Academy of Opto-Electronics

Endogenous Functional Group Engineering Enables High‐Efficiency Hard Carbon Anodes for Sodium‐ion Batteries

ABSTRACT Hard carbon is a leading anode for sodium‐ion batteries, but its widespread use is still prevented from low initial Coulombic efficiency (ICE) and unstable electrode‐electrolyte interfaces. In this work, we show that engineering endogenous functional groups can directly...

Joint Amplitude‐Phase Coding Spatiotemporal Metasurface for Integrated Sensing and Camouflage

ABSTRACT Spatiotemporal modulated metasurfaces (STMMs) hold great promise for integrating electromagnetic (EM) sensing and radar camouflage to enhance battlefield survivability, yet existing STMM‐based methods remain constrained by limited array scalability, inadequate jamming ef...

Multidimensional Information‐Encoding Metasurface for Key‐Concealed Physical‐Layer Secure Communications

ABSTRACT Metasurface‐based secure communication has been extensively investigated, offering a new avenue for direct wireless physical‐layer encryption. However, most existing schemes are still restricted to single‐dimensional electromagnetic encryption and rely on key pre‐distrib...

Multi‐Channel Holography Enabled by Interlayer‐Correlated Liquid Crystal Elements for Nested Optical Encryption

ABSTRACT Liquid crystal (LC) planar devices have emerged as an attractive ultra‐thin platform for optical encryption. However, most existing LC‐based holographic encryption schemes rely on conventional multiplexing strategies with limited design freedom and weak interlayer collab...

Pixel‐Level Reconfigurable Pancharatnam–Berry Phase Induced by Inter‐Layer Coupling of Isotropic Metasurfaces

ABSTRACT The growing demand for dynamic electromagnetic wave control has accelerated the development of programmable metasurfaces. However, conventional approaches that rely on active components such as pin diodes, varactor diodes, and liquid crystals often suffer from limited mo...