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金核铂壳纳米棒光学特性的研究

Electromagnetic Property of Au Nanorods @ Pt Nanodots Core/Shell Nanorods Studied
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摘要 本研究工作利用金纳米棒作为核壳纳米结构的内核,金纳米棒因其独特的光学性质在受到光激发时会在其表面产生表面等离激元共振,产生强电磁场,同时利用在金核外侧构建疏松的纳米级铂岛状结构,在金棒外侧建立起粗糙表面,增加金棒表面的电磁场耦合,从而增强过渡金属的SERS效应,并应用FDTD数值模拟的方法讨论铂壳层形状变化对其局域表面等离激元特性的影响. Au@ Pt nanodots core nanostructures,prepared by the Au nanorods-mediated growth,shows high surface-enhanced Raman scattering(SERS) activity.Boosted by the long-range effect of the enhanced electromagnetic(EM) field generated by the Au core,the electromagnetic enhancement can be adjusted by changing the morphy of the nanoparticls.Simulations of the electromagnetic enhancement using the finite difference time domain(FDTD) method and taking into account the real shape of Au@ Pt nanorods are reported.The results show that the coupling structure can be used for simple,low cost and widely useful SERS substrates.
出处 《枣庄学院学报》 2016年第2期25-31,共7页 Journal of Zaozhuang University
基金 国家自然科学基金项目(项目编号:11447200) 山东省自然科学基金项目(项目编号:ZR2014BP014) 山东省科技发展计划项目(项目编号:2015GSF118079)
关键词 核壳结构 纳米棒 三维有限时域差分法 gold platinum core-shell nanorod FDTD
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参考文献7

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