Abstract:
:High-performance locally resonant metamaterials represent the next frontier in materials technology due to their extraordinary properties obtained through materials design, enabling a variety of potential applications. The most exceptional feature of locally resonant metamaterials is the subwavelength size of their unit cells, which allows to overcome the limits in wave focusing, imaging and sound/vibration isolation. To respond to the fast evolution of these artificial materials and the increasing need for advanced and exceptional properties, the emergence of a new mechanism for wave mitigation and control consisting in a nonlinear interaction between propagating and evanescent waves has recently been theoretically demonstrated. Here, we present the experimental proof of this phenomenon: the appearance of a subharmonic transmission attenuation zone due to energy exchange induced by autoparametric resonance. These results pave the path to a new generation of nonlinear locally resonant metamaterials.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Zega V,Silva PB,Geers MGD,Kouznetsova VGdoi
10.1038/s41598-020-68894-3subject
Has Abstractpub_date
2020-07-21 00:00:00pages
12041issue
1issn
2045-2322pii
10.1038/s41598-020-68894-3journal_volume
10pub_type
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