A Hierarchically Ordered Array of Silver-Nanorod Bundles for Surface-Enhanced Raman Scattering Detection of Phenolic Pollutants.

Zhu, Chuhong; Meng, Guowen; Zheng, Peng; Huang, Qing; Li, Zhongbo; Hu, Xiaoye; Wang, Xiujuan; Huang, Zhulin et al. · Adv Mater · 2016

basic_science · Level V

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Abstract

A hierarchically ordered array of Ag-nanorod bundles is achieved using an inexpensive binary-template-assisted electrodeposition technique. In every bundle, many small gaps are formed between adjacent Ag-nanorods, where "hot spots" are generated. As a result, this plasmonic nanostructure exhibits SERS enhancements of approximately eight orders of magnitude with uniform and reproducible SERS signal throughout the whole chip.