摘要
This paper presents a convenient and reliable method to prepare gold nanoparticles (AuNPs) on graphene. Photo-assisted synthesis (PAS) was employed to grow AuNPs in AuCl4 - electrolyte on graphene. The size of AuNPs could be as large as 130 nm. This optical method had a steady growth rate of AuNPs. The distribution of AuNPs was well controlled by focusing the laser for PAS. The minimum diameter of the distribution was approximately 1 μm. Surface-enhanced Raman scattering of graphene due to AuNPs was observed. Electrical fields near AuNPs calculated by the finite-difference time-domain algorithm ensured that the Raman enhancement was attributed to the localized surface plasmons of AuNPs.
原文 | ???core.languages.en_GB??? |
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頁(從 - 到) | 6547-6554 |
頁數 | 8 |
期刊 | Optics Express |
卷 | 21 |
發行號 | 5 |
DOIs | |
出版狀態 | 已出版 - 11 3月 2013 |