| 利用纳米门电极增强拉曼散射 |
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| 引用本文： | 向东,王青玲,王希成,李铁平,魏有峰,罗中杰. 利用纳米门电极增强拉曼散射[J]. 中国激光, 2011, 0(11) |
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| 作者姓名： | 向东 王青玲 王希成 李铁平 魏有峰 罗中杰 |
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| 作者单位： | 中国地质大学数学与物理学院;亚琛工业大学;中国地质大学机械与电子信息学院; |
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| 基金项目： | 国家973计划(2011CB710606); 中国地质大学教育部长江三峡库区地质灾害研究中心开放基金(TGRC201020); 优秀青年教师项目(CUGQNL0805)资助课题 |
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| 摘 要： | 为了更好地了解表面增强拉曼光谱(SERS)的机制,并进一步提高增强因子,研制了具有高稳定性的纳米劈裂装置及芯片。结合纳米劈裂技术及SERS技术,在拉曼光谱测量的同时能非常精确地操纵两纳米电极间的距离以观察相应拉曼光谱强度的变化。发现拉曼光谱强度依赖于纳米电极的间距以及激光的偏振化方向。在利用两纳米电极作为增强体的基础上引入了纳米门电极,并观察偏置电压下的门电极对拉曼光谱信号的影响。实验结果表明,拉曼光谱信号的强度强烈地依赖于纳米门电极上所施加的偏置电压。实验为增强拉曼信号提供了新的方法,同时为拉曼光谱增强机制的理论研究提供了参考数据。
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| 关 键 词： | 光谱学 表面增强拉曼散射光谱 纳米劈裂技术 分子电子 光刻 纳米门电极 |
Enhanced Raman Scattering by Nano Gate Electrode |
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| Xiang Dong, Wang Qingling Wang Xicheng Li Tieping Wei Youfeng Luo Zhongjie. Enhanced Raman Scattering by Nano Gate Electrode[J]. Chinese Journal of Lasers, 2011, 0(11) |
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| Authors: | Xiang Dong Wang Qingling Wang Xicheng Li Tieping Wei Youfeng Luo Zhongjie |
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| Affiliation: | Xiang Dong1,2 Wang Qingling3 Wang Xicheng1 Li Tieping1 Wei Youfeng1 Luo Zhongjie1 (1School of Mathematics and Physics,China University of Geo-Science,Wuhan,Hubei 430074,China 2Aachen University of Technology,Aachen D-52062,Germany 3Faculty of Mechanical and Electronics Information,China University of Geoscience,China) |
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| Abstract: | In order to better understand the mechanism of surface enhanced Raman spectroscopy(SERS) and further improve the Raman enhancement factor,a strategy which combines SERS and mechanical controllable break junctions(MCBJ) is employed.With such a strategy,the gap width between two nanoelectrodes can be adjusted precisely during the period of SERS measurement.The dependence of SERS intensity on the gap width and the incident laser polarization are investigated.Moreover,a nano gate-electrode with adjustable bias ... |
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| Keywords: | spectroscopy surface enhanced Raman scattering spectroscopy mechanical controllable break junction molecular electronics lithography nano gate electrode |
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