Journal
APPLIED PHYSICS B-LASERS AND OPTICS
Volume 111, Issue 4, Pages 577-588Publisher
SPRINGER HEIDELBERG
DOI: 10.1007/s00340-013-5377-6
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Funding
- Federal Targeted Program of RF 'SS-PPIR'
- foundation 'Dynasty'
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We theoretically examine plasmonic resonance excited between two close metallic grains embedded into a dielectric matrix. The grains sizes are assumed to be much less than the wavelength of the electromagnetic wave in the dielectric medium and the grain's separation is assumed to be much smaller than the grains sizes. A qualitative scheme is developed that enables one to estimate frequency of the plasmonic resonance and value of the field enhancement inside the gap. Our general arguments are confirmed by rigorous analytic solution of the problem for simplest geometry-two identical spherical grains.
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