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首页> 外文期刊>Journal of Materials Chemistry, A. Materials for energy and sustainability >Multi-hot spot configuration on urchin-like Ag nanoparticle/ZnO hollow nanosphere arrays for highly sensitive SERS
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Multi-hot spot configuration on urchin-like Ag nanoparticle/ZnO hollow nanosphere arrays for highly sensitive SERS

机译：海胆状Ag纳米颗粒/ ZnO空心纳米球阵列上的多热点配置，用于高度敏感的SERS

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摘要

Urchin-like Ag nanoparticle (NP)/ZnO Inollow nanosphere (HNS) arrays were fabricated employing a simple, low cost and wafer scale method consisting of nanosphere lithography (NSL) and solution processes. This three-dimensional (3D) multi-hot spot decorated nanocomposite presents an as high as 10~8 Raman enhancement using Rhodamine 6G (R6G) as the probe with the concentration down to 10~(-10) M. The high density hot spots in a unit area and strong field intensity around each individual hot spot in 3D layout are believed to be the major reasons for this high sensitivity Raman phenomenon, which is further proved by the theoretical simulation results. Given its high Raman sensitivity and good reproducibility in a large area, this urchin-like Ag NP/ZnO HNS hybrid nanoarray can be reasonably proposed to be used as a SERS substrate In practical applications, including bio-sensing, materials characterization, environmental science and so on.
机译：采用简单，低成本和晶圆级方法制造的Urchin状银纳米颗粒（NP）/ ZnO Inollow纳米球（HNS）阵列由纳米球光刻（NSL）和溶液工艺组成。使用罗丹明6G（R6G）作为探针，浓度低至10〜（-10）M的三维（3D）多热点装饰纳米复合材料可呈现高达10〜8的拉曼增强效果。高密度热点理论上的模拟结果进一步证明了这种高灵敏度拉曼现象产生的主要原因是在3D布局中每个单位区域内的高场强和围绕每个热点的强场强。鉴于其高拉曼灵敏度和大面积的良好重现性，可以合理地提出这种类似顽童的Ag NP / ZnO HNS杂化纳米阵列用作SERS基质。在实际应用中，包括生物传感，材料表征，环境科学和以此类推。

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