![]() In addition, the design is not sensitive to the object that is being cloaked. Unlike other cloaking approaches 4, 5, 6, which are typically limited to subwavelength objects, the transformation method allows the design of cloaking devices that render a macroscopic object invisible. ![]() Artificially structured metamaterials have enabled unprecedented flexibility in manipulating electromagnetic waves and producing new functionalities, including the cloak of invisibility based on coordinate transformation 1, 2, 3.
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