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Propagating Plasmons on Silver Nanowires

机译：在银纳米线上传播等离激元

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摘要

Chemically synthesized Ag nanowires (NWs) can serve as waveguides to support propagating surface plasmons (SPs). By using the propagating SPs on Ag NWs, the surface-enhanced Raman scattering of molecules, located in the nanowire-nanoparticle junction a few microns away from the laser spot on one end of the NW, was excited. The propagating SPs can excite the excitons in quantum dots, and in reverse, the decay of excitons can generate SPs. The direction and polarization of the light emitted through the Ag NW waveguide. The emission polarization depends strongly on the shape of the NW terminals. In branched NW structures, the SPs can be switched between the main NW and the branch NW, by tuning the incident polarization. The light of different wavelength can also be controlled to propagate along different ways. Thus, the branched NW structure can serve as controllable plasmonic router and multiplexer.
机译：化学合成的银纳米线（NW）可以用作波导，以支持传播的表面等离激元（SP）。通过在银纳米线上使用传播的SP，激发了位于纳米线-纳米粒子结中的分子的表面增强拉曼散射，该纳米线与纳米线一端的激光点相距几微米。传播的SP可以激发量子点中的激子，反之，激子的衰变可以生成SP。通过Ag NW波导发射的光的方向和偏振。发射极化在很大程度上取决于NW端子的形状。在分支NW结构中，可以通过调整入射极化来在主NW和分支NW之间切换SP。还可以控制不同波长的光沿不同方式传播。因此，分支的NW结构可以用作可控的等离子路由器和多路复用器。

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  • 来源
  • 会议地点 San Diego CA(US)
  • 作者

    Weidong He; Hong Wei; Zhipeng Li; Yingzhou Huang; Yurui Fang; Ping Li; rnHongxingXu;

  • 作者单位

    National Key Laboratory of Electromechanical Engineering and Control, Beijing Institute of Technology, Beijing 100081, China;

    Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, Box 603-146, Beijing 100190, China;

    Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, Box 603-146, Beijing 100190, China;

    Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, Box 603-146, Beijing 100190, China;

    Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, Box 603-146, Beijing 100190, China;

    National Key Laboratory of Electromechanical Engineering and Control, Beijing Institute of Technology, Beijing 100081, China;

    Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, Box 603-146, Beijing 100190, China. Division of Solid State Physics / The Nanometer Structure Consortium, Lund University, Box 118, S-22100, Lund, Sweden;

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  • 正文语种 eng
  • 中图分类 金属材料;
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