We present a series of invisibility concentrators with simplified material parameters beyond trans- formation optics. One of them can achieve the perfect invisible effect at frequencies of Fabry-Perot resonances, whil...We present a series of invisibility concentrators with simplified material parameters beyond trans- formation optics. One of them can achieve the perfect invisible effect at frequencies of Fabry-Perot resonances, while others have very small scattering. The required materials are feasible in practice. Analytical calculations and numerical simulations confirm the functionalities of these devices.展开更多
基金This work was supported by the Fun- damental Research Funds for the Central Universities （grant No. 20720170015） and the National Science Foundation of China for Excellent Young Scientists （grant No. 61322504）. M. Z. and L. X. contributed equally to this work.
文摘We present a series of invisibility concentrators with simplified material parameters beyond trans- formation optics. One of them can achieve the perfect invisible effect at frequencies of Fabry-Perot resonances, while others have very small scattering. The required materials are feasible in practice. Analytical calculations and numerical simulations confirm the functionalities of these devices.
