Department of Electrical Engineering and Center for Nanoscale Science, The Pennsylvania State University, University Park, Pennsylvania 16802, USA.
Nat Commun. 2016 Oct 27;7:13236. doi: 10.1038/ncomms13236.
Despite the exotic material properties that have been demonstrated to date, practical examples of versatile metamaterials remain exceedingly rare. The concept of metadevices has been proposed in the context of hybrid metamaterial composites: systems in which active materials are introduced to advance tunability, switchability and nonlinearity. In contrast to the successful hybridizations seen at lower frequencies, there has been limited exploration into plasmonic and photonic nanostructures due to the lack of available optical materials with non-trivial activity, together with difficulties in regulating responses to external forces in an integrated manner. Here, by presenting a series of proof-of-concept studies on electrically triggered functionalities, we demonstrate a vanadium dioxide integrated photonic metamaterial as a transformative platform for multifunctional control. The proposed hybrid metamaterial integrated with transition materials represents a major step forward by providing a universal approach to creating self-sufficient and highly versatile nanophotonic systems.
尽管迄今为止已经展示了许多奇异的材料特性,但多功能超材料的实际应用仍然极为罕见。元器件的概念是在混合超材料复合材料的背景下提出的:在这些系统中引入了活性材料以提高可调谐性、可切换性和非线性。与在较低频率下看到的成功混合形成鲜明对比的是,由于缺乏具有非平凡活性的可用光学材料,以及难以以集成的方式调节对外力的响应,因此对等离子体和光子纳米结构的探索受到了限制。在这里,通过展示一系列关于电触发功能的概念验证研究,我们展示了一种氧化钒集成光子超材料,作为多功能控制的变革性平台。与过渡材料集成的拟议混合超材料代表了向前迈出的重要一步,为创建自给自足且高度通用的纳米光子系统提供了一种通用方法。