A PDMS photonic crystal slab for THz sensing

Electromagnetic properties of a photonic crystal slab in the shape of a two dimensional periodic lattice of polydimethylsiloxane (PDMS) rods with square symmetry is investigated through the use of THz time domain spectroscopy. The fit of the transmission through a full wave simulation give insights on the guided mechanism responsible for the onset of a resonance at about f
₀
= 1.57THz. The device can be exploited for enhanced sensing experiments of different organic/biological substances as supported by full wave simulations.