Switchable metamaterial reflector/absorber for different polarized electromagnetic waves

By Bo O. Zhu, Yijun Feng, J. Zhao, Ci Huang, Tian Jiang. 2010

240 citations recorded by the source corpus.

We demonstrate a controllable electromagnetic wave reflector/absorber for different polarizations with metamaterial involving electromagnetic resonant structures coupled with diodes. Through biasing at different voltages to turn ON and OFF the diodes, we are able to switch the structure between nearly total reflection and total absorption of a particularly polarized incident wave. By arranging orthogonally orientated resonant cells, the metamaterial can react to different polarized waves by selectively biasing the corresponding diodes. Both numerical simulations and microwave measurements have verified the performance.

Subfields: Aerospace Engineering, Electronic, Optical and Magnetic Materials

View Paper: https://www.semanticscholar.org/paper/9d524f48663f03441d9af81b4a7c59b5ef6e9228

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In Aerospace Engineering

In Electronic, Optical and Magnetic Materials

Citations in the corpus

Metamaterial-based perfect absorbers (2014, methodology): “[37] By manipulating the polarization in the MM, the embedded diode has led to switchable absorption in the GHz region.[38] Control of the distance between coupling components allows us to obtain the tunable dual-band perfect absorbers based on extraordinary optical transmission and Fabry–Perot cavi”
Electromagnetic metasurfaces: physics and applications (2019, unknown): “tionality of the device from a reflector to a perfect absorber [96].”
Metasurfaces and their applications (2018, background): “Figure 5A [86] shows a metasurface that includes diodes within each unit cell that is tunable from total reflection to absorption, taking the advantage of turning the diode’s channel ON and OFF with different bias voltages.”
Intelligent Metasurfaces with Continuously Tunable Local Surface Impedance for Multiple Reconfigurable Functions (2018, background): “The existing local tuning strategies have mainly concentrated on a binary phase-state scenario, or a continuous reactance tuning scenario, e.g., by introducing diodes or varactors [17, 23, 28–33], respectively.”