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Physically Self-assembled Au Nanorod Arrays for SERS

Published online by Cambridge University Press:  01 February 2011

Motofumi Suzuki ,
Kaoru Nakajima ,
Kenji Kimura ,
Takao Fukuoka  and
Yasushige Mori
Motofumi Suzuki
Affiliation:
m-snki@mbox.kudpc.kyoto-u.ac.jp, Kyoto University, Department of Micro Engineering, Yoshida, Sakyo, Kyoto, 606-8501, Japan, +81-75-753-5196, +81-75-753-5196
Kaoru Nakajima
Affiliation:
Kyoto University, Kyoto, 606-8501, Japan
Kenji Kimura
Affiliation:
Kyoto University, Kyoto, 606-8501, Japan
Takao Fukuoka
Affiliation:
JST Kyoto Pref. CREATE, Seika, Kyoto, 619-0237, Japan
Yasushige Mori
Affiliation:
Doshisha University, Kyotanabe, Kyoto, 610-0394, Japan
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Abstract

We have demonstrated surface-enhanced Raman spectroscopy on arrays of Au nanorods aligned in line by a dynamic oblique deposition technique. For the light polarized along the major axis of the nanorods, the plasma resonance of the Au nanorods has been tuned to a wavelength suitable for Raman spectroscopy. The Raman scattering on the discrete nanorods is enhanced significantly compared with that on semi continuous Au films. Since the preparation process is physically bottom-up, it is robust in its selection of the materials and is useful in providing the SERS sensors at low cost.

Keywords

thin filmnanostructureAu

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References

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