Plasmonics of regular shape particles,a simple group theory approach  

作　　者：Sarra Mitiche Sylvie Marguet Fabrice Charra Ludovic Douillard 

机构地区：[1]Université Paris-Saclay,CEA,CNRS,SPEC,F-91191,Gif sur Yvette,France [2]Université Paris-Saclay,CEA,CNRS,NIMBE,F-91191,Gif sur Yvette,France

出　　处：《Nano Research》2020年第6期1597-1603,共7页纳米研究（英文版）

基　　金：The CEA authors acknowledge financial support by the French National Agency(ANR)in the frame of its program in Nanosciences and Nanotechnologies(PEEM Plasmon Project ANR-08-NANO-034,ANR P2N 2013-Samiré);NanosciencesÎle-de-France(PEEM Plasmonics project);the“Triangle de la Physique”(PEPS Project 2012-035T);the doctoral school“Ecole Doctorale Ondes et Matière(EDOM)”.

摘　　要：A simple hand calculation method based on group theory is proposed to predict the near field maps of finite metallic nanoparticles(MNP)of canonical geometries:prism,cube,hexagon,disk,sphere,etc.corresponding to low order localized surface plasmon resonance excitations.In this article,we report the principles of the group theory approach and demonstrate,through several examples,the general character of the group theory method which can be applied to describe the plasmonic response of particles of finite or infinite symmetry point groups.Experimental validation is achieved by collection of high-resolution subwavelength near-field maps by photoemission electron microscopy(PEEM)on a representative set of Au colloidal particles exhibiting either finite(hexagon)or infinite(disk,sphere)symmetry point groups.

关 键 词：surface plasmon resonance group theory HEXAGON DISK SPHERE photoemission electron microscopy(PEEM) 

分 类 号：O53[理学—等离子体物理]