Gold@silver bimetal nanoparticles/pyramidal silicon 3D substrate with high reproducibility for high-performance SERS.
Gold@silver bimetal nanoparticles/pyramidal silicon 3D substrate with high reproducibility for high-performance SERS.
复制标题
金@银双金属纳米粒子/金字塔硅3D基底具有高重现性，可实现高性能SERS
DOI：
10.1038/srep25243
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发表时间：
2016-05-04
影响因子：
4.6
通讯作者：
Man BY
中科院分区：
文献类型：
--
作者：
Zhang C;Jiang SZ;Yang C;Li CH;Huo YY;Liu XY;Liu AH;Wei Q;Gao SS;Gao XG;Man BY
提出了一种新型高效的表面增强拉曼散射（Sers）基底，该基底基于金@银/锥硅三维基底（Au@Ag/3D-Si）。结合Ag的Sers活性、Au的化学稳定性和3D-Si的大场增强效应，Au@Ag/3D-Si基底具有良好的灵敏度、均匀性、重现性和化学稳定性。以R6 G为探针分子，Sers结果表明，Au@Ag/3D-Si衬底上级3D-Si、Ag/3D-Si和Au/3D-Si衬底。我们还通过商业COMSOL软件从理论上证实了这些优异的行为。相应的实验和理论结果表明，我们提出的Au@Ag/3D-Si基底有望为生物传感器、生物医学诊断和食品安全等领域的无标记Sers检测提供新的机会。
A novel and efficient surface enhanced Raman scattering (SERS) substrate has been presented based on Gold@silver/pyramidal silicon 3D substrate (Au@Ag/3D-Si). By combining the SERS activity of Ag, the chemical stability of Au and the large field enhancement of 3D-Si, the Au@Ag/3D-Si substrate possesses perfect sensitivity, homogeneity, reproducibility and chemical stability. Using R6G as probe molecule, the SERS results imply that the Au@Ag/3D-Si substrate is superior to the 3D-Si, Ag/3D-Si and Au/3D-Si substrate. We also confirmed these excellent behaviors in theory via a commercial COMSOL software. The corresponding experimental and theoretical results indicate that our proposed Au@Ag/3D-Si substrate is expected to develop new opportunities for label-free SERS detections in biological sensors, biomedical diagnostics and food safety.