Dai Zhigao, Hu Guangwei, Ou Qingdong, Zhang Lei, Xia Fengnian, Garcia-Vidal Francisco J, Qiu Cheng-Wei, Bao Qiaoliang
Engineering Research Center of Nano-Geomaterials of Ministry of Education, Faculty of Materials Science and Chemistry, China University of Geosciences, 388 Lumo Road, Wuhan 430074, P.R. China.
Department of Materials Science and Engineering, ARC Centre of Excellence in Future Low-Energy Electronics Technologies (FLEET), Monash University, Wellington Road, Clayton, Victoria 3800, Australia.
Chem Rev. 2020 Jul 8;120(13):6197-6246. doi: 10.1021/acs.chemrev.9b00592. Epub 2020 Jun 4.
Recently, two rich and exciting research fields, layered two-dimensional (2D) materials and metamaterials, have started overlapping. Metamaterials are artificial, engineered materials with broad metaphotonic prospects such as negative refraction, perfect lensing, subwavelength imaging, and cloaking. The possibility of achieving metaphotonic properties using metamaterials based on layered 2D materials has been extensively exploited. Because they are highly tunable and adjustable with the ease of micro- and nanofabrication, 2D materials exhibit diverse optical properties such as natural negative refraction, natural anisotropic behavior, and even hyperbolic dispersion. A combination of 2D materials with conventional metamaterials promises a variety of prospective applications. In this review, we illustrate how the concept of metamaterials and their associated metaphotonic capabilities are naturally born in 2D materials. The multifunctionality of 2D materials may enable the manufacture of novel optical devices that work in a broad frequency range, from visible to terahertz, with particularly low loss, high speed, gated tunability, and miniaturized sizes. This new area of research links the fields of photonics, optoelectronics, and plasmonics with that of metamaterials and may provide insights to future innovations for 2D-material-inspired metaphotonic devices.
最近，两个丰富且令人兴奋的研究领域，即层状二维（2D）材料和超材料，开始相互重叠。超材料是具有广泛的超光子学前景的人工工程材料，如负折射、完美透镜、亚波长成像和隐身。利用基于层状二维材料的超材料实现超光子特性的可能性已得到广泛探索。由于二维材料具有高度的可调节性且易于进行微纳加工，它们展现出多种光学特性，如自然负折射、自然各向异性行为，甚至双曲线色散。二维材料与传统超材料的结合有望带来各种潜在应用。在这篇综述中，我们阐述了超材料的概念及其相关的超光子能力是如何在二维材料中自然产生的。二维材料的多功能性可能使制造出在从可见光到太赫兹的宽频率范围内工作的新型光学器件成为可能，这些器件具有特别低的损耗、高速、门控可调性和小型化尺寸。这个新的研究领域将光子学、光电子学和等离子体学领域与超材料领域联系起来，并可能为受二维材料启发的超光子器件的未来创新提供见解。
