Demonstration of Magnetic Dipole Resonances of Dielectric Nanospheres in the Visible Region

被引：878

作者：

Evlyukhin, Andrey B. ^{[1
]}

Novikov, Sergey M. ^{[2
]}

Zywietz, Urs ^{[1
]}

Eriksen, Rene Lynge ^{[2
]}

Reinhardt, Carsten ^{[1
]}

Bozhevolnyi, Sergey I. ^{[2
]}

Chichkov, Boris N. ^{[1
]}

机构：

[1] Laser Zentrum Hannover eV, D-30419 Hannover, Germany

[2] Univ So Denmark, Inst Technol & Innovat, DK-5230 Odense M, Denmark

来源：

NANO LETTERS | 2012年 / 12卷 / 07期

基金：

俄罗斯基础研究基金会;

关键词：

Dielectric nanoparticles; magnetic dipole; Mie resonance; optical magnetism; metamaterials; NANOPARTICLES;

D O I：

10.1021/nl301594s

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Strong resonant light scattering by individual spherical Si nanoparticles is experimentally demonstrated, revealing pronounced resonances associated with the excitation of magnetic and electric modes in these nanoparticles. It is shown that the low-frequency resonance corresponds to the magnetic dipole excitation. Due to high permittivity, the magnetic dipole resonance is observed in the visible spectral range for Si nanoparticles with diameters of similar to 200 nm, thereby opening a way to the realization of isotropic optical metamaterials with strong magnetic responses in the visible region.

引用

页码：3749 / 3755

页数：7

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