Broadband microwave absorption utilizing water-based metamaterial structures

Planar metamaterial-based beam-scanning broadband microwave antenna

Broadband terahertz metamaterial absorber based on sectional asymmetric structures

We suggest and demonstrate the concept and design of sectional asymmetric structures which can manipulate the metamaterial absorber's working bandwidth with maintaining the other inherent advantages. As an example, a broadband terahertz perfect absorber is designed to confirm its effectiveness. The absorber's each cell integrates four sectional asymmetric rings, and the entire structure compose...

Broadband near-infrared metamaterial absorbers utilizing highly lossy metals

Radiation absorbers have increasingly been attracting attention as crucial components for controllable thermal emission, energy harvesting, modulators, etc. However, it is still challenging to realize thin absorbers which can operate over a wide spectrum range. Here, we propose and experimentally demonstrate thin, broadband, polarization-insensitive and omnidirectional absorbers working in the ...

Near-perfect broadband absorption from hyperbolic metamaterial nanoparticles.

Broadband absorbers are essential components of many light detection, energy harvesting, and camouflage schemes. Current designs are either bulky or use planar films that cause problems in cracking and delamination during flexing or heating. In addition, transferring planar materials to flexible, thin, or low-cost substrates poses a significant challenge. On the other hand, particle-based mater...

Broadband effective magnetic response of inorganic dielectric resonator-based metamaterial for microwave applications

A single-sized dielectric cylinder-based metama-terial is fabricated from TiO2 nanoparticles, using a bottom-up approach. The sub-elements constituting the metalayer are embedded in a nonmagnetic transparent host matrix in the microwave regime and arranged in a square lattice. We demonstrate numerically and experimentally a broad-band magnetic activity. The key feature to achieve this per-forma...