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Terahertz Vortex Phase Plate from a Printed Electronic Device

We demonstrate the terahertz (THz) transmission properties of printed electronic devices. An ultrathin vortex phase plate (VPP) has been fabricated by inkjet printing technology and our experimental results confirmed its expected resonance at 220 GHz. We show that printable electronics are a promising technique for fabricating ultrathin VPP in the THz frequency range.