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Science 17 October 2003:
Vol. 302. no. 5644, pp. 419 - 422
DOI: 10.1126/science.1089171
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Reports

A Hybridization Model for the Plasmon Response of Complex Nanostructures

E. Prodan,1 C. Radloff,2 N. J. Halas,2,3* P. Nordlander1,3

We present a simple and intuitive picture, an electromagnetic analog of molecular orbital theory, that describes the plasmon response of complex nanostructures of arbitrary shape. Our model can be understood as the interaction or "hybridization" of elementary plasmons supported by nanostructures of elementary geometries. As an example, the approach is applied to the important case of a four-layer concentric nanoshell, where the hybridization of the plasmons of the inner and outer nanoshells determines the resonant frequencies of the multilayer nanostructure.

1 Department of Physics, Rice University, Houston, TX 77251, USA.
2 Department of Chemistry, Rice University, Houston, TX 77251, USA.
3 Department of Electrical and Computer Engineering, and the Rice Quantum Institute, Rice University, Houston, TX 77251, USA.

* To whom correspondence should be addressed. E-mail: halas{at}rice.edu

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