◈ Special Issue Information：

This Special Issue aims to invite researchers to contribute original research papers, dealing with all aspects of topological classical waves. Topics of interest include, but are not limited to:

• EM/acoustic metamaterials with topological frequency band
• Vortex beams
  
• Bound state in continuum (BIC)
  
• Topological EM / acoustics devices
  
• The interaction between band topology and non-hermicity / nonlinearity

◈ Special Issue Editors：

Dr. Fei Gao College of Information Science and Electronic Engineering Zhejiang University

◈ Manuscipts Submission:

Manuscripts should be submitted online. This special issue title should be selected during the online submission process. All papers will be peer-reviewed. Accepted papers will be published online continuously (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers).

◈ Published Papers in This Special Issue:

2020-11-26 Designer Surface Plasmons Enable Terahertz Cherenkov Radiation (Invited) By Jie Zhang, Xiaofeng Hu, Hongsheng Chen, and Fei Gao Progress In Electromagnetics Research, Vol. 169, 25-32, 2020 doi:10.2528/PIER20102708
2020-12-02 One-Way Topological States Along Vague Boundaries in Synthetic Frequency Dimensions Including Group Velocity Dispersion (Invited) By Qingrou Shan, Danying Yu, Guangzhen Li, Luqi Yuan, and Xianfeng Chen Progress In Electromagnetics Research, Vol. 169, 33-43, 2020 doi:10.2528/PIER20083101

More papers to be added here ...