Double-Resonance Plasmon Substrates for Surface-Enhanced Raman Scattering with Enhancement at Excitation and Stokes Frequencies

作者：Chu Yizhuo; Banaee Mohamad G; Crozier Kenneth B^*

来源：ACS Nano, 2010, 4(5): 2804-2810.

DOI：10.1021/nn901826q

• localized surface plasmon
• surface plasmon polariton
• nanoparticle
• surface enhanced Raman scattering
• spatial distribution
• hybridization

We report a surface-enhanced Raman scattering (SERS) substrate with plasmon resonances at both excitation and Stokes frequencies. This multilayer structure combines localized surface plasmons on the nanoparticles with surface plasmon polaritons excited on a gold film. The largest SERS enhancement factor for a gold device is measured to be 7.2 x 10(7), which is more than 2 orders of magnitude larger than that measured on a gold nanoparticle array on a glass substrate. The largest SERS enhancement for a silver device is measured to be 8.4 x 10(8).

• 出版日期2010-5