[16p-WL2_101-1~11] 6.4 Thin films and New materials

2:45 PM - 3:00 PM JST(5:45 AM - 6:00 AM UTC)

[16p-WL2_101-6] Synthesis of Silver Nanoparticles on UV-PDMS Substrates for SERS Properties

〇(B)Shu Kawamura¹, Aoi Igari¹, Ryo Shoji¹, Mikio Ito¹, Lina Yoshida¹ (1.Natl. Inst. Tech, Tokyo Col.)

Keywords:

Surface Enhanced Raman Scattering,Silver Nanoparticles,UV-curable PDMS

Silver nanoparticles (AgNPs) were chemically deposited on the surface of photocurable PDMS films, and their surface-enhanced Raman scattering (SERS) properties were investigated. Spherical, polycrystalline AgNPs with an average diameter of approximately 20 nm were formed through a surface-confined reaction driven by reducing groups in the PDMS. The Raman signal intensity exhibited a nonlinear increase with increasing AgNP surface density, indicating localized electromagnetic field enhancement due to "Hot Spot" formation between densely and closely spaced AgNPs. Furthermore, the AgNP density and SERS performance were effectively tuned by controlling the reaction temperature, immersion time, and precursor concentration.