Abstract
Designing adjustable intrinsic metamaterials with double negative electromagnetic properties has been a challenging subject. The flexible carbon foam matrix intrinsic metamaterials whose double negative properties can be regulated by deformation are successfully synthesized. The metamaterial properties convert from positive to negative and continuous transition from weak to strong can also be realized through deformation regulation, which confirmed the characteristics of intelligent regulation and controllable response in the carbon matrix intrinsic metamaterials. It is revealed by SEM analysis that a large number of micropores and closed loops constituted by three-dimensional porous network skeletons of carbon foam become denser under deformation regulation, which is advantageous for the appearance of negative permittivity and negative permeability. This research provides essential inspirations for the exploration of intelligent metamaterials such as controllable polarization converters and hybrid integrated circuit switches.
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