presence of a photonic band gap as in photonic crystals but should be attributed to a singular photon density of states realized in the fractal structure. This is the first report on such localization of electromagnetic waves in three-dimensional fractal cavities. | | Source: | PubMed, pmid15089465 | | Services: | Forum | Review | Favorites | |
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