@article{PANGPAIBOON_PHETNAM_KALASUNG_CHANANONAWATHORN_PATTHANASETTAKUL_HORPRATHUM_EIAMCHAI_NUNTAWONG_LIMWICHEAN_2021, place={Bangkok, Thailand}, title={Raman Signal Enhancement of Low-Cost Metal Sheet SERS with Gold Decoration}, volume={31}, url={https://jmmm.material.chula.ac.th/index.php/jmmm/article/view/1133}, abstractNote={<p>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 10<sup>9</sup> and 1.70 x 10<sup>8</sup>, respectively. From LOD results, Zn+Au SERS presents the great ability to enhance the Raman signal at 10<sup>-7</sup> molar concentration. However, after 90 days of shelf-life test, both of them shows the capability to enhance the Raman signal.</p>}, number={4}, journal={Journal of Metals, Materials and Minerals}, author={PANGPAIBOON, NAMPUENG and PHETNAM, KAWINPHOB and KALASUNG, SUKON and CHANANONAWATHORN, CHANUNTHORN and PATTHANASETTAKUL, VIYAPOL and HORPRATHUM, MATI and EIAMCHAI, PITAK and NUNTAWONG, NOPPADON and LIMWICHEAN, SAKSORN}, year={2021}, month={Dec.}, pages={33–39} }