摘要
Integrated-resonant units(IRUs),associating various meta-atoms,resonant modes,and functionalities into one supercell,have been promising candidates for tailoring composite and multifunctional electromagnetic responses with additional degrees of freedom.Integrated-resonant metadevices can overcome many bottlenecks in conventional optical devices,such as broadband achromatism,efficiency enhancement,response selectivity,and continuous tunability,offering great potential for performant and versatile application scenarios.We focus on the recent progress of integrated-resonant metadevices.Starting from the design principle of IRUs,a variety of IRU-based characteristics and subsequent practical applications,including achromatic imaging,light-field sensing,polarization detection,orbital angular momentum generation,metaholography,nanoprinting,color routing,and nonlinear generation,are introduced.Existing challenges in this field and opinions on future research directions are also provided.
基金
the University Grants Committee/Research Grants Council of the Hong Kong Special Administrative Region,China(Project No.AoE/P-502/20,CRF Project No.C5031-22GF,and GRF Project Nos.15303521 and 11310522)
the Shenzhen Science and Technology Innovation Commission(Grant No.SGDX2019081623281169)
the Department of Science and Technology of Guangdong Province(Grant No.2020B1515120073)
the City University of Hong Kong(Project No.9380131).
