金属/化合物/石墨烯复合纳米阵列结构的LSPR特性  

LSPR Properties of Metal-Compound-Graphene Composite Nanoarray Structure

作　　者：李伟[1] 刘超[1] 吕靖薇 刘昭廷[1] 汪发美 Li Wei;Liu Chao;Lu Jingwei;Liu Zhaoting;Wang Famei(College of Electronics Science,Northeast Petroleum University,Daqing,Heitongjiang 163318,China)

机构地区：[1]东北石油大学电子科学学院,黑龙江大庆163318

出　　处：《激光与光电子学进展》2018年第8期437-441,共5页Laser & Optoelectronics Progress

基　　金：国家自然科学基金(51474069;51374072;51101027);国家科技重大专项(2011ZX05020-006);黑龙江省新世纪优秀人才支持计划(1253-NCET-002)

摘　　要：对金属/化合物/石墨烯复合纳米阵列的消光特性及电场分布进行了仿真研究。研究结果表明,随着石墨烯原子层数的增加,偶极子共振峰强度逐渐增大;改变二层板的结构和石墨烯的厚度,偶极子共振峰峰位由660nm蓝移到510nm;外界介质折射率对LSPR的共振峰有着显著的影响;当折射率固定时,石墨烯柱与金属Ag板的底角及石墨烯柱与SiO2板的顶角处的电场增强现象较为强烈。The extinction property and electric field distribution of the metal-compound-graphene composite nanoarray are simulated.The research results show that the dipole resonance peak intensity gradually increases with the increase of the atomic layer number of graphene.The dipole resonance peak position is blue-shifted from 680 nm to 500 nm when the two laminate structures and the graphene thickness are changed.The refractive index of external media has a significant influence on the resonance peak of LSPR.When the refractive index is fixed,the electric fields at the base angle between graphene column and metal Ag board and at the apex angel between graphene column and SiO_2 board are strongly enhanced.

关 键 词：表面光学 消光特性 表面等离子体共振 电场分布 

分 类 号：O433.4[机械工程—光学工程]