Interaction between Plasmonic Nanoparticles Revisited with Transformation Optics

被引：121
|
作者：
Aubry, Alexandre [1 ]
Lei, Dang Yuan [1 ]
Maier, Stefan A. [1 ]
Pendry, J. B. [1 ]
机构：
[1] Univ London Imperial Coll Sci Technol & Med, Blackett Lab, Dept Phys, London SW7 2AZ, England
来源：
PHYSICAL REVIEW LETTERS | 2010年 / 105卷 / 23期
基金：
英国工程与自然科学研究理事会;
关键词：
ENHANCED RAMAN-SCATTERING; DIELECTRIC-CONSTANT; METALLIC NANOWIRES; DIMERS; GENERATION; RESONANCES; SPECTRUM; DEVICES;
D O I：
10.1103/PhysRevLett.105.233901
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The interaction between plasmonic nanoparticles is investigated by means of transformation optics. The optical response of a dimer can be decomposed as a sum of modes whose resonances redshift when the nanoparticles approach each other. The extinction and scattering cross sections as well as the field enhancement induced by the dimer are derived analytically taking into account radiation damping. Interestingly, some invisibility dips occur in the scattering spectrum and originate from a destructive interference between each surface plasmon mode.
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页数：4
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