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Bistability in mushroom-type metamaterials

Fernandes, D. E. ; Silveirinha, M. G.

Journal of Appl. Physics Vol. 122, Nº 014303, pp. 1 - 9, July, 2017.

ISSN (print): 0021-8979
ISSN (online): 0021-8979

Scimago Journal Ranking: 0,74 (in 2017)

Digital Object Identifier: 10.1063/1.4989816

Here, we study the electromagnetic response of asymmetric mushroom-type metamaterials loaded with nonlinear elements. It is shown that near a Fano resonance, these structures may have a strong tunable, bistable, and switchable response and enable giant nonlinear effects. By using an effective medium theory and full wave simulations, it is proven that the nonlinear elements may allow the reflection and transmission coefficients to follow hysteresis loops, and to switch the metamaterial between “go” and “no-go” states similar to an ideal electromagnetic