期刊
NANO LETTERS
卷 12, 期 7, 页码 3749-3755出版社
AMER CHEMICAL SOC
DOI: 10.1021/nl301594s
关键词
Dielectric nanoparticles; magnetic dipole; Mie resonance; optical magnetism; metamaterials
类别
资金
- Deutsche Forschungsgemeinschaft (DFG) [CH179/20-1, SPP1391]
- DAAD PROCOPE project
- Excellence Cluster QUEST (Center for Quantum Engineering and Space-Time Research)
- Lundbeck Foundation [R49-A5871]
- Russian Foundation for Basic Research [12-02-00528]
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.
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