Abstract
The study of advanced artificial electromagnetic materials, known as metamaterials, provides a link from material science to theoretical and applied electrodynamics, as well as to electrical engineering. Being initially intended mainly to achieve negative refraction1,2, the concept of metamaterials quickly covered a much broader range of applications, from microwaves to optics and even acoustics3,4. In particular, nonlinear metamaterials established a new research direction 5,6,7,8,9,10,11,12 giving rise to fruitful ideas for tunable and active artificial materials13,14,15. Here we introduce the concept of magnetoelastic metamaterials, where a new type of nonlinear response emerges from mutual interaction. This is achieved by providing a mechanical degree of freedom so that the electromagnetic interaction in the metamaterial lattice is coupled to elastic interaction. This enables the electromagnetically induced forces to change the metamaterial structure, dynamically tuning its effective properties. This concept leads to a new generation of metamaterials, and can be compared to such fundamental concepts of modern physics as optomechanics16 of photonic structures or magnetoelasticity in magnetic materials.
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Acknowledgements
This work was supported by the Australian Research Council. The authors thank M. Gorkunov and A. Sukhorukov for useful discussions.
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Theoretical analysis was carried out by M.L. and experiments were carried out by I.V.S. and D.A.P. All authors analysed and discussed the results. The manuscript was written by M.L., Y.S.K., D.A.P. and I.V.S. and the figures were prepared by I.V.S., D.A.P. and M.L.
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Lapine, M., Shadrivov, I., Powell, D. et al. Magnetoelastic metamaterials. Nature Mater 11, 30–33 (2012). https://doi.org/10.1038/nmat3168
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DOI: https://doi.org/10.1038/nmat3168
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