Graphene-empowered dynamic metasurfaces and metadevices

• 作者: Chao Zeng Hua Lu Dong Mao Yueqing Du He Hua Wei Zhao Jianlin Zhao
• 来源期刊: 光电进展（英文版）
• 年，卷（期）: 2022,（4）
• 所属期刊栏目: Review
• 页码范围: 1-47
• 页数: 47页
• 语种: 英文
• DOI: 10.29026/oea.2022.200098

摘要

Metasurfaces, with extremely exotic capabilities to manipulate electromagnetic (EM) waves, have derived a plethora of advanced metadevices with intriguing functionalities. Tremendous endeavors have been mainly devoted to the static metasurfaces and metadevices, where the functionalities cannot be actively tuned in situ post-fabrication. Due to the in-trinsic advantage of active tunability by external stimulus, graphene has been successively demonstrated as a favorable candidate to empower metasurfaces with remarkably dynamic tunability, and their recent advances are propelling the EM wave manipulations to a new height: from static to dynamic. Here, we review the recent progress on dynamic metasur-faces and metadevices enabled by graphene with the focus on electrically-controlled dynamic manipulation of the EM waves covering the mid-infrared, terahertz, and microwave regimes. The fundamentals of graphene, including basic ma-terial properties and plasmons, are first discussed. Then, graphene-empowered dynamic metasurfaces and met-adevices are divided into two categories, i.e., metasurfaces with building blocks of structured graphene and hybrid metasurfaces integrated with graphene, and their recent advances in dynamic spectrum manipulation, wavefront shap-ing, polarization control, and frequency conversion in near/far fields and global/local ways are elaborated. In the end, we summarize the progress, outline the remaining challenges, and prospect the potential future developments.