期刊
NANOSCALE
卷 12, 期 1, 页码 93-102出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c9nr08118f
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资金
- National Natural Science Foundation of China [11604161]
- Jiangsu Provincial Natural Science Foundation [BK20160914]
- Universities Natural Sciences Foundation of Jiangsu Province [16KJB140009]
- Natural Science Foundation of Nanjing University of Posts and Telecommunications [NY216012]
- European Union's Horizon 2020 research and innovation programme under the Marie Sklodowska-Curie Grant [752102]
- European Research Council [734578, 648783]
- Leverhulme Trust [RPG-2012-674]
- Royal Society
- Wolfson Foundation
- Engineering and Physical Sciences Research Council [EP/J018473/1]
- European Union's Framework Programme for Research and Innovation Horizon 2020 (2014-2020) under the Marie Sklodowska-Curie Grant [754388]
- LMU Munich's Institutional Strategy LMU, Deutsche Forschungsgemeinschaft Cluster of Excellence e-conversion [ZUK22]
- EPSRC [EP/J018473/1] Funding Source: UKRI
- Marie Curie Actions (MSCA) [752102] Funding Source: Marie Curie Actions (MSCA)
- European Research Council (ERC) [648783] Funding Source: European Research Council (ERC)
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 x 10(7) 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.
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