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|Title:||Experimental verification of isotropic radiation from a coherent dipole source via electric-field-driven LC resonator metamaterials|
De Lustrac, A.
|Source:||Tichit, P.-H., Burokur, S.N., Qiu, C.-W., De Lustrac, A. (2013-09-24). Experimental verification of isotropic radiation from a coherent dipole source via electric-field-driven LC resonator metamaterials. Physical Review Letters 111 (13) : -. ScholarBank@NUS Repository. https://doi.org/10.1103/PhysRevLett.111.133901|
|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. © 2013 American Physical Society.|
|Source Title:||Physical Review Letters|
|Appears in Collections:||Staff Publications|
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