Release Time:2019-03-09  Hits:

Indexed by: Journal Article

Date of Publication: 2013-09-01

Journal: PLASMONICS

Included Journals: Scopus、SCIE

Volume: 8

Issue: 3

Page Number: 1351-1360

ISSN: 1557-1955

Key Words: Local surface plasmon resonance; Silver nanosphere clusters; Green function; Optical efficiencies

Abstract: The local surface plasmon resonance properties in systems consisting of silver nanosphere clusters are studied by Green's function. The extinction, absorption, and scattering efficiencies band of two, three, and more silver nanospheres clusters are discussed in detail. The clusters show new types of the local surface plasmon resonances compared with single silver nanosphere. Our results suggest that the resonances depend strongly on individual particles' characteristics such as their shapes, gap distances, directions and polarizations of incident light waves, and the number of clusters. The spectrum shows that equilateral triangle nanospheres has a good absorption peak, while the better red-shifted with three aligned nanospheres. In addition, the distributions of electric field intensity for three and four touched silver nanospheres are also investigated. The study is useful to broaden the application scope of Raman spectroscopy and nanooptics.