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Plasmonic band-edge modulated surface-enhanced Raman scattering

机译：等离子体波带边调制的表面增强拉曼散射

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摘要

The band structure of surface plasmon polaritons (SPPs) on the Ag surface in the presence of gratings and SPP-based surface-enhanced Raman scattering (SERS) are investigated theoretically and experimentally. The SPP bandgap position can be tuned by geometric parameters. The SPP band edge dominates the SERS behavior. The template stripping process is introduced to reduce SPP propagation losses, improving SERS sensitivity by ∼40. Apart from flexibility and a moderate SERS enhancement factor of the order of 10~5-10~6, the SPP band structure is highly reproducible with a relative standard deviation of 10.9%. Our results open opportunities for SPP band structures to serve as SERS substrates.
机译：从理论上和实验上研究了存在光栅和基于SPP的表面增强拉曼散射（SERS）时，Ag表面上的表面等离子体激元（SPPs）的能带结构。 SPP带隙的位置可以通过几何参数进行调整。 SPP频带边缘支配着SERS行为。引入模板剥离工艺以减少SPP传播损耗，将SERS灵敏度提高约40。除了柔韧性和适度的SERS增强因子（10〜5-10〜6数量级）外，SPP带结构还具有很高的重现性，相对标准偏差为10.9％。我们的结果为SPP能带结构用作SERS底物提供了机会。

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  • 来源
    《Applied Physics Letters》 |2017年第5期|051601.1-051601.4|共4页
  • 作者

    Yuan Lierong; Qin Kang; Tan Jun; Bao Peng; Cui Guoxin; Wang Qianjin; Evans Stephen D.; Lu Yanqing; Zhu Yongyuan; Zhang Xuejin;

  • 作者单位

    Natl. Lab. of Solid State Microstructures and Collab. Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, China,School of Physics, Nanjing University, Nanjing, China;

    Natl. Lab. of Solid State Microstructures and Collab. Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, China,Kuang Yaming Honors School, Nanjing University, Nanjing, China;

    Natl. Lab. of Solid State Microstructures and Collab. Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, China,School of Physics, Nanjing University, Nanjing, China;

    School of Physics and Astronomy, University of Leeds, Leeds, United Kingdom;

    Natl. Lab. of Solid State Microstructures and Collab. Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, China,College of Engineering and Applied Sciences, Nanjing University, Nanjing, China;

    Natl. Lab. of Solid State Microstructures and Collab. Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, China,College of Engineering and Applied Sciences, Nanjing University, Nanjing, China;

    School of Physics and Astronomy, University of Leeds, Leeds, United Kingdom;

    Natl. Lab. of Solid State Microstructures and Collab. Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, China,College of Engineering and Applied Sciences, Nanjing University, Nanjing, China;

    Natl. Lab. of Solid State Microstructures and Collab. Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, China,School of Physics, Nanjing University, Nanjing, China;

    Natl. Lab. of Solid State Microstructures and Collab. Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, China,College of Engineering and Applied Sciences, Nanjing University, Nanjing, China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
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  • 正文语种 eng
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  • 入库时间 2022-08-18 03:14:11

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