Directive emission from defect-free dodecagonal photonic quasicrystals

We report on directive, low-sidelobe emission from embedded sources in finite-size aperiodically-ordered "photonic-quasicrystal'' slabs. Our investigation deals with a two-dimensional structure made of dielectric rods arranged according to a 12-fold symmetric aperiodic tiling, and involves a body of parametric studies based on rigorous full-wave simulations, as well as their physically-incisive interpretation in terms of leaky-wave radiation.