Multilayered metal core-shell nanostructures for inducing a large and tunable local optical field

被引：77

作者：

Xu, HX

机构：

[1] Lund Univ, Div Solid State Phys, SE-22100 Lund, Sweden

[2] Chinese Acad Sci, Inst Phys, Beijing 100080, Peoples R China

来源：

PHYSICAL REVIEW B | 2005年 / 72卷 / 07期

关键词：

D O I：

10.1103/PhysRevB.72.073405

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We examine the near-field optical properties of multilayered metal core-shell sphere nanostructures by extending the Mie theory, and demonstrate that the local-field enhancement can be increased by adding new metal shells. A local intensity enhancement of more than 10(5) times can be obtained in the cavity between the Ag core and the innermost Ag shell for proper configurations of multilayered Ag core-shell spheres. The high enhancement can be tuned from the red to the infrared region by varying the configurations of the core-shell nanostructures.

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页数：4

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