Pneumatically tuned microfluidic meta-atom SRR

A fluidic split ring resonator (SRR) is proposed to achieve frequency tunability. An integrated microfluidic channel is employed in between the gaps of the fluidic SRR to harness pneumatic tuning by air injection/suction. An experimental investigation demonstrates that a frequency tuning of 3% can be achieved using air as the manipulating force to induce a small deflection in the SRR gap.