We propose and verify experimentally a new concept for achieving strong nonlinear coupling between the electromagnetic and elastic properties in metamaterials. This coupling is provided through a novel degree of freedom in metamaterial design: internal rotation within structural elements. Our meta-atoms have high sensitivity to electromagnetic wave power, and the elastic and electromagnetic properties can be independently designed to optimise the response. We demonstrate a rich range of nonlinear phenomena including self-tuning and bistability, and provide a comprehensive experimental demonstration of the predicted effects.
@article{arxiv.1301.5960,
title = {Twists and turns for metamaterials},
author = {Mingkai Liu and Yue Sun and David A. Powell and Ilya V. Shadrivov and Mikhail Lapine and Ross C. McPhedran and Yuri S. Kivshar},
journal= {arXiv preprint arXiv:1301.5960},
year = {2013}
}
Comments
Supplemental material is contained in a separate file