Ultrabroadband Metasurface for Efficient Light Trapping and Localization: A Universal Surface-Enhanced Raman Spectroscopy Substrate for "All" Excitation Wavelengths

Nan Zhang; Kai Liu; Zhejun Liu; Haomin Song; Xie Zeng; Dengxin Ji; Alec Cheney; Suhua Jiang; Qiaoqiang Gan

doi:10.1002/admi.201500142

Ultrabroadband Metasurface for Efficient Light Trapping and Localization: A Universal Surface-Enhanced Raman Spectroscopy Substrate for "All" Excitation Wavelengths

Nan Zhang, Kai Liu, Zhejun Liu, Haomin Song, Xie Zeng, Dengxin Ji, Alec Cheney, Suhua Jiang^*, Qiaoqiang Gan

^*Corresponding author for this work

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

61 Citations (Scopus)

Abstract

Most reported surface-enhanced Raman spectroscopy (SERS) substrates can work for individual excitation wavelengths only. Therefore, different substrates have to be used for different excitation wavelengths, which consumes more biological/chemical materials, substrates, and measurement time. Here, an ultrabroadband super absorbing metasurface that can work as a universal substrate for low cost and high performance SERS sensing is reported. Due to broadband light trapping and localized field enhancement, this structure can work for almost "all" available laser lines from 450 to 1100 nm. This predicted feature is validated by SERS experiment using five different excitation laser lines, obtaining a high enhancement factor of 5.3 × 10⁷ and very good uniformity over large areas.

Original language	English
Article number	1500142
Journal	Advanced Materials Interfaces
Volume	2
Issue number	10
DOIs	https://doi.org/10.1002/admi.201500142
Publication status	Published - 1 Jul 2015
Externally published	Yes

Keywords

light trapping
localization
surface-enhanced Raman spectroscopy
ultrabroadband metasurfaces

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10.1002/admi.201500142

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abstract = "Most reported surface-enhanced Raman spectroscopy (SERS) substrates can work for individual excitation wavelengths only. Therefore, different substrates have to be used for different excitation wavelengths, which consumes more biological/chemical materials, substrates, and measurement time. Here, an ultrabroadband super absorbing metasurface that can work as a universal substrate for low cost and high performance SERS sensing is reported. Due to broadband light trapping and localized field enhancement, this structure can work for almost {"}all{"} available laser lines from 450 to 1100 nm. This predicted feature is validated by SERS experiment using five different excitation laser lines, obtaining a high enhancement factor of 5.3 × 107 and very good uniformity over large areas.",

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T2 - A Universal Surface-Enhanced Raman Spectroscopy Substrate for "All" Excitation Wavelengths

AU - Zhang, Nan

AU - Liu, Kai

AU - Liu, Zhejun

AU - Song, Haomin

AU - Zeng, Xie

AU - Ji, Dengxin

AU - Cheney, Alec

AU - Jiang, Suhua

AU - Gan, Qiaoqiang

PY - 2015/7/1

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N2 - Most reported surface-enhanced Raman spectroscopy (SERS) substrates can work for individual excitation wavelengths only. Therefore, different substrates have to be used for different excitation wavelengths, which consumes more biological/chemical materials, substrates, and measurement time. Here, an ultrabroadband super absorbing metasurface that can work as a universal substrate for low cost and high performance SERS sensing is reported. Due to broadband light trapping and localized field enhancement, this structure can work for almost "all" available laser lines from 450 to 1100 nm. This predicted feature is validated by SERS experiment using five different excitation laser lines, obtaining a high enhancement factor of 5.3 × 107 and very good uniformity over large areas.

AB - Most reported surface-enhanced Raman spectroscopy (SERS) substrates can work for individual excitation wavelengths only. Therefore, different substrates have to be used for different excitation wavelengths, which consumes more biological/chemical materials, substrates, and measurement time. Here, an ultrabroadband super absorbing metasurface that can work as a universal substrate for low cost and high performance SERS sensing is reported. Due to broadband light trapping and localized field enhancement, this structure can work for almost "all" available laser lines from 450 to 1100 nm. This predicted feature is validated by SERS experiment using five different excitation laser lines, obtaining a high enhancement factor of 5.3 × 107 and very good uniformity over large areas.

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KW - localization

KW - surface-enhanced Raman spectroscopy

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Ultrabroadband Metasurface for Efficient Light Trapping and Localization: A Universal Surface-Enhanced Raman Spectroscopy Substrate for "All" Excitation Wavelengths

Abstract

Keywords

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