Raman Signal Enhancement of Low-Cost Metal Sheet SERS with Gold Decoration

Authors

• Nampueng Pangpaiboon
• Kawinphob Phetnam
• Sukon Kalasung
• Chanunthorn Chananonawathorn
• Viyapol Patthanasettakul
• Mati Horprathum
• Pitak Eiamchai
• Noppadon Nuntawong
• Saksorn Limwichean

Publication Date

2021

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, are used as metal sheet SERS substrate. Gold nanoparticles sputtered with 270 s of sputtering time are used as decorated noble metal. FE-SEM images illustrate the nano-in-microstructure of the engraved metal sheets. The decorated Au nanoparticles are uniform and fully cover on the rough metal sheet templates. From contact angle measurement with DI water, Zn+Au SERS provides the highest contact angle, which is 142.10 ± 0.51 degree. SERS performance, including Enhancement Factor (EF), Limit of Detection (LOD), and shelf-life are investigated. The EF values of Zn+Au SERS and Cu+Au SERS are 7.40 x 109 and 1.70 x 108, respectively. From LOD results, Zn+Au SERS presents the great ability to enhance the Raman signal at 10-7 molar concentration. However, after 90 days of shelf-life test, both of them shows the capability to enhance the Raman signal.

First Page

33

Last Page

39

Recommended Citation

Pangpaiboon, Nampueng; Phetnam, Kawinphob; Kalasung, Sukon; Chananonawathorn, Chanunthorn; Patthanasettakul, Viyapol; Horprathum, Mati; Eiamchai, Pitak; Nuntawong, Noppadon; and Limwichean, Saksorn (2021) "Raman Signal Enhancement of Low-Cost Metal Sheet SERS with Gold Decoration," Journal of Metals, Materials and Minerals: Vol. 31: No. 4, Article 4.
Available at: https://digital.car.chula.ac.th/jmmm/vol31/iss4/4