Honeycomb phononic crystals with self-similar hierarchy

Davood Mousanezhad, Sahab Babaee, Ranajay Ghosh, Elsadig Mahdi, Katia Bertoldi, and Ashkan Vaziri

Phys. Rev. B 92, 104304 – Published 29 September 2015

Abstract

We highlight the effect of structural hierarchy and deformation on band structure and wave-propagation behavior of two-dimensional phononic crystals. Our results show that the topological hierarchical architecture and instability-induced pattern transformations of the structure under compression can be effectively used to tune the band gaps and directionality of phononic crystals. The work provides insights into the role of structural organization and hierarchy in regulating the dynamic behavior of phononic crystals, and opportunities for developing tunable phononic devices.

Received 1 May 2015

DOI:https://doi.org/10.1103/PhysRevB.92.104304

Authors & Affiliations

Davood Mousanezhad¹, Sahab Babaee², Ranajay Ghosh¹, Elsadig Mahdi³, Katia Bertoldi², and Ashkan Vaziri^1,*

¹Department of Mechanical and Industrial Engineering, Northeastern University, Boston, Massachusetts 02115, USA
²Harvard John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts 02138, USA
³Mechanical and Industrial Engineering Department, Qatar University, Doha, Qatar

^*vaziri@coe.neu.edu

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Issue

Vol. 92, Iss. 10 — 1 September 2015

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Physical Review B

covering condensed matter and materials physics