Metamaterials enable precise tailoring of light–matter interactions at the subwavelength
scale, permitting access to the full range of electromagnetic responses encoded in Maxwell's …

The diverse vision systems found in nature can provide interesting design inspiration for
imaging devices, ranging from optical subcomponents to digital cameras and visual …

It's critically important to construct arbitrary inorganic features with high resolution. As an
inorganic photoresist, hydrogen silsesquioxane (HSQ) has been patterned by irradiation …

Gradient metasurface provides a new way for controlling electromagnetic wave, and vortex
beam can be widely used to improve the performance of wireless communication. Here …

Wide field-of-view (FOV) optics are essential components in many optical systems, with
applications spanning imaging, display, sensing, and beam steering. Conventional …

In the past centuries, the scale of engineering optics has evolved toward two opposite
directions: one is represented by giant telescopes with apertures larger than tens of meters …

Direct laser writing (DLW) has been shown to render 3D polymeric optical components,
including lenses, beam expanders, and mirrors, with submicrometer precision. However …

A Luneburg lens with a gradient index distribution is an aberration-free and coma-free
spherical lens. It has wide applications ranging from invisibility cloaks, illusion optics, and …

As artificial 2D materials made of subwavelength inclusions, metasurfaces bear exotic
optical and electromagnetic properties not obtainable in naturally occurring materials. Based …

Acoustic Luneburg lens (ALL) is a spherically/circularly symmetric gradient refractive index
lens, whose index varies smoothly from the outer surface to the centre. The variation of the …