Broadband SERS detection with disordered plasmonic hybrid aggregates.

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ID: 66499
2019
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Abstract
Plasmonic nanostructures possessing broadband intense field enhancement over a large area are highly desirable for nanophotonic and plasmonic device applications. In this study, 3D Ag hybrid nanoaggregates (3D-Ag-HNAs) are achieved via a highly efficient oblique angle gas-phase cluster beam deposition method. Not only can such structures produce a high density of plasmonic hot-spots to improve Raman sensitivity, but more importantly they generate kissing point-geometric singularities with a broadband optical response. We succeed in obtaining an experimental SERS enhancement factor beyond 4 × 107 in the visible range, providing an optimal sensing platform for different analytes. Combined with good uniformity, reproducibility and ease of fabrication, our 3D-Ag-HNA offers a candidate for new generations of SERS systems.
Reference Key
mao2019broadbandnanoscale Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Mao, Peng;Liu, Changxu;Chen, Qiang;Han, Min;Maier, Stefan A;Zhang, Shuang;
Journal Nanoscale
Year 2019
DOI
10.1039/c9nr08118f
URL
Keywords
functionalization optical biosensors label-free imaging porous silicon

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