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Illusion Optics: Disguising with Ordinary Dielectric Materials
Author(s) -
Liu Yichao,
Guo Shuwei,
He Sailing
Publication year - 2019
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201805106
Subject(s) - optics , transformation optics , illusion , scattering , object (grammar) , dielectric , isotropy , superlens , computer science , metamaterial , computer vision , materials science , artificial intelligence , physics , optoelectronics , neuroscience , biology
Illusion devices are usually designed using transformation optics. Here, a new method is proposed to achieve optical illusions without external devices by elaborately manipulating the scattering potential of an object. In contrast to the conventional transformation optics method, which completely replaces one object by the image of another object using complementary\restoring media and a superlens, the method described here is more of a cosmetic operation for an object, which modifies the scattering pattern of the object to mimic another object by exchanging their scattering potentials in two symmetrical areas in the wave vector domain. Only positive isotropic nonmagnetic materials are introduced in the present method, which is impossible using the conventional method because superlenses require negative‐index materials. Both numerical simulations and experimental demonstrations are used to verify the performance of the illusion devices of this method.