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

Published online by Cambridge University Press:  15 February 2011

Makoto Fujimaki ,
Yasuhiko Iwanabe ,
Koichi Awazu  and
Junji Tominaga
Makoto Fujimaki
Affiliation:
Center for Applied Near-Field Optics Research (CAN-FOR) National Institute of Advanced Industrial Science and Technology (AIST) Tsukuba Central 4, 1-1-1 Higashi, Tsukuba, 305-8562, Japan
Yasuhiko Iwanabe
Affiliation:
Graduate School of Engineering, Tokyo Denki University 2-2 Kanda, Chiyoda, Tokyo, 101-8457, Japan
Koichi Awazu
Affiliation:
Center for Applied Near-Field Optics Research (CAN-FOR) National Institute of Advanced Industrial Science and Technology (AIST) Tsukuba Central 4, 1-1-1 Higashi, Tsukuba, 305-8562, Japan
Junji Tominaga
Affiliation:
Center for Applied Near-Field Optics Research (CAN-FOR) National Institute of Advanced Industrial Science and Technology (AIST) Tsukuba Central 4, 1-1-1 Higashi, Tsukuba, 305-8562, Japan
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Abstract

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.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 876: Symposium A – Nanoporous and Nanostructured Materials for Catalysis, Sensor and Gas Separation Applications , 2005 , R7.9
Copyright
Copyright © Materials Research Society 2005

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