Keywords: metasurface; meta-device; meta-hologram; programmable optical meta-hologram 1 Introduction The metaverse is a digitally created virtual environment that can interact with and outperform the real world. Media, such as photos and videos, are represented as holograms in the metaverse. The virt...
Lead halide perovskites, as the most attractive semiconductor materials in the past decade in the photovoltaic (PV) community27,28, are rapidly emerging in the field of nanophotonics with various demonstrated functional devices, including on-chip vortex microlasers29, meta-holograms30, optical data sto...
Active metasurfaces, which consist of planar arrays of subwavelength light scatters or antennas (“meta-atoms”), enable dynamic and versatile control over electromagnetic field states and optical responses1,2. Compared to conventional bulk optics, they feature ultra-compact, lightweight, and energy-...
The binary meta-radiator in Fig.2is composed of two embedded PIN diodes that connect the feeding pin to the radiated patch, and works in both "ON" and "OFF" modes in which surface current can only pass through one of the diodes and radiate, consequently. As the current passing through t...
The development of artificial intelligence is typically focused on computer algorithms and integrated circuits. Recently, all-optical diffractive deep neural networks have been created that are based on passive structures and can perform complicated func
The programmable metasurface concept overcomes the static limitations of previous dielectric metasurfaces, paving the way for "universal" metasurfaces and highly efficient, ultracompact active optical elements like tunable lenses, dynamic holograms, and spatial light modulators. Tunable allヾielectric Huygens...
Millimeter-wave (mmWave) and orbital angular momentum (OAM) multiplexing are two key technologies for modern wireless communications, where significant efforts have been devoted to combining these two technologies for extremely high channel capacities. R
By designing coding sequences of '0' and '1' elements in coding metama- terials, we can manipulate EM waves to obtain different functionali- ties. This concept can be extended to 2-bit or more. In fact, the opposite-phase methods have been widely used in the antenna and optical ...
“meta-atoms”) in subwavelength assemblies in so-called metasurfaces allows for realizing ultrathin optical devices with exciting functionalities like beam steering4, lensing5,6, and holography7,8. While these functionalities are originally fixed upon fabrication, they can be rendered active by ...