Spatial dependence of the local field enhancement in dielectric shell coated silver nanospheres
文献类型：期刊论文
| 作者 | Zhu, Jian |
| 刊名 | APPLIED SURFACE SCIENCE
 |
| 出版日期 | 2007-08-31 |
| 卷号 | 253页码:8729-8733 |
| 关键词 | silver nanosphere local field enhancement dielectric shell quasi-static theory |
| ISSN号 | 0169-4332 |
| DOI | 10.1016/j.apsusc.2007.04.050 |
| 英文摘要 | The dependence of the local field factor around dielectric shell coated silver nanospheres was investigated by theoretical calculation as a function of the spatial distance. The local field factors in the dielectric shell are sensitive to the distance from particle center and shell thickness. When the shell dielectric constant is greater than that of surrounding medium, the maximum of local field factor at inner surface of the shell red shift and increases nonlinearly with increasing the shell thickness. On the contrary, when shell dielectric constant is less than that of surrounding medium. increasing the shell thickness leads the maximum of local field factor at inner surface blue shifts and decreases nonlinearly. However, with increasing the shell thickness, the maximum of local field factor at exterior surface of the shell always decrease nonlinearly. Furthermore, with increasing shell thickness, all these variations get gentle approach to a constant value when the shell thickness is two times of the core radius. When the core and shell diameter have fixed values, the local field factors in dielectric shell decrease with increasing the distance from particle center, but the peak position is not sensitive to the distance. (c) 2007 Elsevier B.V. All rights reserved. |
| WOS关键词 | OPTICAL-PROPERTIES ; GOLD NANORODS ; METAL NANOPARTICLES ; RAMAN-SCATTERING ; CORE ; NANOSHELLS ; SURFACES ; SILICA |
| WOS研究方向 | Chemistry ; Materials Science ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000249248100029 |
| 出版者 | ELSEVIER SCIENCE BV |
| 源URL | [http://119.78.100.186/handle/113462/27899]  |
| 专题 | 中国科学院近代物理研究所 |
| 通讯作者 | Zhu, Jian |
| 作者单位 | Xian Jiaotong Univ, Sch Sci, Inst Modern Phys, Xian 710049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhu, Jian. Spatial dependence of the local field enhancement in dielectric shell coated silver nanospheres[J]. APPLIED SURFACE SCIENCE,2007,253:8729-8733. |
| APA | Zhu, Jian.(2007).Spatial dependence of the local field enhancement in dielectric shell coated silver nanospheres.APPLIED SURFACE SCIENCE,253,8729-8733. |
| MLA | Zhu, Jian."Spatial dependence of the local field enhancement in dielectric shell coated silver nanospheres".APPLIED SURFACE SCIENCE 253(2007):8729-8733. |
入库方式： OAI收割
来源：近代物理研究所
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