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Title: Directional invisibility by genetic optimization
Authors: Bor, E.
Babayiğit, Ceren
Kurt, Hamza
Staliunas, Kestutis
Turduev, Mirbek
Keywords: Optical Cloaking
Issue Date: 1-Dec-2018
Publisher: Optical Society of America
Source: Bor, E., Babayigit, C., Kurt, H., Staliunas, K., & Turduev, M. (2018). Directional invisibility by genetic optimization. Optics letters, 43(23), 5781-5784.
Abstract: In this Letter, the design of a directional optical cloaking by a genetic algorithm is proposed and realized experimentally. A three-dimensional finite-difference time-domain method is combined with the genetic optimization approach to generate the cloaking structure to directionally cloak a cylindrical object made of a perfect electrical conductor by suppressing the undesired scattered fields around the object. The optimization algorithm designs the permittivity distribution of the dielectric polylactide material to achieve an optical cloaking effect. Experimental verifications of the designed cloaking structure are performed at microwave frequencies, where the proposed structure is fabricated by 3D printing. The imperfect conformal mapping from a large-scale permittivity distribution and the compensation of the remaining scattering by a small-scale permittivity distribution are the basic physical mechanisms of the proposed optical cloaking.
Appears in Collections:Elektrik ve Elektronik Mühendisliği Bölümü / Department of Electrical & Electronics Engineering
PubMed İndeksli Yayınlar Koleksiyonu / PubMed Indexed Publications Collection
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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