Abstract:Metasurfaces, ultrathin two-dimensional arrays of artificially engineered meta-atoms, can impart spatially varying changes towards the incident electromagnetic wave and provide versatile functionalities once unprecedented in sub-wavelength thick natural materials. The wavefront manipulation by metasurfaces usually arises from the strong resonant behaviors of varied meta-atoms in subwavelength lattice, which also brings some drawbacks like the unexpected dispersion due to separate resonances of the meta-atoms a… Show more
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