Diffractive photonic devices manipulate light via local and nonlocal optical modes. Local devices, such as metasurfaces, can shape a wavefront at multiple selected wavelengths, but inevitably modify light across the spectrum; nonlocal devices, such as grating filters, offer great frequency selectivity but limited spatial control. Here, we introduce a rational design paradigm using quasi-bound states in the continuum to realize multifunctional nonlocal devices: metasurfaces that produce narrowband spatially tailored wavefronts at multiple selected wavelengths and yet are otherwise transparent.
Multiresonant Membrane Metasurfaces for Multifunctional Fingerprint Recognition and Real-time Biochemical Tracking
Central South University（中南大学）；University of Southampton（南安普顿大学）；Yunnan Normal University（云南师范大学）；Tianjin University（天津大学）；Australian National University（澳大利亚国立大学）
Multifunctional Imaging with an Inverse-Designed Nonlocal Metasurface
ARC Centre of Excellence for Transformative Meta-Optical Systems（ARC变革性超光学系统卓越中心）；School of Physics, University of Melbourne（墨尔本大学物理学院）；Department of Electrical and Electronic Engineering, University of Melbourne（墨尔本大学电气与电子工程系）；The Sir Peter MacCallum Dept of Oncology, University of Melbourne（墨尔本大学彼得·麦克卡伦爵士肿瘤学系）；Department of Pathology, Peter MacCallum Cancer Centre（彼得·麦克卡伦癌症中心病理学部）；Department of Biochemistry and Pharmacology, The University of Melbourne（墨尔本大学生物化学与药理学系）
Zeroth-order-free holographic reconstruction with a nanoimprinted nonlocal metasurface
Science & Technology Research Laboratories, Japan Broadcasting Corporation NHK（日本广播协会NHK科学技术研究所）；Department of Physics and Electronics, Graduate School of Engineering, Osaka Metropolitan University（大阪公立大学工学研究科物理电子学专业）
Electro-optical modulation of light polarization in a nonlocal lithium niobate metasurface
Politecnico di Milano（米兰理工大学）；EPFL, Insitute of Mechanical Engineering, Laboratory of Nanoscience for Energy Technologies（洛桑联邦理工学院机械工程学院纳米能源技术实验室）；ETH Zürich, Department of Physics, Institute for Quantum Electronics（苏黎世联邦理工学院物理系量子电子研究所）；Università di Brescia（布雷西亚大学）
Wavelength and Polarization Multiplexed Nonlocal Metasurface for Quantitative Phase Microscopy
ARC Centre of Excellence for Transformative Meta-Optical Systems, School of Physics, The University of Melbourne（墨尔本大学变革性超光学系统卓越中心物理学院）；School of Physics, The University of Melbourne（墨尔本大学物理学院）；Department of Biochemistry and Pharmacology, The University of Melbourne（墨尔本大学生化与药理学系）；Functional Materials and Microsystems Research Group and the Mico Nano Research Facility, RMIT University（皇家墨尔本理工大学功能材料与微系统研究组及微电子纳米研究设施）；ARC Centre of Excellence for Transformative Meta-Optical Systems, RMIT University（皇家墨尔本理工大学变革性超光学系统卓越中心）
Perfect all-angle asymmetric transmission via normal susceptibilities: exact spatial derivative by local meta-atoms and nonlocal metasurfaces
Andrew and Erna Viterbi Faculty of Electrical and Computer Engineering, Technion—Israel Institute of Technology（安德鲁和埃尔纳·维特比电气与计算机工程学院，以色列理工学院）；Photonics Initiative of the Advanced Science Research Center, City University of New York（纽约市立大学高级科学研究中心光子学计划）
Dual-polarization control of broadband nonreciprocal thermal radiation by combining local and nonlocal metasurfaces
The University of Hong Kong（香港大学）；State Key Laboratory of Optical Quantum Materials, The University of Hong Kong（香港大学光学量子材料国家重点实验室）；Institute of Engineering Thermophysics, MOE Key Laboratory for Power Machinery and Engineering, School of Mechanical Engineering, Shanghai Jiao Tong University（上海交通大学机械工程学院动力机械工程教育部重点实验室工程热物理研究所）；Department of Electrical and Computer Engineering, National University of Singapore（新加坡国立大学电气与计算机工程系）；Key Laboratory of Terahertz Solid State Technology, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences（中国科学院上海微系统与信息技术研究所太赫兹固态技术重点实验室）；National Engineering Research Center of Electromagnetic Radiation Control Materials, University of Electronic Science and Technology of China（电子科技大学电磁辐射控制材料国家工程研究中心）
Quantum Phase Gradient Imaging Using a Nonlocal Metasurface System
ARC Centre of Excellence for Transformative Meta-Optical Systems (TMOS), Department of Electronic Materials Engineering, Research School of Physics, The Australian National University（澳大利亚国立大学）；Institute of Quantum Precision Measurement, State Key Laboratory of Radio Frequency Heterogeneous Integration, College of Physics and Optoelectronic Engineering, Shenzhen University（深圳大学）；Institute of Solid State Physics, Abbe Center of Photonics, Friedrich-Schiller-University Jena（耶拿弗里德里希·席勒大学）；TMOS, Department of Electrical and Electronic Engineering, School of Physics, University of Melbourne（墨尔本大学）；Institute of Applied Physics, Abbe Center of Photonics, Friedrich Schiller University Jena（耶拿弗里德里希·席勒大学）；Fraunhofer Institute for Applied Optics and Precision Engineering IOF（弗劳恩霍夫应用光学和精密工程研究所）
