Flatland Optics with Hyperbolic Metasurfaces
Flatland Optics with Hyperbolic Metasurfaces
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DOI：
10.1021/acsphotonics.6b00645
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发表时间：
2016-12-01
期刊：
影响因子：
7
通讯作者：
Alu, Andrea
中科院分区：
文献类型：
--
作者：
Gomez-Diaz, J. S.;Alu, Andrea
在这个角度来看，我们讨论了平面双曲元表面（MTS）的物理和潜在的应用，重点放在他们的面内和近场响应。在回顾了支撑表面等离子体激元的色散关系和性质之后，我们讨论了单轴MTS可以实现的不同拓扑结构。特别注意的是专门的双曲制度，表现出不寻常的功能，如理想的无限波限制和当地的状态密度。在这种情况下，我们澄清了不同的物理机制，限制这些理想的概念，使用在自然界中发现的材料的实际实施，我们描述了几种方法来实现双曲线MTS，从使用新的二维材料，如黑磷的人工纳米结构的复合材料制成的石墨烯或银。一些令人兴奋的现象和应用，然后提出和讨论，包括负折射和表面内的SPP路由，平面超透镜，戏剧性的增强和剪裁的局域态密度，和宽带超普朗克热发射。最后，我们概述了我们对单轴MTS未来的愿景及其对纳米光子学，片上网络，传感，成像和通信系统发展的潜在影响。
In this Perspective, we discuss the physics and potential applications of planar hyperbolic metasurfaces (MTSs), with emphasis on their in-plane and near-field responses. After revisiting the governing dispersion relation and properties of the supported surface plasmon polaritons (SPPs), we discuss the different topologies that uniaxial MTSs can implement. Particular attention is devoted to the hyperbolic regime, which exhibits unusual features, such as an ideally infinite wave confinement and local density of states. In this context, we clarify the different physical mechanisms that limit the practical implementation of these ideal concepts using materials found in nature, and we describe several approaches to realize hyperbolic MTSs, ranging from the use of novel 2D materials such as black phosphorus to artificial nanostructured composites made of graphene or silver. Some exciting phenomena and applications are then presented and discussed, including negative refraction and the routing of SPPs within the surface, planar hyperlensing, dramatic enhancement and tailoring of the local density of states, and broadband super-Planckian thermal emission. We conclude by outlining our vision for the future of uniaxial MTSs and their potential impact for the development of nanophotonics, on-chip networks, sensing, imaging, and communication systems.