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Acoustic phonon modes and phononic bandgaps in GaN/AlN nanowire superlattices

Seiji Mizuno

Author Affiliations

Department of Applied Physics, Hokkaido University, Kita 13 Nishi 8, Kita-ku, Sapporo, 060-8628, Japan

Nanoscale Research Letters 2012, 7:479  doi:10.1186/1556-276X-7-479

Published: 23 August 2012


We study numerically the phonon dispersion relations and corresponding displacement fields for a circular cross-section nanowire superlattices consisting of anisotropic GaN and AlN. We determine a set of parameters which gives complete phononic bandgaps. The results suggest the potential for manipulating phonons in the micro/nano electromechanical systems.

Nanowire superlattice; Acoustic phonon; Phononic crystal; Phononic bandgap