High sensitivity and homogeneity of surface enhanced Raman scattering on three-dimensional array–film hybrid platform
We design and fabricate a substrate based on a three-dimensional array–film hybrid structure used for surface enhanced Raman scattering (SERS). This substrate exhibits improvements both in sensitivity and homogeneity for the Raman signals. As a result, the substrate increases the Raman signal of Rho...
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Veröffentlicht in: | Applied physics letters 2017-02, Vol.110 (8) |
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Hauptverfasser: | , , , , , , , |
Format: | Artikel |
Sprache: | eng |
Online-Zugang: | Volltext |
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Zusammenfassung: | We design and fabricate a substrate based on a three-dimensional array–film hybrid structure used for surface enhanced Raman scattering (SERS). This substrate exhibits improvements both in sensitivity and homogeneity for the Raman signals. As a result, the substrate increases the Raman signal of Rhodamine 6G by 12.3 times under the same measurement conditions, compared with conventional gold array sitting directly on a silica wafer. The sensitivity of SERS can be easily tuned by changing the thickness of SiO2 separation. Meanwhile, the relative standard deviations are achieved to be less than 10%. This array–film hybrid structure provides a promising approach for future SERS applications. |
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ISSN: | 0003-6951 1077-3118 |
DOI: | 10.1063/1.4977424 |