We demonstrate a concept of a nonlinear metamaterial that provides power dependent
absorption of incident surface waves. The metasurface includes nonlinear circuits which
transform it from a low loss to high loss state when illuminated with high power waves. The
proposed surface allows low power signals to propagate but strongly absorbs high power
signals. It can potentially be used on enclosures for electric devices to protest against
damage. We experimentally verify that the nonlinear metasurface has two distinct states …