DGIST Scholar: Dewetted gold nanoparticles on ZnO nanorods for three-dimensionally distributed plasmonic hot spots

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Dewetted gold nanoparticles on ZnO nanorods for three-dimensionally distributed plasmonic hot spots

Title: Dewetted gold nanoparticles on ZnO nanorods for three-dimensionally distributed plasmonic hot spots

Author(s): Yoo, J[Yoo, Jinho] ; Kim, JH[Kim, Jae-Hyun] ; Lee, K[Lee, Kyungjun] ; Lee, S[Lee, Sangrnin] ; Kim, S[Kim, Sunghan] ; Park, HK[Park, Hyun-Kyu] ; Kim, SW[Kim, Sang-Woo] ; Bae, J[Bae, Jihyun] ; Park, JJ[Park, Jong-Jin] ; Choi, D[Choi, Dukhyun]

Subject: Annealing ; De-Wetting Process ; Gold ; Gold Nanoparticles ; High-Throughput ; Light Absorption ; Localized Surface Plasmon Resonance (LSPR) ; Metal Nanoparticles ; Nano-Structures ; Nanorods ; Nanostructure ; Optical Absorption ; Plasmonic Hot Spots ; Plasmonic Nanostructures ; Plasmonics ; Plasmons ; Surface Plasmon Resonance ; Zinc Oxide ; Zinc Oxide Nanorods

Abstract: We report the importance of a three-dimensional plasmonic nanostructure for the increased spatial distribution of plasmonic hot spots, and its effective and high-throughput fabrication via a dewetting process. Gold is thermally vapor deposited on zinc oxide nanorods. Dewetted gold nanoparticles are self-assembled on the top and sides of the ZnO nanorods, thus creating three-dimensionally dispersed plasmonic probes. The size of the dewetted nanoparticles is tuned by varying the gold thickness. Localized surface plasmon resonance became red-shifted as the size of the gold nanoparticles increased. © 2013 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.