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Citation: Zhu Zi-Hua, Zhu Tao, Wang Jian, Liu Zhong-Fan. Dependence of the Raman Intensity on the Surface Coverage of Nanoparticles in SERS-ctive le Nanoparticulate Films[J]. Acta Physico-Chimica Sinica, ;2000, 16(02): 138-144. doi: 10.3866/PKU.WHXB20000209 shu

Dependence of the Raman Intensity on the Surface Coverage of Nanoparticles in SERS-ctive le Nanoparticulate Films

1.
Center for Nanoscale Science and Technology(CNST),College of Chemistry Molecular Engineering,Peking University,Beijing 100871

Received Date: 8 April 1999
Available Online: 15 February 2000

The relationship between the surface coverage of nanoparticles and the intensity of surface enhanced Raman scattering(SERS) in a two dimensional ld nanoparticulate film was studied. High enhancement was observed due to the nanoparticle substrate electromagnetic coupling and the contribution of chemical enhancement. It was found that SERS intensity increased linearly at lower coverage, then negatively deflected from the initial line, and finally reached a plateau at increased coverages. It was also found that larger nanoparticles were more effective in Raman enhancement.
- Au nanoparticles,
- Nanoparticle assembly,
- SERS,
- Surface coverage
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