2013/01/25 by Mingkai Liu, Liu, Mingkai, Yue Sun +11
Materials Science · Engineering · #Metamaterials and Metasurfaces Applications #Acoustic Wave Phenomena Research #Advanced Materials and Mechanics
paper · pdf · doi:10.48550/arxiv.1301.5960
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.