Collective surface plasmon resonance coupling in silver nanoshell arrays

Collective surface plasmon resonance (SPR) excitations in an ordered array of silver nanoshells have been theoretically studied using generalized Mie theory. Near- and far-field radiative coupling between the nanoshells in the array result in a non-monotonic shift of the collective SPR band. When th...

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Bibliographic Details
Published in:Applied physics. B, Lasers and optics Lasers and optics, 2008-10, Vol.93 (1), p.31-38
Main Authors: Pinchuk, A. O., Schatz, G. C.
Format: Article
Language:English
Subjects:
Arrays
Engineering
Interference
Joining
Lasers
Nanocomposites
Nanomaterials
Nanostructure
Optical Devices
Optics
Photonics
Physical Chemistry
Physics
Physics and Astronomy
Plasmons
Quantum Optics
Silver
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Summary:Collective surface plasmon resonance (SPR) excitations in an ordered array of silver nanoshells have been theoretically studied using generalized Mie theory. Near- and far-field radiative coupling between the nanoshells in the array result in a non-monotonic shift of the collective SPR band. When the distance between the shells in the array approaches that of the collective SPR wavelength, we observe narrowing of the collective SPR band due to constructive interference between the scattered electric field from the particles in the array. Further increase of the distance between the nanoshells in the array leads to destructive interference and broadening of the collective SPR band.
ISSN:0946-2171
1432-0649
DOI:10.1007/s00340-008-3148-6