Omnidirectional Surface Plasmon Polaritons Concentration in 3D Metallic Structures
Omnidirectional Surface Plasmon Polaritons Concentration in 3D Metallic Structures
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DOI：
10.1007/s11468-019-00942-9
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发表时间：
2019-05
期刊：
影响因子：
3
通讯作者：
Lei Zheng;A. Evlyukhin;L. Overmeyer;C. Reinhardt
中科院分区：
文献类型：
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作者：
Lei Zheng;A. Evlyukhin;L. Overmeyer;C. Reinhardt
具有对称曲面的 3D 金属结构被提出用于表面等离子体激元 (SPP) 偏转和集中。双光子聚合（2PP）和溅射工艺用于制备所提出的结构。泄漏辐射显微镜 (LRM) 用于激发和观察 SPP。表征结果表明，当表面波在金属结构的凸起部分周围传播时，所提出的结构能够偏转 SPP 并部分集中 SPP 能量。当SPP向结构凸起部分的中心传播时，可以达到最大电磁能量集中。通过分析和实验研究了所提出的金属结构相对于不同轮廓的能量集中性能。讨论了等离激元器件在能量收集元件、全向光吸收器和弯曲器中的应用。
3D metallic structures with symmetrically curved surfaces are proposed for surface plasmon polaritons (SPPs) deflection and concentration. Two-photon polymerization (2PP) and a sputtering process are applied for the preparation of the proposed structures. Leakage radiation microscopy (LRM) is used for the excitation and observation of SPPs. The characterization results reveal that the proposed structures are able to deflect SPPs and partly concentrate SPPs energy when the surface waves propagate around the raised part of the metallic structure. The maximum electromagnetic energy concentration can be reached when SPPs propagate towards the center of the raised part of the structure. An investigation on the energy concentration performance of the proposed metallic structures with respect to different profiles is analytically and experimentally carried out. Applications of plasmonic devices for energy harvesting elements, omnidirectional light absorbers, and benders are discussed.