Broadband SERS detection with disordered plasmonic hybrid aggregates

Peng Mao; Changxu Liu; Qiang Chen; Min Han; Stefan Maier; Shuang Zhang

doi:10.1039/C9NR08118F

Broadband SERS detection with disordered plasmonic hybrid aggregates

Peng Mao, Changxu Liu^*, Qiang Chen^*, Min Han, Stefan Maier^*, Shuang Zhang^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

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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.

Original language	English
Pages (from-to)	93-102
Number of pages	11
Journal	Nanoscale
Volume	12
Issue number	1
Early online date	14 Oct 2019
DOIs	https://doi.org/10.1039/C9NR08118F
Publication status	Published - 7 Jan 2020
Externally published	Yes

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title = "Broadband SERS detection with disordered plasmonic hybrid aggregates",

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. ",

author = "Peng Mao and Changxu Liu and Qiang Chen and Min Han and Stefan Maier and Shuang Zhang",

note = "This work was supported by the National Natural Science Foundation of China (Grant No. 11604161), the Jiangsu Provincial Natural Science Foundation (Grant No. BK20160914), Universities Natural Sciences Foundation of Jiangsu Province (Grant No. 16KJB140009), the Natural Science Foundation of Nanjing University of Posts and Telecommunications (Grant No. NY216012), the European Union's Horizon 2020 research and innovation programme under the Marie Sk{\l}odowska-Curie Grant (Grant No. 752102), H2020 European Research Council Project No. 734578 (D-SPA) and 648783 (TOPOLOGICAL), the Leverhulme Trust (Grant No. RPG-2012-674), the Royal Society, the Wolfson Foundation and the 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 Sk{\l}odowska-Curie Grant Agreement No. 754388 (LMU Research Fellows) and from LMU Munich's Institutional Strategy LMU excellent within the framework of the German Excellence Initiative (No. ZUK22), Deutsche Forschungsgemeinschaft Cluster of Excellence e-conversion.",

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doi = "10.1039/C9NR08118F",

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AU - Liu, Changxu

AU - Chen, Qiang

AU - Han, Min

AU - Maier, Stefan

AU - Zhang, Shuang

N1 - This work was supported by the National Natural Science Foundation of China (Grant No. 11604161), the Jiangsu Provincial Natural Science Foundation (Grant No. BK20160914), Universities Natural Sciences Foundation of Jiangsu Province (Grant No. 16KJB140009), the Natural Science Foundation of Nanjing University of Posts and Telecommunications (Grant No. NY216012), the European Union's Horizon 2020 research and innovation programme under the Marie Skłodowska-Curie Grant (Grant No. 752102), H2020 European Research Council Project No. 734578 (D-SPA) and 648783 (TOPOLOGICAL), the Leverhulme Trust (Grant No. RPG-2012-674), the Royal Society, the Wolfson Foundation and the 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 Skłodowska-Curie Grant Agreement No. 754388 (LMU Research Fellows) and from LMU Munich's Institutional Strategy LMU excellent within the framework of the German Excellence Initiative (No. ZUK22), Deutsche Forschungsgemeinschaft Cluster of Excellence e-conversion.

PY - 2020/1/7

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N2 - 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.

AB - 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.

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Broadband SERS detection with disordered plasmonic hybrid aggregates

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