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Effects of dielectric screening on the optical properties of metallic nanoshells

被引：106
作者：
Prodan, E
Nordlander, P
Halas, NJ
机构：
[1] Rice Univ, Dept Phys & Astron, Houston, TX 77251 USA
[2] Rice Univ, Dept Elect & Comp Engn, Houston, TX 77251 USA
[3] Rice Univ, Dept Chem, Houston, TX 77251 USA
来源：
CHEMICAL PHYSICS LETTERS | 2003年 / 368卷 / 1-2期
关键词：
D O I：
10.1016/S0009-2614(02)01828-6
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The time dependent density functional method for the calculation of optical properties of metallic nanoshells is extended to include the combined influence of a dielectric core and a dielectric embedding medium. The coupling between the polarization charges at the inner and outer surfaces of the shell is found to strongly influence the position of the plasmon resonances. The method is applied to gold nanoshells with gold sulfide cores in water for two different diameters, and the energies of the calculated plasmon resonances are found to be in good agreement with experimental measurements. (C) 2002 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：94 / 101
页数：8
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