scholarly journals Numerical investigation of a piezoelectric surface acoustic wave interaction with a one-dimensional channel

2006 ◽  
Vol 74 (3) ◽  
Author(s):  
S. Rahman ◽  
M. Kataoka ◽  
C. H. W. Barnes ◽  
H. P. Langtangen
Keyword(s):  
Acoustic Wave ◽  
Numerical Investigation ◽  
Surface Acoustic Wave ◽  
Wave Interaction ◽  
One Dimensional

Design of III‐Nitride multi‐layer structures for optical and surface acoustic wave interaction

2008 ◽  
Vol 123 (5) ◽  
pp. 3276-3276
Author(s):  
Samuel Dupont ◽  
Jean‐Claude Kastelik ◽  
Victor Y. Zhang ◽  
Federica Causa ◽  
Qingbin Meng ◽  
...  
Keyword(s):  
Acoustic Wave ◽  
Surface Acoustic Wave ◽  
Wave Interaction ◽  
Layer Structures

scholarly journals Features of Electro-Induced Periodical Structures in LiTaO3 Single Crystal and Their Interaction with Surface Acoustic Wave

2019 ◽  
Vol 2019 ◽  
pp. 1-12
Author(s):  
Siarhei D. Barsukou ◽  
Jun Kondoh ◽  
Sergei A. Khakhomov
Keyword(s):  
Acoustic Wave ◽  
Surface Acoustic Wave ◽  
Cell Model ◽  
Wave Interaction ◽  
Experimental Investigations ◽  
The Finite Element Method ◽  
Acoustic Wave Propagation ◽  
Electric Potentials ◽  
Periodical Structure ◽  
Induced Structure

In this research, the features of electro-induced periodical structures in the volume of LiTaO3 thin plate were theoretically and experimentally investigated. For the theoretical and experimental investigations, the calculations based on the finite element method and measuring of the surface acoustic wave (SAW) interaction were implemented simultaneously. The observed difference of the electro-induced structures provides a new opportunity to control of the acoustic wave propagation in a ferroelectric substrate. The volume-existed periodical structures were induced as different electric potentials were applied to the surface arranged electrodes. The features of the induced structure were theoretically investigated based on a developed theoretical unit cell model for different induced structure configurations. The properties of the acoustic wave interaction with the periodical structure were studied on the basis of a theoretical full 3D model of an SAW device. A novel controllable SAW device was fabricated and studied experimentally. The experimental results show significant differences in magnitude and phase of both reflected and transmitted signals depending on the induced structure configuration.

scholarly journals Design and Optimization of a Novel SAW Gyroscope Structure Based on Amplitude Modulation with 1-D Phononic Crystals

Micromachines ◽  
2021 ◽  
Vol 12 (12) ◽  
pp. 1485
Author(s):  
Fei Ge ◽  
Liye Zhao ◽  
Yang Zhang
Keyword(s):  
Signal Processing ◽  
Acoustic Wave ◽  
Surface Acoustic Wave ◽  
Amplitude Modulation ◽  
Phononic Crystal ◽  
Defect Mode ◽  
High Sensitivity ◽  
Phononic Crystals ◽  
Linear Range ◽  
One Dimensional

Surface acoustic wave gyroscopes (SAWGs), as a kind of all-solid-state micro-electro-mechanical system (MEMS) gyroscopes, can work normally under extremely high-impact environmental conditions. Among the current SAWGs, amplitude-modulated gyroscopes (AMGs) are all based on the same gyro effect, which was proved weak, and their sensitivity and intensity of the output are both lower than frequency-modulated gyroscopes (FMGs). However, because FMGs need to process a series of frequency signals, their signal processing and circuits are far less straightforward and simple than AMGs. In order to own both high-sensitivity and simple signal processing, a novel surface acoustic traveling wave gyroscope based on amplitude modulation is proposed, using one-dimensional phononic crystals (PCs) in this paper. In view of its specific structure, the proposed gyroscope consists of a surface acoustic wave oscillator and a surface acoustic wave delay line within a one-dimensional phononic crystal with a high-Q defect mode. In this paper, the working principle is analyzed theoretically through the partial wave method (PWM), and the gyroscopes with different numbers of PCs are also designed and studied by using the finite element method (FEM) and multiphysics simulation. The research results demonstrate that under a 1 V oscillator voltage output, the higher sensitivity of −23.1 mV·(rad/s)−1 in the linear range from −8 rad/s to 8 rad/s is reached when the gyro with three PC walls, and the wider linear range from −15 rad/s to 17.5 rad/s with the sensitivity of −6.7 mV·(rad/s)−1 with only one PC wall. Compared with the existing AMGs using metal dots to enhance the gyro effect, the sensitivity of the proposed gyro is increased by 15 to 112 times, and the linear range is increased by 4.6 to 186 times, even without the enhancement of the metal dots.

Gated-charge force microscopy for imaging a surface-acoustic-wave-induced charge in a depleted one-dimensional channel

2008 ◽  
Vol 78 (12) ◽  
Author(s):  
R. Crook ◽  
R. J. Schneble ◽  
M. Kataoka ◽  
H. E. Beere ◽  
D. A. Ritchie ◽  
...  
Keyword(s):  
Acoustic Wave ◽  
Surface Acoustic Wave ◽  
One Dimensional ◽  
Force Microscopy ◽  
Induced Charge ◽  
Wave Induced
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