Skip navigation
Skip navigation

Optical activity and coupling in twisted dimer meta-atoms

Liu, Mingkai; Powell, David A.; Shadrivov, Ilya V.; Kivshar, Yuri S.


We analyse the optical activity in twisted dimers, the meta-atoms of a chiralmetamaterial, by introducing a simple yet accurate model for the coupling between them. The near-field interaction coefficients are derived from a Lagrangian model and include the effects of retardation, whereas the far-field radiation is based on a multipole expansion. We show that the optimum twist angle varies with frequency, and near resonance is substantially lower than 45 degrees, which is the lowest symmetry...[Show more]

CollectionsANU Research Publications
Date published: 2012-03-15
Type: Journal article
Source: Applied Physics Letters
DOI: 10.1063/1.3694269


File Description SizeFormat Image
01_Liu_Optical_activity_and_coupling_2012.pdfPublished Version1.29 MBAdobe PDFThumbnail

Items in Open Research are protected by copyright, with all rights reserved, unless otherwise indicated.

Updated:  20 July 2017/ Responsible Officer:  University Librarian/ Page Contact:  Library Systems & Web Coordinator