Monolithic phononic crystals with a surface acoustic band gap from surface phonon-polariton coupling

Yudistira, D, Boes, A, Rouhani, B, Pennec, Y, Yeo, L, Mitchell, A and Friend, J 2014, 'Monolithic phononic crystals with a surface acoustic band gap from surface phonon-polariton coupling', Physical Review Letters, vol. 113, no. 21, 215503, pp. 1-5.


Document type: Journal Article
Collection: Journal Articles

Title Monolithic phononic crystals with a surface acoustic band gap from surface phonon-polariton coupling
Author(s) Yudistira, D
Boes, A
Rouhani, B
Pennec, Y
Yeo, L
Mitchell, A
Friend, J
Year 2014
Journal name Physical Review Letters
Volume number 113
Issue number 21
Article Number 215503
Start page 1
End page 5
Total pages 5
Publisher American Physical Society
Abstract We theoretically and experimentally demonstrate the existence of complete surface acoustic wave band gaps in surface phonon-polariton phononic crystals, in a completely monolithic structure formed from a two-dimensional honeycomb array of hexagonal shape domain-inverted inclusions in single crystal piezoelectric Z-cut lithium niobate. The band gaps appear at a frequency of about twice the Bragg band gap at the center of the Brillouin zone, formed through phonon-polariton coupling. The structure is mechanically, electromagnetically, and topographically homogeneous, without any physical alteration of the surface, offering an ideal platform for many acoustic wave applications for photonics, phononics, and microfluidics.
Subject Acoustics and Acoustical Devices; Waves
Keyword(s) Acoustic surface wave devices
Acoustic waves
Acoustics
Crystal structure
Energy gap
Photons
Quantum theory
Single crystals
Spontaneous emission
DOI - identifier 10.1103/PhysRevLett.113.215503
Copyright notice © 2014 American Physical Society
ISSN 0031-9007
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