Signal processing is of critical importance for various science and technology fields. Analog
optical processing can provide an effective solution to perform large-scale and real-time …

The fruitful progress toward light manipulation in reflective (R) or transmissive (T) geometry
(half‐space) has facilitated strong aspiration towards full‐space wave control. Although R–T …

Metasurface retroreflectors, which scatter the incident electromagnetic wave back to
incoming direction, have received significant attention due to their compelling advantages of …

Advanced kirigami/origami techniques have enabled the flexible transformation of planar
patterns into exquisite three‐dimensional (3D) structures and provided a new paradigm to …

Gap-surface plasmon (GSP) metasurfaces have attracted progressively increasing attention
due to their planar configurations, ease of fabrication, and unprecedented capabilities in …

Many real-world applications, including adaptive radar scanning and smart stealth, require
reconfigurable multifunctional devices to simultaneously manipulate multiple degrees of …

Metamaterials/metasurfaces, which have subwavelength resonating unit cells (ie, meta‐
atoms), can enable unprecedented control over the flow of light. Despite their significant …

Longwave infrared (LWIR) optics are essential for several technologies, such as thermal
imaging and wireless communication, but their development is hindered by their bulk and …

By redirecting the incident wave energy back toward the source or sensor, retroreflectors
mitigate signal losses, render a higher signal-to-noise transmission with improved sensing …

Electromagnetic resonances in meta‐atoms have empowered optical interfaces with
unprecedented abilities in wavefront manipulation. Despite the versatile applications …