Particle plasmons: Why shape matters

被引：45
作者：
Barnes, William L. [1 ]
机构：
[1] Univ Exeter, Dept Phys & Astron, Stocker Rd, Exeter EX4 4QL, Devon, England
来源：
AMERICAN JOURNAL OF PHYSICS | 2016年 / 84卷 / 08期
关键词：
METAL NANOPARTICLES; OPTICAL-PROPERTIES; SURFACE-PLASMONS; ENERGY GAPS; FIELD; RESONANCES; SCATTERING; ORIGIN; MODES; ATOMS;
D O I：
10.1119/1.4948402
中图分类号：
G40 [教育学];
学科分类号：
040101 ; 120403 ;
摘要：
Simple analytic expressions for the polarizability of metallic nanoparticles are in wide use in the field of plasmonics, but their origins are not obvious. In this article, expressions for the polarizability of a particle are derived in the quasistatic limit in a manner that allows the physical origin of the terms to be clearly seen. The discussion is tutorial in nature, with particular attention given to the role of particle shape since this is a controlling factor in particle plasmon resonances. (C) 2016 American Association of Physics Teachers.
引用
收藏
页码：593 / 601
页数：9
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