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Raman signal enhancement of low-cost metal sheet SERS with gold decoration |
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| รหัสดีโอไอ | |
| Creator | Nampueng PANGPAIBOON |
| Title | Raman signal enhancement of low-cost metal sheet SERS with gold decoration |
| Contributor | Kawinphob PHETNAM, Sukon KALASUNG, Chanunthorn CHANANONAWATHORN, Viyapol PATTHANASETTAKUL, Mati HORPRATHUM, Pitak EIAMCHAI, Noppadon NUNTAWONG, Saksorn LIMWICHEAN |
| Publisher | Metallurgy and Materials Science Research Institute Chulalongkorn University |
| Publication Year | 2564 |
| Journal Title | Journal of Metals, Materials and Minerals |
| Journal Vol. | 31 |
| Journal No. | 4 |
| Page no. | 33-39 |
| Keyword | Laser-engraved, Sputtering, Zinc SERS, Copper SERS, Low-cost SERS |
| ISSN | 0857-6149 |
| Abstract | Surface Enhance Raman Spectroscopy (SERS) is a sensitive surface creating plasmonic resonance for the Raman scattering. SERS is considered as a powerful technique to enhance the Raman signal, when quantity of sample is limited. Recently, our lab team has discovered a low-cost SERS template fabrication, laser-engraving method, which is suitable with gold nanoparticles decoration. In this work, two different materials, zinc, and copper, were used as metal sheet SERS substrate. Gold nanoparticles sputtered with 270 s of sputtering time were used as decorated noble metal. FE-SEM images illustrated the nano-in-microstructure of the engraved metal sheets. The decorated Au nanoparticles were uniform and fully cover on the rough metal sheet templates. From contact angle measurement with DI water, Zn/Au SERS provided the highest contact angle, which was 142.10 ฑ 0.51 degree. SERS performance, including Enhancement Factor (EF), Limit of Detection (LOD), and shelf-life were investigated. The EF values of Zn/Au SERS and Cu/Au SERS were 7.40 ด 109 and 1.70 ด 108, respectively. From LOD results, Zn/Au SERS presented the great ability to enhance the Raman signal at 10-7 molar concentration. However, after 90 days of shelf-life test, both showed the capability to enhance the Raman signal. |
