纳米尺度物体的介电函数和偶极作用分析  

Analysis of the dielectric function and dipole interact in nanoscale

作　　者：卢孟春[1] 郑勇林[1,2] 

机构地区：[1]长江师范学院凝聚态物理研究所,重庆408100 [2]成都大学电子信息工程学院,四川成都610106

出　　处：《低温物理学报》2016年第3期50-53,共4页Low Temperature Physical Letters

基　　金：重庆市教委科学技术研究项目(批准号:KJ061305;KJ081307)资助的课题

摘　　要：对于纳米级尺度的量子点或纳米线,虽然局域场的偶极和与块体材料系统相比而言是不相同的,但它们介电函数具有相同的Clausius-Mossotti关系.偶极和的不同值是由内部和外部电场之间不同关系的补偿所致.这暗示该关系(等式)可以适用于其它某种形状的(真实)物体.各向异性材料有不同局域场,这也暗示纳米尺度物体也许与各向异性的块体材料有相同的介电常数.It has the same Clausius-Mossotti relationship, thought the local electric dipole is not the same as the bulk material system, to nanoscale quantum dots or nanowires. The values of the material dipole sum are different by the compensation of the different relations between the internal and the external electric field, which implies that the relationship （equation） can be applied to other shapes real object. Though anisotropic materials have different local field, it is also suggested that nano scale objects may have the same permittivity as the anisotropic bulk materials.

关 键 词：纳米材料 电介质函数 偶极相互作用 

分 类 号：TB383.1[一般工业技术—材料科学与工程]