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Tunable optical coupling in regular arrays of gold and silver nanoparticles
被引:0
|作者:
Smith, David A.
[1
]
Pinchuk, Anatoliy O.
[1
]
机构:
[1] Univ Colorado, Dept Phys & Energy Sci, Colorado Springs, CO 80918 USA
来源:
PLASMONICS: METALLIC NANOSTRUCTURES AND THEIR OPTICAL PROPERTIES X
|
2012年
/
8457卷
基金:
美国国家科学基金会;
关键词:
Surface Plasmon Resonance;
nanoparticles;
Plasmonics;
SURFACE-PLASMON RESONANCE;
DISCRETE-DIPOLE APPROXIMATION;
NEAR-FIELD;
NEGATIVE PERMEABILITY;
NANOROD ASSEMBLIES;
ABSORPTION;
SCATTERING;
LIGHT;
INDEX;
METAMATERIALS;
D O I:
10.1117/12.930751
中图分类号:
TB3 [工程材料学];
学科分类号:
0805 ;
080502 ;
摘要:
We report far-field optical extinction spectra of linear chains of gold and silver nanocylinders with interparticle separations close to the particles' surface plasmon resonance (SPR) wavelength. The spectra reveal a typical pattern of dipole-like and quadrupole SPR peaks and additional non-SPR peaks. We rationalize the extra peaks by constructive interference of the scattered and incident electromagnetic fields.
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