Optical properties of metal nanoparticles with no center of inversion symmetry: observation of volume plasmons

Details Optical properties of metal nanoparticles with no center of inversion symmetry: observation of volume plasmons Optical properties of metal nanoparticles with no center of inversion symmetry: observation of volume plasmons

2007-10-08

arxiv.org/abs/0710.1652v2

Physical Review B, 76, 184302 (2007).

Physics

Optics

14 pages, 5 figures. Physical Review B, 2007, accepted

Scientific paper

10.1103/PhysRevB.76.184302

We present theoretical and experimental studies of the optical response of L-shaped silver nanoparticles. The scattering spectrum exhibits several plasmon resonances that depend sensitively on the polarization of the incident electromagnetic field. The physical origin of the resonances is traced to different plasmon phenomena. In particular, a high energy band with unusual properties is interpreted in terms of volume plasmon oscillations arising from the asymmetry of a nanoparticle.

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