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Experimental Verification of Isotropic Radiation from a Coherent Dipole Source via Electric-Field-Driven LC Resonator Metamaterials

Abstract : It has long been conjectured that isotropic radiation by a simple coherent source is impossible due to changes in polarization. Though hypothetical, the isotropic source is usually taken as the reference for determining a radiator's gain and directivity. Here, we demonstrate both theoretically and experimentally that an isotropic radiator can be made of a simple and finite source surrounded by electric-field-driven LC resonator metamaterials designed by space manipulation. As a proof-of-concept demonstration, we show the first isotropic source with omnidirectional radiation from a dipole source (applicable to all distributed sources), which can open up several possibilities in axion electrodynamics, optical illusion, novel transformation-optic devices, wireless communication, and antenna engineering. Owing to the electric-field-driven LC resonator realization scheme, this principle can be readily applied to higher frequency regimes where magnetism is usually not present.
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https://hal-univ-paris10.archives-ouvertes.fr/hal-01422971
Contributor : Shah Nawaz Burokur <>
Submitted on : Tuesday, December 27, 2016 - 9:40:11 PM
Last modification on : Wednesday, September 16, 2020 - 5:00:15 PM

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Paul-Henri Tichit, Shah Nawaz Burokur, Cheng-Wei Qiu, Andre Lustrac. Experimental Verification of Isotropic Radiation from a Coherent Dipole Source via Electric-Field-Driven LC Resonator Metamaterials. Physical Review Letters, American Physical Society, 2013, 111 (13), ⟨10.1103/PhysRevLett.111.133901⟩. ⟨hal-01422971⟩

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