Wave propagation in a randomized cut-wire array

In this paper, the randomization and ground effects on the wave propagation in a cut-wire array have been investigated. It is found that randomizing the height of the wires affects the low-frequency cut-wire resonance phenomenon, while randomizing the spacing between wires influences the high-frequency passband/stopband behaviors. The introduction of a lossy ground changes the propagation considerably, as the wire resonance shifts up to above the plasmonic cut-off.