Surface plasmon resonances of clustered nanoparticles

Details Surface plasmon resonances of clustered nanoparticles Surface plasmon resonances of clustered nanoparticles

2011-04-29

arxiv.org/abs/1104.5666v1

Plasmonics (2011) 6:407--412

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

12 pages, 3 figures, to be published in Plasmonics and posted online

Scientific paper

10.1007/s11468-011-9218-3

Linear clusters made by tightly connecting two or more metallic nanoparticles have new types of surface plasmon resonances as compared to isolated nanoparticles. These new resonances are related to the size of the junction and to the number of interconnected particles and have direct interpretation as eigenmodes of a Boundary Integral Equation (BIE). This formulation allows effective separation of geometric and shape contribution from electric properties of the constituents. Results for particles covered by a thin shell are also provided. In addition, the present analysis sheds a new light on the interpretation of recent experiments from literature.

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