Enhancing the Interaction between High-Refractive Index Nanoparticles and Gold Film Substrates Based on Oblique Incidence Excitation

Yu Lun Kuo, Shih Yi Chuang, Shiuan Yeh Chen, Kuo-Ping Chen*

*Corresponding author for this work

研究成果: Article同行評審

16 引文 斯高帕斯(Scopus)

摘要

We investigate the coupling of dipole resonances induced in a heteromaterial system composed of a high-refractive-index nanoparticle and a highly reflective substrate. A broad scattering signal and strong electric near-field enhancement in the near-infrared region are generated by a hybrid Si nanoparticle on a gold-film system under oblique illumination. Dark-field microscopy investigations of the scattering signal measurement reveal the resonance shifts of the dipole mode of silicon nanoparticles on gold films. Further, the scattering signal is enhanced for p-polarized illumination in the near-infrared region. The results indicate that the coupling of Si nanoparticles on a gold-film system facilitates a possible application for both surface-enhanced fluorescence and surface-enhanced Raman scattering.

原文English
頁(從 - 到)613-619
頁數7
期刊ACS Omega
1
發行號4
DOIs
出版狀態Published - 31 十月 2016

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