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首页> 外文期刊>Nanotechnology >Highly efficient nanoplasmonic SERS on cardboard packaging substrates
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Highly efficient nanoplasmonic SERS on cardboard packaging substrates

机译：纸板包装基材上的高效纳米等离子体SERS

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摘要

This work reports on highly efficient surface enhanced Raman spectroscopy (SERS) constructed on low-cost, fully recyclable and highly reproducible cardboard plates, which are commonly used as disposable packaging material. The active optical component is based on plasmonic silver nanoparticle structures separated from the metal surface of the cardboard by a nanoscale dielectric gap. The SERS response of the silver (Ag) nanoparticles of various shapes and sizes were systematically investigated, and a Raman enhancement factor higher than 10~6 for rhodamine 6G detection was achieved. The spectral matching of the plasmonic resonance for maximum Raman enhancement with the optimal local electric field enhancement produced by 60 nm-sized Ag NPs predicted by the electromagnetic simulations reinforces the outstanding results achieved. Furthermore, the nanoplasmonic SERS substrate exhibited high reproducibility and stability. The SERS signals showed that the intensity variation was less than 5%, and the SERS performance could be maintained for up to at least 6 months.
机译：这项工作报告了一种高效的表面增强拉曼光谱仪（SERS），该光谱仪是在低成本，可完全回收利用和可高度再现的纸板上制成的，这些纸板通常用作一次性包装材料。有源光学组件基于通过纳米级介电间隙与纸板金属表面隔开的等离激元银纳米颗粒结构。系统地研究了各种形状和大小的银（Ag）纳米粒子的SERS响应，并实现了若丹明6G检测的拉曼增强因子大于10〜6。通过电磁模拟预测，由60 nm尺寸的Ag NP产生的等离子体共振的光谱匹配可实现最大的拉曼增强和最佳的局部电场增强，从而增强了出色的结果。此外，纳米等离子体SERS底物显示出高再现性和稳定性。 SERS信号显示强度变化小于5％，并且SERS性能可以维持至少6个月。

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