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      • Abstract: found
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      Dual-band Circular Polarizer Based on Simultaneous Anisotropy and Chirality in Planar Metamaterial

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          Abstract

          Metamaterial of dual-square array is proposed to design a dual-band circular polarizer. The novel design of asymmetric unit cell and layout of duplicate arrays significantly enhances the coupling between electric and magnetic fields. Simulation and measurement results show that the polarizer presents wide angle circular dichroism and circular birefringence. Moreover, the polarization conversion of the proposed metamaterial changes with frequency, incident angle, and polarization of incident waves. The fundamental mechanism behind is concluded to be the angle-dependent chirality and dispersion of our novel design.

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          Metamaterials and negative refractive index.

          D Smith, J. Pendry, M. Wiltshire (2004)
          Recently, artificially constructed metamaterials have become of considerable interest, because these materials can exhibit electromagnetic characteristics unlike those of any conventional materials. Artificial magnetism and negative refractive index are two specific types of behavior that have been demonstrated over the past few years, illustrating the new physics and new applications possible when we expand our view as to what constitutes a material. In this review, we describe recent advances in metamaterials research and discuss the potential that these materials may hold for realizing new and seemingly exotic electromagnetic phenomena.
          Article 0 comments Cited 856 times – based on 0 reviews     Review now
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            Gold helix photonic metamaterial as broadband circular polarizer.

            Justyna K Gansel, Michael A Thiel, Michael S Rill … (2009)
            We investigated propagation of light through a uniaxial photonic metamaterial composed of three-dimensional gold helices arranged on a two-dimensional square lattice. These nanostructures are fabricated via an approach based on direct laser writing into a positive-tone photoresist followed by electrochemical deposition of gold. For propagation of light along the helix axis, the structure blocks the circular polarization with the same handedness as the helices, whereas it transmits the other, for a frequency range exceeding one octave. The structure is scalable to other frequency ranges and can be used as a compact broadband circular polarizer.
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              Metamaterials: optical activity without chirality.

              Angela Plum, X. Liu, V. Fedotov … (2009)
              We report that the classical phenomenon of optical activity, which is traditionally associated with chirality (helicity) of organic molecules, proteins, and inorganic structures, can be observed in artificial planar media which exhibit neither 3D nor 2D chirality. We observe the effect in the microwave and optical parts of the spectrum at oblique incidence to regular arrays of nonchiral subwavelength metamolecules in the form of strong circular dichroism and birefringence indistinguishable from those of chiral three-dimensional media.
              Article 0 comments Cited 145 times – based on 0 reviews     Review now
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                Author and article information

                Contributors
                Yizhe Zhao: zhaoyz91@163.com
                Anyong Qing: qinganyong@gmail.com
                Journal
                Journal ID (nlm-ta): Sci Rep
                Journal ID (iso-abbrev): Sci Rep
                Title: Scientific Reports
                Publisher: Nature Publishing Group UK (London )
                ISSN (Electronic): 2045-2322
                Publication date (Electronic): 29 January 2018
                Publication date PMC-release: 29 January 2018
                Publication date Collection: 2018
                Volume: 8
                Electronic Location Identifier: 1729
                Affiliations
                [1 ]ISNI 0000 0004 0369 4060, GRID grid.54549.39, School of Physical Electronics, , University of Electronic Science and Technology of China, ; Chengdu, 610054 China
                [2 ]ISNI 0000000119573309, GRID grid.9227.e, The Institute of Optics and Electronics, , The Chinese Academy of Sciences, ; Chengdu, 610209 China
                Article
                Publisher ID: 17976
                DOI: 10.1038/s41598-017-17976-w
                PMC ID: 5789011
                PubMed ID: 29379021
                SO-VID: 440c4d3b-b27b-4333-a10d-ad1223d8a9e3
                Copyright © © The Author(s) 2018
                License:

                Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

                History
                Date received : 14 September 2017
                Date accepted : 4 December 2017
                Categories
                Subject: Article
                Custom metadata
                issue-copyright-statement © The Author(s) 2018

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