TY - JOUR AU - PANGPAIBOON, NAMPUENG AU - PHETNAM, KAWINPHOB AU - KALASUNG, SUKON AU - CHANANONAWATHORN, CHANUNTHORN AU - PATTHANASETTAKUL, VIYAPOL AU - HORPRATHUM, MATI AU - EIAMCHAI, PITAK AU - NUNTAWONG, NOPPADON AU - LIMWICHEAN, SAKSORN PY - 2021/12/16 Y2 - 2024/03/29 TI - Raman Signal Enhancement of Low-Cost Metal Sheet SERS with Gold Decoration JF - Journal of Metals, Materials and Minerals JA - J Met Mater Miner VL - 31 IS - 4 SE - Original Research Articles DO - UR - https://jmmm.material.chula.ac.th/index.php/jmmm/article/view/1133 SP - 33-39 AB - <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> ER -