Metasurfaces consisting of subwavelength elements exhibit unparalleled flexibility in light
manipulation in terms of phase, amplitude, and/or polarization at ultrathin dimensions …

Metalenses, being composed of subwavelength phase-control nanostructures, can achieve
peculiar manipulations of incident rays. Dispersion is one of the key optical characteristics to …

Optical meta-surface element is a kind of two-dimensional ultra-thin device based on the
regular arrangement of single-layer or multi-layer sub-wavelength nanostructure array. It can …

With current trends to progressively miniaturize optical systems, it is now essential to look for
alternative methods to control light at extremely small dimensions. Metalenses are …

Quasi-bound states in the continuum provide an effective and observable way to improve
metasurface performance, usually with an ultra-high-quality factor. Dielectric metasurfaces …

Optical edge-enhanced imaging is an effective method for boundary extraction, and it is also
a cutting-edge technology for object detection in image processing. With the rapid …

We propose two kinds of high-efficiency free-space wave splitters in the mid-IR band using
reverse design. The wavelength divider based on the abnormal reflection principle realizes …

Metasurfaces, being composed of subwavelength nanostructures, can achieve peculiar
optical manipulations of phase, amplitude, etc. A large field of view (FOV) is always one of …

The functionality of most of the metasurfaces that have been investigated so far, especially in
illuminations with arbitrarily linearly polarized incident light, are restricted to x-or y-polarized …

Once the metalenses are fabricated, the functions of most metalenses are invariable. The
tunability and reconfigurability are useful and cost-saving for metalenses in realistic …