An electronically tunable metasurface that rotates polarization

Researchers at the University of Michigan and City University of New York have recently proposed and experimentally validated a transparent, electronically tunable metasurface. This metasurface, presented in a paper published in Physical Review X, can rotate the polarization of an arbitrarily polarized incident wave without changing its axial ratio.

Metasurfaces are artificial sheet materials textured at a sub-wavelength scale in order to produce tailored electromagnetic responses. In recent years, these materials have enabled unprecedented control over electromagnetic waves, opening up interesting possibilities in numerous areas, including wireless communications,imagingand energy harvesting.