球形金属簇等离子体线宽的研究方法进展  

PROGRESS IN THE RESEARCH METHODS OF LINEWIDTH IN SPHERICAL METALLIC CLUSTERS

作　　者：朱俊[1] 

机构地区：[1]温州大学物理与电子信息工程学院,浙江温州325035

出　　处：《陕西科技大学学报（自然科学版）》2012年第1期116-121,共6页Journal of Shaanxi University of Science & Technology

摘　　要：由于量子尺寸效应,金属纳米粒子表现出一些特殊的光学性质,而金属纳米粒子在生物、化学和新型材料等方面的广阔应用前景,使我们对其光学性质的理解和研究变得至关重要.对于中间大小(半径R:0.5～2.5nm)的金属纳米粒子,Landau衰减是其主要的能量耗散方式.作者系统总结了球形金属纳米粒子表面等离子体共振线宽的研究方法,介绍了粒子大小、温度和电介质环境对线宽的影响,并指出了近年来金属纳米粒子光学性质方面的研究热点.Metallic nanoparticles have some particular optical properties because of quantum size effect. It is very important and crucial to understand and research the optical properties of nanoparticles because of their various applications in biology, chemistry and new materi- als, etc. For the intermediate-size nanoparticles whose radius R in the range 0.5-2.5 nm, Landau damping is the dominant channel of energy decay. We formulate the research meth- ods of the linewidth of surface plasmon resonance for spherical nanoparticles, and introduce the effects of size, temperature and dielectric environment on the linewidth. Moreover, we point out the hot spots of ootical oroDerties of nanonnrtioles in the recent years.

关 键 词：金属纳米粒子 表面等离子体 朗道衰减 光吸收截面 线宽 

分 类 号：O482.3[理学—固体物理]