Behaviour of device structures based on IDT-launched bulk acoustic waves in a parallel-sided plate of lithium niobate

1983 ◽  
Vol 19 (21) ◽  
pp. 871 ◽  
Author(s):  
P.D. Bloch ◽  
N.G. Doe ◽  
E.G.S. Paige
Keyword(s):  
Lithium Niobate ◽  
Acoustic Waves ◽  
Bulk Acoustic Waves ◽  
Device Structures

scholarly journals Comparative between (LiNbO3) and (LiTaO3) in detecting acoustics microwaves using classification

2019 ◽  
Vol 8 (1) ◽  
pp. 33
Author(s):  
Hafdaoui Hichem ◽  
Benatia Djamel
Keyword(s):  
Neural Network ◽  
Numerical Analysis ◽  
Lithium Niobate ◽  
Imaginary Part ◽  
Acoustic Waves ◽  
Probabilistic Neural Network ◽  
Lithium Tantalate ◽  
Acoustic Velocity ◽  
Bulk Acoustic Waves ◽  
Piezoelectric Substrate

Our work is mainly about detecting acoustics microwaves in the type of BAW (Bulk acoustic waves), where we compared between Lithium Niobate (LiNbO3) and Lithium Tantalate (LiTaO3) ,during the propagation of acoustic microwaves in a piezoelectric substrate. In this paper, We have used the classification by Probabilistic Neural Network (PNN) as a means of numerical analysis in which we classify all the values of the real part and the imaginary part of the coefficient attenuation with the acoustic velocity for conclude whichever is the best in utilization for generating bulk acoustic waves.This study will be very interesting in modeling and realization of acoustic microwaves devices (ultrasound) based on the propagation of acoustic microwaves.

OBLIQUE ACOUSTIC AXES IN TRIGONAL CRYSTALS

2001 ◽  
Vol 09 (03) ◽  
pp. 1147-1161 ◽  
Author(s):  
V. G. MOZHAEV ◽  
F. BOSIA ◽  
M. WEIHNACHT
Keyword(s):  
Lithium Niobate ◽  
Acoustic Wave ◽  
Surface Acoustic Wave ◽  
Acoustic Waves ◽  
Elastic Symmetry ◽  
Bulk Acoustic Waves ◽  
General Orientation ◽  
General Derivation ◽  
The Subject ◽  
The Relationship

A general analysis on the subject of acoustic axes for bulk acoustic waves in trigonal crystals is presented. It is shown that the effect of piezoelectricity increases the maximum allowable number of acoustic axes in the plane of elastic symmetry from three to five for trigonal crystals of class 3m, and from 3 to 7 for trigonal crystals of class 32. The theory of acoustic axes of general orientation developed by Khatkevich (1962) is revised. A new, simpler and more general derivation of the conditions for the occurrence of acoustic axes of general orientation in crystals is presented. It is found that the previous analytical results and conclusions stating the absence of such axes in trigonal crystals are incorrect. New correct equations for acoustic axes of general orientation in trigonal nonpiezoelectric crystals are derived and confirmed by independent numerical calculations. Acoustic axes of general orientation oblique to the elastic symmetry planes are found to exist in berlinite (class 32) and in nonpiezoelectric lithium niobate (class 3m), however piezoelectricity eliminates these axes in the latter crystal. Some illustrative examples of the relationship between leaky surface acoustic wave branches and acoustic axes in trigonal crystals are given.

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

Manipulation of diamond nanoparticles using bulk acoustic waves

2011 ◽  
Vol 109 (1) ◽  
pp. 014317 ◽  
Author(s):  
Bart Raeymaekers ◽  
Cristian Pantea ◽  
Dipen N. Sinha
Keyword(s):  
Acoustic Waves ◽  
Diamond Nanoparticles ◽  
Bulk Acoustic Waves
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