Finite-thickness effects in plasmonic films with periodic cylindrical anisotropy [Invited]
Finite-thickness effects in plasmonic films with periodic cylindrical anisotropy [Invited]
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DOI：
10.1364/ome.9.000285
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发表时间：
2018-10
影响因子：
2.8
通讯作者：
I. Bondarev
中科院分区：
文献类型：
--
作者：
I. Bondarev
从理论上分析了等离子体频率和相关的介电响应函数的等离子体激元膜形成的周期性排列，无限薄，相同的金属圆柱体的厚度效应。系统的等离子体频率具有单向的平方根动量和准线性动量空间色散的厚膜和厚膜，分别。这种空间色散和与之相关的单向介电响应非局域性不仅可以通过薄膜材料的组成来调节，而且可以通过改变薄膜厚度、圆柱体长度、圆柱体半径与薄膜厚度之比以及通过适当地选择薄膜的衬底和覆盖物来调节。将该理论应用于有限厚度周期性排列的碳纳米管薄膜。
Finite-thickness effects are analyzed theoretically for the plasma frequency and associated dielectric response function of plasmonic films formed by periodically aligned, infinitely thin, identical metallic cylinders. The plasma frequency of the system is shown to have the unidirectional square-root-of-momentum and quasilinear momentum spatial dispersion for the thick and ultrathin films, respectively. This spatial dispersion and the unidirectional dielectric response nonlocality associated with it can be adjusted not only by the film material composition but also by varying the film thickness, the cylinder length, the cylinder-radius-to-film-thickness ratio, and by choosing the substrates and superstrates of the film appropriately. Application of the theory developed to the finite-thickness periodically aligned carbon nanotube films is discussed.