Journal
LANGMUIR
Volume 25, Issue 9, Pages 5266-5270Publisher
AMER CHEMICAL SOC
DOI: 10.1021/la803900w
Keywords
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Funding
- Korean Government [KRF-2005-005-J11902, KRF-C00050]
- Korea Science and Engineering Foundation [2008-04285, 2008-0060482]
- Wigner Fellowship Program
- Division of Chemical Sciences, Biosciences, and Geosciences, Office of Basic Energy Sciences, U.S. Department of Energy [DE-AC05-00OR22725]
- National Research Foundation of Korea [2008-04285, 2008-0060482] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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Alloy nanorods consisting of bimetallic gold and silver are synthesized by employing the electrochemical codeposition of Au/Ag alloy materials into the pores of anodized aluminum oxide templates. This paper presents the variation of localized surface plasmon resonance (LSPR) modes of the Au-x/Ag1-x alloy nanorods as a function of relative compositions of Au and Ag. Transverse and multiple longitudinal modes were observed when the length was longer than ca. 300 nm. For a given length, the transverse LSPR mode systematically blue-shifted as the Ag portion increased, while there was little variation in peak positions of the longitudinal LSPR modes. The optical properties of the Au-x/Ag1-x alloy nanorods were calculated using the discrete dipole approximation and showed a good agreement with the experimental measurements.
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