Title: Surface-enhanced Raman scattering of graphene with photo-assisted-synthesized gold nanoparticles
Authors: Cheng, Cheng-En
Lin, Chi-Yuan
Chang, Hao-Yu
Huang, Chen-Han
Lin, Hsing-Ying
Chen, Chia-Hao
Hsu, Chia-Chen
Chang, Chen-Shiung
Chien, Forest Shih-Sen
光電工程學系
Department of Photonics
Issue Date: 11-Mar-2013
Abstract: 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 mu m. 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. (c) 2013 Optical Society of America
URI: http://dx.doi.org/10.1364/OE.21.006547
http://hdl.handle.net/11536/21386
ISSN: 1094-4087
DOI: 10.1364/OE.21.006547
Journal: OPTICS EXPRESS
Volume: 21
Issue: 5
Begin Page: 6547
End Page: 6554
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