A high-performance ultra-wideband metasurface absorber and thermal emitter for solar energy harvesting and thermal applications.

Solar radiation is the Earth's most plentiful renewable energy source. Metasurface-based nanostructures can store solar energy efficiently and exhibit consistent behavior when interacting with light waves. This study investigates an ultra-thin, ultra-wideband solar absorber and thermal emitter that operates in the 400-5000 nm spectrum.

A Novel Meander Line Metamaterial Absorber Operating at 24 GHz and 28 GHz for the 5G Applications.

Fifth generation (5G) communication systems deploy a massive MIMO technique to enhance gain and spatial multiplexing in arrays of 16 to 128 antennas. In these arrays, it is critical to isolate the adjacent antennas to prevent unwanted interaction between them. Fifth generation absorbers, in this regard, are the recent interest of many researchers nowadays.

Triangular metallic ring-shaped broadband polarization-insensitive and wide-angle metamaterial absorber for visible regime.

The inherent bandwidth limitations make it quite challenging to achieve the wideband response of metamaterial absorbers. In this paper, a metamaterial absorber based on triangular metallic rings has been proposed to attain wideband absorption (>90) in the wavelength span of 400-750 nm. The absorber is constituted of periodically placed unit cells, where each unit cell contains three concentric triangular chromium metal rings.

Polarization-insensitive dual-wideband fractal meta-absorber for terahertz applications.

Terahertz (THz) metamaterial absorbers have realized a prodigious reputation due to the limitation of natural absorbing materials in this range. Getting wideband absorption characteristics is challenging and arduous, especially in the THz band. Self-similar repeated fractal elements offer a promising solution to attain broadband absorption response due to their inherent multiple resonance characteristics.

Conductive metal-oxide-based tunable, wideband, and wide-angle metamaterial absorbers operating in the near-infrared and short-wavelength infrared regions.

This paper investigates the absorption features of the gallium-doped zinc oxide (GZO) nanowire-based metamaterial absorber. The absorption spectrum was analyzed in the near-infrared regime (NIR) and short-wavelength infrared regime (SWIR). The wideband absorption was observed in the NIR and SWIR.