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题名:
Numerical study on the localized surface plasmon resonance of cone-shaped nanoparticles
作者: Ni, Zugao; Ren, Hao; Luo, Ji; Yao, Jun
刊名: JOURNAL OF MODERN OPTICS
出版日期: 2011
卷号: 58, 期号:17, 页码:1579-1584
关键词: localized surface plasmon resonance ; oblique angle ; cone-shaped nanoparticle ; refractive index sensitivity ; figure of merit ; sensing sensitivity
文章类型: Article
英文摘要: The effect of oblique angle on the localized surface plasmon resonance of cone-shaped nanoparticles is explored. The finite difference time domain method is applied to analyze the extinction spectra and the electric field intensity. The simulation results show that cone nanoparticles with a small oblique angle exhibit a larger resonant wavelength than those with a large oblique angle. The full width at half maximum initially decreases and then increases as the oblique angle increases, with a turning point of 17.5 degrees. The refractive index sensitivity and the sensing sensitivity both decrease when the oblique angle of the cone nanoparticles increases, achieving a maximum figure of merit (FOM) of 14.6 RIU(-1). For cone-shaped nanoparticles, the shape can be described by the power exponent m of the curve in the cross-section. The larger the power exponent m, the larger the oblique angle. Cone-shaped nanoparticles with power exponent m < 1 (concave conical surface) exhibit larger FOM than those with m > 1 (convex conical surface). The largest FOM is achieved when m = 1/3.
WOS标题词: Science & Technology ; Physical Sciences
类目[WOS]: Optics
研究领域[WOS]: Optics
关键词[WOS]: DIELECTRIC ENVIRONMENT ; SILVER NANOPARTICLES ; OPTICAL-PROPERTIES ; SPECTROSCOPY ; SENSITIVITY ; MONOLAYERS
收录类别: SCI
语种: 英语
WOS记录号: WOS:000295867000010
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内容类型: 期刊论文
URI标识: http://ir.ioe.ac.cn/handle/181551/3429
Appears in Collections:光电技术研究所被WoS收录文章_期刊论文

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作者单位: Chinese Acad Sci, Inst Opt & Elect, State Key Lab Opt Technol Microfabricat, Chengdu 610209, Peoples R China

Recommended Citation:
Ni, Zugao,Ren, Hao,Luo, Ji,et al. Numerical study on the localized surface plasmon resonance of cone-shaped nanoparticles[J]. JOURNAL OF MODERN OPTICS,2011,58(17):1579-1584.
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