Surface plasmon resonances of metallic nanostars/nanoflowers for surface-enhanced Raman scattering

Details Surface plasmon resonances of metallic nanostars/nanoflowers for surface-enhanced Raman scattering Surface plasmon resonances of metallic nanostars/nanoflowers for surface-enhanced Raman scattering

2009-10-22

arxiv.org/abs/0910.4269v1

Physics

Optics

5 pages, 6 figures, submitted to Plasmonics (May 2009)

Scientific paper

We investigate theoretically the optical properties associated to plasmon resonances of metal nanowires with cross section given by low-order Chebyshev nanoparticles (like rounded-tip nanostars or nanoflowers). The impact of the nanoflower shape is analyzed for varying symmetry and deformation parameter through the spectral dependence of resonances, and their corresponding near field distributions. Large field intensity enhancements are obtained at the gaps between petals, apart from the tips themselves, which make these nanostars/nanoflowers specially suitable to host molecules for SERS sensing applications.

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