Changchun Institute of Optics,Fine Mechanics and Physics,CAS
Tunable Dipole Surface Plasmon Resonances of Silver Nanoparticles by Cladding Dielectric Layers | |
Liu, X. T.; D. B. Li; X. J. Sun; Z. M. Li; H. Song; H. Jiang and Y. R. Chen | |
2015 | |
发表期刊 | Scientific Reports |
卷号 | 5页码:7 |
摘要 | The tunability of surface plasmon resonance can enable the highest degree of localised surface plasmon enhancement to be achieved, based on the emitting or absorbing wavelength. In this article, tunable dipole surface plasmon resonances of Ag nanoparticles (NPs) are realized by modification of the SiO2 dielectric layer thicknesses. SiO2 layers both beneath and over the Ag NPs affected the resonance wavelengths of local surface plasmons (LSPs). By adjusting the SiO2 thickness beneath the Ag NPs from 5 nm to 20 nm, the dipole surface plasmon resonances shifted from 470 nm to 410 nm. Meanwhile, after sandwiching the Ag NPs by growing SiO2 before NPs fabrication and then overcoating the NPs with various SiO2 thicknesses from 5 nm to 20 nm, the dipole surface plasmon resonances changed from 450 nm to 490 nm. The SiO2 cladding dielectric layer can tune the Ag NP surface charge, leading to a change in the effective permittivity of the surrounding medium, and thus to a blueshift or redshift of the resonance wavelength. Also, the quadrupole plasmon resonances were suppressed by the SiO2 cladding layer because the dielectric SiO2 can suppress level splitting of surface plasmon resonances caused by the Ag NP coupling effect. |
收录类别 | SCI |
文献类型 | 期刊论文 |
条目标识符 | http://ir.ciomp.ac.cn/handle/181722/55440 |
专题 | 中科院长春光机所知识产出 |
推荐引用方式 GB/T 7714 | Liu, X. T.,D. B. Li,X. J. Sun,et al. Tunable Dipole Surface Plasmon Resonances of Silver Nanoparticles by Cladding Dielectric Layers[J]. Scientific Reports,2015,5:7. |
APA | Liu, X. T.,D. B. Li,X. J. Sun,Z. M. Li,H. Song,&H. Jiang and Y. R. Chen.(2015).Tunable Dipole Surface Plasmon Resonances of Silver Nanoparticles by Cladding Dielectric Layers.Scientific Reports,5,7. |
MLA | Liu, X. T.,et al."Tunable Dipole Surface Plasmon Resonances of Silver Nanoparticles by Cladding Dielectric Layers".Scientific Reports 5(2015):7. |
条目包含的文件 | 下载所有文件 | |||||
文件名称/大小 | 文献类型 | 版本类型 | 开放类型 | 使用许可 | ||
Tunable Dipole Surfa(1737KB) | 期刊论文 | 作者接受稿 | 开放获取 | CC BY-NC-SA | 浏览 下载 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论