Localization of electromagnetic waves in three-dimensional fractal cavities

被引：94

作者：

Takeda, MW ^{[1
]}

Kirihara, S

Miyamoto, Y

Sakoda, K

Honda, K

机构：

[1] Shinshu Univ, Fac Sci, Dept Phys, Nagano 3908621, Japan

[2] Osaka Univ, Ctr Welding & Joining Res, Smart Proc Res Ctr, Osaka 5670047, Japan

[3] Natl Inst Mat Sci, Nanomat Lab, Tsukuba, Ibaraki 3050003, Japan

[4] Shinshu Univ, Fac Sci, Dept Math Sci, Nagano 3908621, Japan

来源：

PHYSICAL REVIEW LETTERS | 2004年 / 92卷 / 09期

关键词：

D O I：

10.1103/PhysRevLett.92.093902

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Three-dimensional fractals called the Menger sponge, with a fractal dimension D=log20/log3, 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.

引用

页码：093902 / 1

页数：4

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