Issue |
EPL
Volume 103, Number 1, July 2013
|
|
---|---|---|
Article Number | 18002 | |
Number of page(s) | 6 | |
Section | Interdisciplinary Physics and Related Areas of Science and Technology | |
DOI | https://doi.org/10.1209/0295-5075/103/18002 | |
Published online | 23 July 2013 |
Chiral structure based on bilayered displaced U pair
ESAT-TELEMIC, Katholieke Universiteit Leuven - B-3001 Leuven, Belgium, EU
Received: 7 May 2013
Accepted: 26 June 2013
A type of bilayered chiral structure is introduced. Whereas common bilayered chiral structures are based on rotation, our design is based on the displacement between two U topologies on different layers. This displacement breaks the symmetry of the pattern and generates the chirality. Prototypes are fabricated in the microwave frequency band. Simulated and measured results agree well. Both optical activity and circular dichroism are observed for circularly polarized waves. The amplitude and phase differences for the transmission coefficients of the circularly polarized waves can reach more than 12 dB and 40° at about 13.4 GHz, respectively. Since the chirality of the bilayered structure can be easily controlled by moving the position of one of the two layers, this topology can be used in the designing of tunable chiral metamaterials.
PACS: 81.05.Xj – Metamaterials for chiral, bianisotropic and other complex media / 78.67.Pt – Multilayers; superlattices; photonic structures; metamaterials / 33.55.+b – Optical activity and dichroism
© EPLA, 2013
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.