| Electric Field Enhancement of Nano Gap of Silver Prisms |
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| 作者姓名： | KENZO Yamaguchi TOMOHIRO Inoue MASAMITSU Fujii MASANOBU Haraguchi TOSHIHIRO Okamoto MASUO Fukui SHU Seki SEIICHI Tagawa |
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| 作者单位： | [1]Department of Optical Science and Engineering, Faculty and School of Engineering, The University of Tokushima, 2-1 Minamijosanjima-cho, Tokushima-city, Tokushima 770-8506, Japan [2]Department of Electronics and Mechanics, Toba National College of Maritime Technology, 1-1 Ikegami-cho, Toba-city, Mie 517-8501, Japan [3]Institute of Scientific and Industrial Research, Osaka University, 8-1 Mihogaoka, Ibaraki, Osaka 567-0047, Japan |
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| 摘 要： | Using numerical calculation, we examine the effects of gap distance of a pair of nano gap silver prisms with rounded corners on the local light intensity enhancement. Two peaks due to localized surface plasmon （LSP） excitation are observed in a wavelength range from 900nm to 300nm. The results demonstrate that peaks at a longer and a shorter wavelength corresponded to dipole-like and quadrupole-like LSP resonances, respectively. It is found that a gap distance up to 20 nm provides larger light intensity enhancement than that of a single silver nano prism with rounded corners. Furthermore, nano gap silver prisms are fabricated by direct focused ion beam processing, and we measure the scattering light spectrum of a pair of nano prisms by a confocal optical system. However, the two LSP peaks are not observed in visible range because the sizes of the nano gap and prisms are too large.
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| 关 键 词： | 纳米气体 银柱 电子领域 电子技术 |
| 收稿时间： | 2007-6-13 |
| 修稿时间： | 2007-06-13 |
Electric Field Enhancement of Nano Gap of Silver Prisms |
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| KENZO Yamaguchi TOMOHIRO Inoue MASAMITSU Fujii MASANOBU Haraguchi TOSHIHIRO Okamoto MASUO Fukui SHU Seki SEIICHI Tagawa.Electric Field Enhancement of Nano Gap of Silver Prisms[J].Chinese Physics Letters,2007,24(10):2934-2937. |
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| Authors: | KENZO Yamaguchi TOMOHIRO Inoue MASAMITSU Fujii MASANOBU Haraguchi TOSHIHIRO Okamoto MASUO Fukui SHU Seki SEIICHI Tagawa |
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| Institution: | 1.Department of Optical Science and Engineering, Faculty and School of Engineering, The University of Tokushima, 2-1 Minamijosanjima-cho, Tokushima-city, Tokushima 770-8506, Japan ;2.Department of Electronics and Mechanics, Toba National College of Maritime Technology, 1-1 Ikegami-cho, Toba-city, Mie 517-8501, Japan a Institute of Scientitic and Industrial Research, Osaka University, 8-1 Mihogaoka, Ibaraki, Osaka 567-0047, Japan |
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| Abstract: | Using numerical calculation, we examine the effects of gap distance of a pair of nano gap silver prisms with rounded corners on the local light intensity enhancement. Two peaks due to localized surface plasmon (LSP) excitation are observed in a wavelength range from 900nm to 300nm. The results demonstrate that peaks at a longer and a shorter wavelength corresponded to dipole-like and quadrupole-like LSP resonances, respectively. It is found that a gap distance up to 20nm provides larger light intensity enhancement than that of a single silver nano prism with rounded corners. Furthermore, nano gap silver prisms are fabricated by direct focused ion beam processing, and we measure the scattering light spectrum of a pair of nano prisms by aconfocal optical system. However, the two LSP peaks are not observed invisible range because the sizes of the nano gap and prisms are too large. |
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| Keywords: | 73 20 Mf 63 20 Pw |
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