Au-Coated PDMS grating for SERS substrate: Comparison of two different grating depths

Surface enhanced Raman scattering substrate was an alternative analytical tool with ultrahigh sensitivity and rapid response for chemistry, medicine and forensics science. In this work, the surface enhanced Raman scattering (SERS) substrate based on PDMS grating structure created by laser interferen...

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Bibliographic Details
Published in:Journal of physics. Conference series 2020-01, Vol.1428 (1), p.12036
Main Authors: Ulum, A H, Destarina, L, Aminah, N S, Srisuai, N, Boonruang, S, Nuntawong, N, Horprathum, M, Djamal, M
Format: Article
Language:English
Subjects:
Excimer lasers
Excimers
Gold coatings
Magnetron sputtering
Methylene blue
Physics
Raman spectra
Substrates
Thin films
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Summary:Surface enhanced Raman scattering substrate was an alternative analytical tool with ultrahigh sensitivity and rapid response for chemistry, medicine and forensics science. In this work, the surface enhanced Raman scattering (SERS) substrate based on PDMS grating structure created by laser interference lithography using excimer laser modification and further 80 nm-thick Au thin film deposition by dc magnetron sputtering was proposed. We investigated the effect of the grating depth on SERS performance. The methylene blue solution of different concentration was employed to test the SERS performance using the portable Raman spectrometer. The optimal SERS performance can be optimized by fabricating the PDMS grating structure with 850 nm-period, 310 nm-depth and 0.5-filling factor.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/1428/1/012036