| Au纳米耦合结构表面等离激元的EELS分析 |
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| 引用本文： | 张奚宁,童利民,蒲继雄.Au纳米耦合结构表面等离激元的EELS分析[J].华侨大学学报(自然科学版),2016,0(2):160-163. |
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| 作者姓名： | 张奚宁 童利民 蒲继雄 |
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| 作者单位： | 1. 华侨大学 信息科学与工程学院, 福建 厦门 361021;2. 浙江大学 光电科学与工程学院, 浙江 杭州 310027 |
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| 摘 要： | 应用透射电子显微镜中电子能量损失谱仪(TEM-EELS),对电子束激发的单晶Au纳米线耦合结构及单晶/多晶纳米薄膜的表面等离激元(SPs)特征进行分析.结果表明:直径约为10 nm的两单晶Au纳米线平行耦合时,单根纳米线和耦合结构中均存在位于2.4 eV 的SPs共振,耦合结构中SPs的纵模数增加;单晶及多晶Au纳米薄膜在1.4 eV附近存在SPs模式,相较于单晶薄膜,多晶Au纳米薄膜的SPs共振峰位出现明显红移.
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| 关 键 词： | 纳米结构 耦合结构 Au 电子能量损失谱 表面等离激元 |
Study on Surface Plasmons in Au Nano Couple Structures by Electron Energy-Loss Spectroscopy |
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| ZHANG Xining,TONG Limin,PU Jixiong.Study on Surface Plasmons in Au Nano Couple Structures by Electron Energy-Loss Spectroscopy[J].Journal of Huaqiao University(Natural Science),2016,0(2):160-163. |
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| Authors: | ZHANG Xining TONG Limin PU Jixiong |
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| Institution: | 1. College of Information Science and Engineering, Huaqiao University, Xiamen 361021, China; 2. College of Optical Science and Engineering, Zhejiang University, Hangzhou 310027, China |
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| Abstract: | We demonstrate the characteristics of surface plasmons(SPs)of the Au monocrystal nanowires couple structure and monocrystal/polycrystal Au nanofilms in a transmission electron microscope(TEM)with electron energy-loss spectroscopy(EELS). We found that the plasmonic resonant modes, which are 2.4 eV in EELS, can be found both in a single 10-nm-diameter nanowire and tow coupled nanowires. In the parallel-coupling nanowires, more longitudinal modes are observed than that in single nanowire. In monocrystal and polycrystal Au nanofilms, the plasmonic modes at 1.4 eV are observed, while SPs resonance peak is red-shifted in polycrystalline Au nanofilm. |
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| Keywords: | nano structure couple structure Au electron energy-loss spectroscopy surface plasmon modes |
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