The enhanced Raman scattering from Ag nanoball/ZnO hollow nanosphere arrays fabricated by laser-induced Annealing
In this work,a facile method was presented to produce Ag nanoball (NB)/ZnO hollow nanosphere (HNS) hybrid structure.Large scale,two-dimensional (2D) ZnO HNS arrays were fabricated on sapphire substrates using the polystyrene (PS) nanospheres as the template.Ag film were deposited on ZnO HNS arrays by radio frequency (RF) magnetron sputtering and then aggregated into Ag NBs on the top of ZnO HNS by the laser irradiation treatment.The size and distribution of Ag NB arrays were controlled by employing different ZnO HNS supporting structure templates.The scanning electron microscopy (SEM) was applied to visually study the evolution process of Ag NB/ZnO NHS arrays.X-ray diffraction (XRD) was carried out to characterize crystal structures of the samples.Obvious surface enhanced Raman (SERS) signals were observed from the Ag NB/ZnO NHS nanocomposite structure compared with that in the ZnO HNS structure by using the R6G as the testing agent.Theoretical simulation results demonstrate that the Raman enhancement originates from the significant enhanced local electromagnetic field induced by the surface plasmon resonance (SPR) of Ag NBs.
Ag NB/ZnO HNS laser-induced annealing SERS FDTD
Yashu Zang Jun Yin Jing Li Junyong Kang
Department of Physics/Pen-Tung Sah Micro-Nano Institute of Science and Technology, XiamenUniversity, Wuhan National Laboratory for Optoelectronics, School of Optoelectronic Science and Engineering,Huaz
国际会议
中国微米纳米技术学会第14届学术年会、第3届国际年会暨第6届微米纳米技术“创新与产业化国际研讨与展览会(CSMNT2012 & ICMAN2012)
杭州
英文
1-6
2012-11-04（万方平台首次上网日期，不代表论文的发表时间）