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Formation and Molecular Sensing Property of Silver Nanoparticles from Sputtered Silver Oxide Layers

  • Makoto Fujimaki (a1), Yasuhiko Iwanabe (a2), Koichi Awazu (a1) and Junji Tominaga (a1)

Surface-enhanced Raman scattering (SERS) efficiency of silver nanoparticles formed by laser irradiation or thermal annealing in sputtered silver oxide layers was examined. Silver nanoparticles formed by irradiation of He-Ne laser light (632.8 nm) to a sputtered silver oxide thin film thermally annealed at 300°C show good SERS, while silver nanoparticles formed by thermal annealing at 600°C scarcely show SERS. From these results, it is deduced that thermal annealing at a proper temperature results in formation of silver nuclei that can be precursors of silver nanoparticles with desirable sizes to induce the SERS, while thermal annealing at a higher temperature results in the formation of large silver particles that no longer cause the SERS.

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MRS Online Proceedings Library (OPL)
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  • EISSN: 1946-4274
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