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首页> 外文期刊>Applied Surface Science >Sandwich-like Ag@Cu@CW SERS substrate with tunable nanogaps and component based on the Plasmonic nanonodule structures for sensitive detection crystal violet and 4-aminothiophenol
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Sandwich-like Ag@Cu@CW SERS substrate with tunable nanogaps and component based on the Plasmonic nanonodule structures for sensitive detection crystal violet and 4-aminothiophenol

机译：夹层 - 如ag @ cu @ cw sers衬底采用可调谐纳米 - 底载体和组件，基于敏感检测晶体紫色和4-氨噻吩酚的等离子体纳米粒结构

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摘要

It is critical in nano physics nowadays to fabricate a superior surface enhanced Raman scattering (SEAS) substrate which provides the high-density 'hot spots' for obtaining the strong local electric field. A sensitive, large-scale and low-cost sandwich-like Ag@Cu@CW SERS active substrate was successfully fabricated by decorating the Cu and Ag nanoparticles on the cicada wing (CW) with uniformly-distributed nanopillars via a simple method with the DC magnetron sputtering system. The SERS properties of the surface rough Ag@Cu@CW substrate with optimal nanogaps have been investigated in terms of the enhancement factor (EF, similar to 3.1369 x 10(5)), limit of detection (10(-11) M of 4-ATP), relative standard deviation (RSD, 15%) and sampleto-sample repeatability. The high-density 'hot spots' formed by the appropriate nanogaps and specific plasmonic nanostructures would give rise to stronger local electromagnetic field, which was also confirmed by the 3D finite-difference time-domain (3D-FDTD) simulation. For practical application, the crystal violet (CV) as the carcinogenic dyes used widely in the aquaculture were detected with the LOD of 10(-)(10) M using our Ag@Cu@CW SERS substrate, suggested that the Ag@Cu@CW has a potential value in sensitive and quantitative detection of environment pollutant and chemical sensing.
机译：现在在纳米物理学中至关重要以制造优异的表面增强拉曼散射（海）基板，其提供用于获得强大局部电场的高密度'热点'。通过用DC的简单方法装饰Cicada Wing（CW）上的Cu和Ag纳米颗粒，通过简单的方法装饰含有均匀分布的纳米粒子，成功制造了敏感，大规模和低成本的夹层@ Cu @ CW SERS活性基板。磁控溅射系统。在增强因子（EF类似于3.1369×10（5））方面，研究了具有最佳Nanogaps的表面粗糙AG @ Cu @ Cu @ Cu @ Cu @ Cu @ Cu @ Cu @ Cu @ Cu @ Cu·CW衬底，检测限（10（ - 11）米为4 -ATP），相对标准偏差（RSD，<15％）和SAMPLETO样品重复性。由适当的纳米--AP和特定等离子体纳米结构形成的高密度'热点'将产生更强的局部电磁场，这也被3D有限差分时域（3D-FDTD）模拟确认。对于实际应用，用我们的AG @ Cu @ CW Sers基板用10（ - ）（10）米的LOD来检测晶体紫（CV）作为水产养殖中广泛使用的致癌染料，表明AG @ Cu @ CW对环境污染物和化学传感的敏感和定量检测具有潜在价值。

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  • 来源
    《Applied Surface Science》 |2019年第15期|879-886|共8页
  • 作者

    Yan Xiaoya; Wang Mingli; Sun Xin; Wang Yuhong; Shi Guochao; Ma Wanli; Hou Pei;

  • 作者单位

    Yanshan Univ Sch Sci State Key Lab Mat Sci & Technol Qinhuangdao 066004 Hebei Peoples R China|Yanshan Univ Sch Sci Key Lab Microstruct Mat Phys Hebei Prov Qinhuangdao 066004 Hebei Peoples R China;

    Yanshan Univ Sch Sci State Key Lab Mat Sci & Technol Qinhuangdao 066004 Hebei Peoples R China|Yanshan Univ Sch Sci Key Lab Microstruct Mat Phys Hebei Prov Qinhuangdao 066004 Hebei Peoples R China;

    Yanshan Univ Sch Sci State Key Lab Mat Sci & Technol Qinhuangdao 066004 Hebei Peoples R China|Yanshan Univ Sch Sci Key Lab Microstruct Mat Phys Hebei Prov Qinhuangdao 066004 Hebei Peoples R China;

    Yanshan Univ Sch Sci State Key Lab Mat Sci & Technol Qinhuangdao 066004 Hebei Peoples R China|Yanshan Univ Sch Sci Key Lab Microstruct Mat Phys Hebei Prov Qinhuangdao 066004 Hebei Peoples R China;

    Yanshan Univ Sch Sci State Key Lab Mat Sci & Technol Qinhuangdao 066004 Hebei Peoples R China|Yanshan Univ Sch Sci Key Lab Microstruct Mat Phys Hebei Prov Qinhuangdao 066004 Hebei Peoples R China;

    NC State Univ Dept Math Raleigh NC USA;

    Great Wall Motor Co Tianjin Havel Branch Tianjin Peoples R China;

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  • 正文语种 eng
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  • 关键词

    Surface-enhanced Raman scattering; Cicada wing; Ag@Cu@CW; Crystal violet; 4-Aminothiophenol;

    机译：表面增强拉曼散射;蝉翼;Ag @ Cu @ CW;水晶紫;4-氨基噻吩;

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