银纳米球壳二聚体的几何结构与电磁场增强共振波长的关系

The Relationship Between the Geometry of an Isolated Ag Nanoshell Dimer and the Electromagnetic Field Enhancement

基于Mie理论的T-矩阵方法,研究了银纳米球壳二聚体的几何结构对其自身电磁场增强的影响,并结合偶极子场耦合理论进一步讨论了二聚体阵列的光学性质.计算结果表明,通过调控银纳米球壳二聚体的几何结构可以强烈地影响到二聚体和二聚体阵列的光学性质.同时发现二聚体对电磁场增强的共振波长可以随着二聚体几何结构的改变而改变.

Using the T-matrix method based on Mie theory,the relationship between the geometry of an isolated Ag nanoshell dimer and the electromagnetic field enhancement by itself is studied.Combining the dipole-dipole coupling approximation,the influence of the geometry of an isolated nanoshell dimer on EM enhancement of nanoshell dimer array is studied also.The results show that the geometry of an isolated nanoshell dimer extensively influences on the optical properties of nanoshell dimer and nanoshell dimer array....