A PDMS photonic crystal slab for THz sensing

Electromagnetic properties of a photonic crystal slab in the shape of a two dimen-sional periodic lattice of polydimethylsiloxane (PDMS) rods with square symmetry is investi-gated through the use of THz time domain spectroscopy. The fit of the transmission through afull wave simulation give insights on the guided mechanism responsible for the onset of a reso-nance at aboutf0=1.57THz. The device can be exploited for enhanced sensing experiments ofdifferent organic/biological substances as supported by full wave simulations.