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Numerical study on the localized surface plasmon resonance of cone-shaped nanoparticles
Ni Zugao; Ren Hao; Luo Ji; Yao Jun; Ni ZG (Ni Zugao)
Source PublicationJOURNAL OF MODERN OPTICS
Volume58Issue:18Pages:1579-1584
2011
Language英语
Subtype期刊论文
AbstractThe 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.; 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.
Document Type期刊论文
Identifierhttp://ir.ioe.ac.cn/handle/181551/6762
Collection微细加工光学技术国家重点实验室(开放室)
Corresponding AuthorNi ZG (Ni Zugao)
Affiliation中国科学院光电技术研究所
Recommended Citation
GB/T 7714
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(18):1579-1584.
APA Ni Zugao,Ren Hao,Luo Ji,Yao Jun,&Ni ZG .(2011).Numerical study on the localized surface plasmon resonance of cone-shaped nanoparticles.JOURNAL OF MODERN OPTICS,58(18),1579-1584.
MLA Ni Zugao,et al."Numerical study on the localized surface plasmon resonance of cone-shaped nanoparticles".JOURNAL OF MODERN OPTICS 58.18(2011):1579-1584.
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