![]() Generally speaking, passive metadevices have a fixed topological geometry. Metadevices (Metasurfaces) are the extension and development of MMs, consisting of single or ultrathin multilayer microstructures arranged in two dimensions, with the advantages of easy processing and integration. Due to their unusual physical characteristics, many exciting phenomena have emerged, such as the negative refractive index, light polarization control, invisibility cloak, holographic imaging, circular dichroism, etc. Metamaterials (MMs) are periodic or aperiodic artificial materials composed of subwavelength metal/dielectric microstructures. Electronic components integrated microstructures with high degrees of freedom have potential applications in intelligent wireless communication, electronic detection, advanced sensors, and smart stealth radomes. A prototype of the microstructure has been fabricated, and the experimental results agree well with the simulation. Electric field distribution, power loss, complex impedance functions, and equivalent circuit models are used to better analyze the physical mechanism of the design. Reasonable arrangements of coding sequences allow for reflected dual/multi-beam modulation. By controlling the two diodes on the top layer in opposite states, absorption bandwidth is significantly improved. Coding metadevices designed with diversified lumped element combinations are further studied in detail. Three functionalities of broadband high-efficiency transmission, broadband high-efficiency reflection, and perfect absorption are switched by the on-state and off-state PIN diodes. In this paper, we propose a reconfigurable metadevice with independent polarization control based on a 90° rotationally symmetric microstructure.
0 Comments
Leave a Reply. |