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Nanomaterials 2017, 7(5), 116; doi:10.3390/nano7050116

Meta-Chirality: Fundamentals, Construction and Applications

State Key Laboratory of Optical Technologies on Nano-Fabrication and Micro-Engineering, Institute of Optics and Electronics, Chinese Academy of Sciences, P. O. Box 350, Chengdu 610209, China
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Academic Editor: Ashraf Ghanem
Received: 18 April 2017 / Revised: 9 May 2017 / Accepted: 10 May 2017 / Published: 17 May 2017
(This article belongs to the Special Issue Frontiers in Chiral Nanomaterials)
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Abstract

Chiral metamaterials represent a special type of artificial structures that cannot be superposed to their mirror images. Due to the lack of mirror symmetry, cross-coupling between electric and magnetic fields exist in chiral mediums and present unique electromagnetic characters of circular dichroism and optical activity, which provide a new opportunity to tune polarization and realize negative refractive index. Chiral metamaterials have attracted great attentions in recent years and have given rise to a series of applications in polarization manipulation, imaging, chemical and biological detection, and nonlinear optics. Here we review the fundamental theory of chiral media and analyze the construction principles of some typical chiral metamaterials. Then, the progress in extrinsic chiral metamaterials, absorbing chiral metamaterials, and reconfigurable chiral metamaterials are summarized. In the last section, future trends in chiral metamaterials and application in nonlinear optics are introduced. View Full-Text
Keywords: chiral metamaterials; circular dichroism; optical activity; extrinsic chirality; reconfigurable chiral metamaterials; circular dichroism; optical activity; extrinsic chirality; reconfigurable
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Ma, X.; Pu, M.; Li, X.; Guo, Y.; Gao, P.; Luo, X. Meta-Chirality: Fundamentals, Construction and Applications. Nanomaterials 2017, 7, 116.

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