Mimicing surface phonon polaritons in microwave band based on ionic-type phononic crystal.

We propose an approach to scale the frequency of surface phonon polariton to megahertz-gigahertz region via an artificial microstructure, ionic-type phononic crystal (ITPC). The period of ITPC can be intentionally controlled on all relevant length scales, which allows the creation of surface phonon polariton with almost arbitrary dispersion in frequency and space. A field of surface phonon polariton optics in microwave band is expected with similar optical properties to those of ionic crystals in infrared. [ABSTRACT FROM AUTHOR]