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Ultrathin electromagnetic cloaks to reduce backward scattering at microwave wavelengths are in demand, for their promise in e. g. radar detection, as well as concealment. Concealing wavelength-scale objects with sufficient bandwidth at tiny cloak thicknesses is still challenging, though. This study experimentally demonstrates a composite strategy to design an ultrathin microwave conformal metasurface cloak for efficiently reducing backscattering from a wavelength-scale cylinder, with improved bandwidth. These results will have an impact on many applications, such as electromagnetic isolation and camouflage.
Luo et al. (Wed,) studied this question.