Fig. 2: Design of flexible reconfigurable metasurface.

a Exploded view of RM and the structure of meta-atom. b Photograph and simulation result of strain distribution showing the serpentine traces in the ground plane when it bent with a bending radius of 50 mm. c Comparison of the bending stiffness of the RMs with the ground planes based on bare copper and serpentine layout. d Photograph of fabricated RM. Measured (e) reflection magnitude and (f) phase of meta-atoms with varying varactor capacitance and angle of incidence. The color lines in the two panels correspond to the same capacitance of varactor and angle of incidence. g Measured dependence of phase variation on frequency with varying angles of incidence.