Phononic crystal (PnC) structures based on an array of metallic pillars on a piezzoelectric substrate will be discussed as a means for achieving PnBG at high (e.g., GHz) frequencies. In addition to operation at higher frequencies, the advantage of metallic-pillar-based structures in providing design flexibility for functional PnC-based devices will be discussed. Experimental evidence for the existence of the PnBG in these structures and the use of their relatively wide bandgap for the implementation of practical PnC devices (especially waveguides and resonators) will be theoretically and experimentally demonstrated, and the prospects of these structures for practical applications (e.g., sensing and wireless communications) will be discussed.

Date Published: 13 May 2015
PDF: 1 pages
Proc. SPIE 9436, Smart Sensor Phenomena, Technology, Networks, and Systems Integration 2015, 94360R (13 May 2015); doi: 10.1117/12.2176207

Published in SPIE Proceedings Vol. 9436:
Smart Sensor Phenomena, Technology, Networks, and Systems Integration 2015
Kara J. Peters, Editor(s)