2011 Fiscal Year Final Research Report
Photoelectrochemical properties of metal nanostructures and their arrays
| Project/Area Number |
22750169
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
Functional materials/Devices
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| Research Institution | Nagoya University |
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Principal Investigator |
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| Project Period (FY) |
2010 – 2011
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| Keywords | 金属ナノ粒子 / 金ナノフレーム / 金ナノリングアレイ / プラズモン / 自己組織化 / 電気化学析出 / 光電変換 |
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| Research Abstract |
Metal nanostructures have attracted much attention because they exhibit unique optical properties depended on their size and shape. In particular, an electric field is significantly enhanced at sharp ends of nanostructures by the localized surface plasmon resonance(SPR). Individual nanostructures display distinct optical scattering spectra and their assembly with close-packed structures can strongly couple to external electromagnetic fields. Previously, we have successfully prepared the cubic gold nanoframe by a site-selective electrochemical deposition technique. In order to fabricate Au nanoframe array, it is necessary to assemble silver(Ag) nanocubes used as a template for nanoframes in a desired structure on an electrode. In this study, we demonstrate the bottom-up assembly of Ag nanocubes into macroscopic two-dimensional superlattices. Furthermore, a two-dimensional assembled structure, gold nanoring array, was also prepared by evaporation of solvent on a glass substrate after spread of a mixed dispersion of polystyrene beads and gold nanoparticles.
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