Acoustic Waves in Thin Plates of Lithium Niobate

2000 ◽  
Vol 46 (1) ◽  
pp. 33 ◽  
Author(s):  
I. A. Borodina
Keyword(s):  
Lithium Niobate ◽  
Acoustic Waves ◽  
Thin Plates

Investigation of acoustic waves in thin plates of lithium niobate and lithium tantalate

2001 ◽  
Vol 48 (1) ◽  
pp. 322-328 ◽  
Author(s):  
I.E. Kuznetsova ◽  
B.D. Zaitsev ◽  
S.G. Joshi ◽  
I.A. Borodina
Keyword(s):  
Lithium Niobate ◽  
Acoustic Waves ◽  
Lithium Tantalate ◽  
Thin Plates

Lithium niobate phononic crystal for surface acoustic waves

2006 ◽  
Author(s):  
S. Benchabane ◽  
A. Khelif ◽  
J. Y. Rauch ◽  
L. Robert ◽  
V. Laude
Keyword(s):  
Lithium Niobate ◽  
Acoustic Waves ◽  
Phononic Crystal ◽  
Surface Acoustic Waves

Surface Acoustic Wave Band Gaps and Phononic Structures on Thin Solid Plates

2005 ◽  
Author(s):  
Xinya Zhang ◽  
Ted Jackson ◽  
Emmanuel Lafound ◽  
Pierre Deymier ◽  
Jerome Vasseur
Keyword(s):  
Acoustic Wave ◽  
Surface Acoustic Wave ◽  
Acoustic Waves ◽  
Phononic Crystal ◽  
Surface Acoustic Waves ◽  
Phononic Crystals ◽  
Band Gaps ◽  
Laser Ultrasonics ◽  
Thin Plates ◽  
Wave Band

Novel phononic crystal structures on thin plates for material science applications in ultrasonic range (~ MHz) are described. Phononic crystals are created by a periodic arrangement of two or more materials displaying a strong contrast in their elastic properties and density. Because of the artificial periodic elastic structures of phononic crystals, there can exist frequency ranges in which waves cannot propagate, giving rise to phononic band gaps which are analogous to photonic band gaps for electromagnetic waves in the well-documented photonic crystals. In the past decades, the phononic structures and acoustic band gaps based on bulk materials have been researched in length. However few investigations have been performed on phononic structures on thin plates to form surface acoustic wave band gaps. In this presentation, we report a new approach: patterning two dimensional membranes to form phononic crystals, searching for specific acoustic transport properties and surface acoustic waves band gaps through a series of deliberate designs and experimental characterizations. The proposed phononic crystals are numerically simulated through a three-dimensional plane wave expansion (PWE) method and experimentally characterized by a laser ultrasonics instrument that has been developed in our laboratory.

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