标题:Spoof Surface Plasmonic Graphene for Controlling the Transports and Emissions of Electromagnetic Waves
作者:Qin P.; Li E.; Yang Y.; Ma H.; Zheng B.; Gao F.; Wang Z.; Shen L.;等 更多
作者机构:[Qin, P] Key Laboratory of Advanced Micro/Nano Electronic Devices and Smart Systems and Applications, College of Information Science and Electronic En 更多
来源:IEEE Transactions on Microwave Theory and Techniques
出版年:2018
DOI:10.1109/TMTT.2018.2874253
关键词:Artificial graphene; Dipole antennas; Dispersion; Graphene; Metals; metasurface; Microwave theory and techniques; Plasmons; spoof surface plasmon polaritons (SSPPs).; Surface waves
摘要:Inspired by the recent development of graphene, we propose and experimentally demonstrate a novel metasurface, namely, spoof surface plasmonic graphene, for controlling the transports and emissions of electromagnetic waves. Similar to graphene, at the corners of the Brillouin zone for our designed metasurface, two bands of spoof surface plasmon polaritons (SSPPs) linearly touch together, forming Dirac-like cones. In the experiments, we directly observed the Dirac cones in the momentum space by using near-field scanning. When the frequency is changed from the lower cone to the Dirac point and to the upper cone, the corresponding SSPPs' transport on the metasurface shows negative group velocities, pseudodiffusion characteristics, and positive group velocities, respectively. The emission of the SSPPs to the air shows a transition of the wavefront from a concave to flat and finally to convex. The metasurface proposed here may find many potential applications in directional antennas, waveguide, diffusion-like transport, focusing and imaging devices, and integrated spoof plasmonic circuits. IEEE
收录类别:SCOPUS
资源类型:期刊论文
原文链接:https://www.scopus.com/inward/record.uri?eid=2-s2.0-85055681823&doi=10.1109%2fTMTT.2018.2874253&partnerID=40&md5=a1e3de9dd171a812131741a74ab6b7b6
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