DocumentCode
2972800
Title
Full band gaps for surface acoustic waves in piezoelectric phononic crystals
Author
Laude, Vincent ; Wilm, Mikael ; Benchabane, Sarah ; Khelif, Abdelkrim
Author_Institution
Inst. FEMTO-ST, CNRS, Besancon, France
Volume
2
fYear
2004
fDate
23-27 Aug. 2004
Firstpage
1046
Abstract
Surface acoustic waves in phononic crystals consisting of holes in a Y-cut lithium niobate substrate are identified numerically using a plane-wave-expansion method. The phononic crystal has a square lattice with circular void inclusions with a filling fraction of 63%. It is found that a large full-band gap with a fractional bandwidth of 34% exists for surface acoustic waves of any polarization and incidence. coincidentally with the full band gap for bulk waves propagating in the plane of the surface.
Keywords
bulk acoustic wave devices; lithium compounds; piezoelectric materials; surface acoustic wave devices; Y-cut lithium niobate substrate; bulk wave propagation; circular void inclusions; full band gaps; piezoelectric phononic crystals; plane-wave-expansion method; square lattice; surface acoustic waves; Acoustic propagation; Acoustic waves; Bandwidth; Crystals; Filling; Lattices; Lithium niobate; Photonic band gap; Polarization; Surface acoustic waves;
fLanguage
English
Publisher
ieee
Conference_Titel
Ultrasonics Symposium, 2004 IEEE
ISSN
1051-0117
Print_ISBN
0-7803-8412-1
Type
conf
DOI
10.1109/ULTSYM.2004.1417952
Filename
1417952
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