Cover Picture Free Access Heliconical Cholesterics Endows Spatial Phase Modulator with an Electrically Customizable Working Band (Advanced Optical Materials 19/2022) Inside Front Cover Free Access Ultrasensitive Refractive Index Sensing Based on the Quasi-Bound States in the Continuum of All-Dielectric Metasurfaces (Advanced Optical Materials 19/2022) Back Cover Free Access Luminescence from Self-Trapped Excitons and Energy Transfers in Vacancy-Ordered Hexagonal Halide Perovskite Cs2HfF6 Doped with Rare Earths for Radiation Detection (Advanced Optical Materials 19/2022) Masthead Free Access Masthead: (Advanced Optical Materials 19/2022) Reviews Open Access Soft-Matter-Based Hybrid and Active Metamaterials Research Articles Full Access Nano-Optical Engineering of Anisotropic Phonon Resonances in a Hyperbolic α-MoO3 Metamaterial Open Access Thermal Runaway of Silicon-Based Laser Sails Full Access Short-Wave Infrared Chip-Spectrometer by Using Laser Direct-Writing Grayscale Lithography Full Access Generation and Control of Coherent Terahertz Phonons in Silicon Metasurfaces Full Access Chiral Perovskite Nanoplatelets Exhibiting Circularly Polarized Luminescence through Ligand Optimization Full Access Strong Linearly Polarized Emission from Monolayer WS2 Coupled with Plasmonic Nanocavity Array Open Access Quantization of Mode Shifts in Nanocavities Integrated with Atomically Thin Sheets Full Access Natural <3 nm Interbedded Gaps to Trap Target Molecules and Provide an Enhanced Raman Spectroscopy Method Full Access Field-Induced Structural Transitions in Liquid Crystal Microemulsions Open Access Scaling Laws for Perovskite Nanolasers With Photonic and Hybrid Plasmonic Modes Full Access Vertically Stacked vdW Double Heterojunction Photodiode with Ultrawide Bandgap Gallium Oxide Electron Reservoir Full Access Infrared Localized Surface Plasmon with Curved Electron Trajectory Open Access High-Harmonic Generation Enhancement with Graphene Heterostructures Full Access Robust Deposition of Sub-Millimeter WSe2 Drive Ultrasensitive Gate-Tunable 2D Material Photodetectors Full Access Tunable Luminescence of Sb3+ Doped 0D Cs4PbCl6 Nanocrystals from Three Distinct Emission Centers Full Access High Performance Shortwave Infrared Organic Photodetectors Adopting Thiadiazole Quinoxaline-Based Copolymers Full Access Room-Temperature Multi-Beam, Multi-Wavelength Bound States in the Continuum Laser Full Access Bioinspired Microplate Arrays for Magnetically Tuned Dynamic Color Full Access Novel and High-Sensitive Primary and Self-Referencing Thermometers Based on the Excitation Spectra of Lanthanide Ions Full Access Nonlinear Coherent Light–Matter Interaction in 2D MoSe2 Nanoflakes for All-Optical Switching and Logic Applications Full Access Ultrasensitive Refractive Index Sensing Based on the Quasi-Bound States in the Continuum of All-Dielectric Metasurfaces Full Access Epitaxial Growth of Vertically Aligned Antimony Selenide Nanorod Arrays for Heterostructure Based Self-Powered Photodetector Full Access Triangular Micro-Grating via Femtosecond Laser Direct Writing toward High-Performance Polarization-Sensitive Perovskite Photodetectors Full Access On the Origin of Photoluminescence Enhancement in Biicosahedral AgxAu25−x Nanoclusters (x = 0–13) and Their Application to Triplet–Triplet Annihilation Photon Upconversion Full Access Ultra-Wide Vis–NIR Mg2Al4Si5O18:Eu2+,Cr3+ Phosphor Containing Unusual NIR Luminescence Induced by Cr3+ Occupying Tetrahedral Coordination for Hyperspectral Imaging Full Access Standard White CP-OLEDs Performance Achieved by Intramolecular Chirality Transfer Mechanism through Polymer Chain Full Access Y-Shaped Pyrene-Based Aggregation-Induced Emission Blue Emitters for High-Performance OLED Devices Full Access Dual-Quasi Bound States in the Continuum Enabled Plasmonic Metasurfaces Full Access Organic Hollow Microstructures with Room Temperature Phosphorescence Full Access Quasi-1D ZrS3 as an Anisotropic Nano-Reflector for Manipulating Light–Matter Interactions Full Access Size-Dependent Photon Avalanching in Tm3+ Doped LiYF4 Nano, Micro, and Bulk Crystals Full Access Enhanced Emission from Defect Levels in Multilayer MoS2 Full Access Heterovalent Doping Enabled Efficient and Stable Extrinsic Self-Trapped Exciton Emission in Zero-Dimensional Cesium Zinc Halides Full Access Electro-Optic Effect of ZnO Microcavity and Active Dynamic Lasing Mode Modulation Full Access Heliconical Cholesterics Endows Spatial Phase Modulator with an Electrically Customizable Working Band Full Access Energy-Controllable Exciton-Polariton Bose–Einstein Condensation in Perovskite Microstrip Cavities Full Access Compelling Evidence for the ε-Phase InSe Crystal by Oblique Incident Second Harmonic Generation Full Access A New Biphotochromic Fluorescent Switch Based on Dithienylethene and Triphenylethylene: Synthesis, Crystal Structure, and Optical Waveguide Open Access Luminescence from Self-Trapped Excitons and Energy Transfers in 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