Effects of dielectric screening on the optical properties of metallic nanoshells
Effects of dielectric screening on the optical properties of metallic nanoshells
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DOI：
10.1016/s0009-2614(02)01828-6
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发表时间：
2003-01-14
影响因子：
2.8
通讯作者：
Halas, NJ
中科院分区：
文献类型：
--
作者：
Prodan, E;Nordlander, P;Halas, NJ
将计算金属纳米壳光学性质的含时密度泛函方法扩展到包括介电核和介电包埋介质的综合影响。在壳的内表面和外表面的极化电荷之间的耦合被发现强烈影响的等离子体共振的位置。该方法适用于金纳米壳与硫化金核在水中两种不同的直径，和计算的等离子体共振的能量被发现是在良好的协议与实验测量。(C)2002 Elsevier Science B.V.保留所有权利。
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.