Hotspot-engineered quasi-3D metallic network for surface-enhanced Raman scattering based on colloid monolayer templating
Hotspot-engineered quasi-3D metallic network for surface-enhanced Raman scattering based on colloid monolayer templating
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基于胶体单层模板的热点工程准 3D 金属网络表面增强拉曼散射
DOI：
10.1063/1.4963000
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发表时间：
2016-09
影响因子：
4
通讯作者：
Wang, Zhenlin
中科院分区：
文献类型：
--
作者：
Liu, Fanxin;Liu, Fanxin;Wang, Zhenlin;Wang, Zhenlin
利用非紧密堆积胶体单层模板和金属物理沉积相结合的方法制备了高质量的表面增强拉曼散射(SERS)衬底，设计了一种具有可控纳米隙的热点工程准3D金属网络。SERS效应主要来源于邻近金属帽与微小空隙之间以及金属帽与基板上金属凸起之间的超小间隙产生的强烈局域电场增强，数值模拟证实了这一点。通过将纳米间隙尺寸优化到10 nm以下，获得了高达1.5 ×SERS 108的显著平均表面增强拉曼增强因子和10.5%的表面增强拉曼强度，从而获得了良好的拉曼检测能力，表现为清晰识别的罗丹明6G溶液的表面增强拉曼信号，浓度为1 nm。
A hotspot-engineered quasi-3D metallic network with controllable nanogaps is purposed as a high-quality surface-enhanced Raman scattering (SERS) substrate, which is prepared by a combination of non-close-packed colloid monolayer templating and metal physical deposition. The significant SERS effect arises from a strongly enhanced local electric field originating from the ultra-small-gaps between neighboring metal-caps and tiny interstices and between the metal-caps and the metal-bumps on the base, which is recognized by the numerical simulation. A remarkable average SERS enhancement factor of up to 1.5 × 108 and a SERS intensity relative standard deviation (RSD) of 10.5% are achieved by optimizing the nanogap size to sub-10 nm scale, leading to an excellent capability for Raman detection, which is represented by the clearly identified SERS signal of the Rhodamine 6G solution with a fairly low concentration of 1 nM.
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影响因子：
64.8
作者：
J. F. Li;Yi Fan Huang;Yong Ding;Zhi-Lin Yang;S. Li;Xiao Shun Zhou;F. Fan;Wei Zhang;Z. Zho
通讯作者：
J. F. Li;Yi Fan Huang;Yong Ding;Zhi-Lin Yang;S. Li;Xiao Shun Zhou;F. Fan;Wei Zhang;Z. Zho
影响因子：
56.9
作者：
Fang, Ying;Seong, Nak-Hyun;Dlott, Dana D.
通讯作者：
Dlott, Dana D.
影响因子：
8.6
作者：
Xu, HX;Bjerneld, EJ;Börjesson, L
通讯作者：
Börjesson, L
影响因子：
2.5
作者：
Yongjun Zhang;Wenting Gao;Shuo Yang;S. S. Liu-S.;Xiaoyu Zhao;M. Gao;Yaxin Wang;Jinghai Yang
通讯作者：
Yongjun Zhang;Wenting Gao;Shuo Yang;S. S. Liu-S.;Xiaoyu Zhao;M. Gao;Yaxin Wang;Jinghai Yang
影响因子：
13.3
作者：
Chen, Aiqing;DePrince, A. Eugene, III;Vlasko-Vlasov, Vitalii K.
通讯作者：
Vlasko-Vlasov, Vitalii K.