Fabrication, Optical Properties and SERS Spectra of Silver Semishells Arrays

Abstract:

Silver (Ag) semishells arrays were fabricated with a seed-mediated growth method by depositing silver films on top of self-assembly close-packed monolayer of SiO₂ nanoparticles. The surface morphologies and optical properties were characterized using TEM, SEM and UV-Vis spectroscopy. The surface-enhanced Raman scattering (SERS) activities of these nanostructures were investigated using methylene blue (MB) as probe molecule. The enhancement factor was estimated to be as large as 2.05×10¹⁰. The results revealed that these Silver nanostructures are good SERS-active substrates.

• Periodical: Advanced Materials Research (Volumes 399-401)
• Pages: 538-542
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.399-401.538
• Online since: November 2011
• Authors: Yun Fan, Shi Qing Man
• Keywords: Methylene Blue (MB), Seed-Mediated Growth Method, Silver Semishells Arrays, Surface Plasmon Resonance (SPR), Surface-Enhanced Raman Spectroscopy (SERS)

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