A5023409673- Acoustic Wave Resonator Technologies
- Advanced MEMS and NEMS Technologies
- Ultrasonics and Acoustic Wave Propagation
- Mechanical and Optical Resonators
- Adhesion, Friction, and Surface Interactions
- Biomedical and Engineering Education
- Innovative Educational Techniques
- Ferroelectric and Piezoelectric Materials
- Advanced Data Storage Technologies
- Engineering Education and Technology
- Educational Reforms and Innovations
- Software Engineering Research
- Model-Driven Software Engineering Techniques
- Simulation Techniques and Applications
- Simulation and Modeling Applications
- Expert finding and Q&A systems
- Virtual Reality Applications and Impacts
- Medical Research and Treatments
- Parallel Computing and Optimization Techniques
- Distributed and Parallel Computing Systems
Shandong Normal University
2018-2024
Chinese Academy of Sciences
2014-2015
Institute of Acoustics
2012
A new surface acoustic wave (SAW)-based rate sensor pattern incorporating metallic dot arrays was developed in this paper. Two parallel SAW delay lines with a reverse direction and an operation frequency of 80 MHz on same X-112°Y LiTaO3 wafer are fabricated as the feedback two oscillators, mixed oscillation used to characterize external rotation. To enhance Coriolis force effect acting propagation, copper (Cu) array deposited along propagation path devices. The approach partial-wave analysis...
The surface acoustic wave (SAW) gyroscopic effect in an interdigital transducer (IDT) deposited on a piezoelectric substrate is different from that the due to reflection induced by IDT. In this work, extended coupling-of-mode (COM) model including and was developed analyze SAW effect. First, dispersion characteristics parameters of were fitted according data derived using finite element method (FEM). Then, variations stop band edge frequency calculated COM theory integrating into model. We...
The optimization of an surface acoustic wave (SAW)-based rate sensor incorporating metallic dot arrays was performed by using the approach partial-wave analysis in layered media. optimal chip designs, including material choice piezoelectric crystals and dots, thickness, operation frequency were determined theoretically. theoretical predictions confirmed experimentally developed SAW composed differential delay line-oscillators a array deposited along propagation path lines. A significant...
This paper presents a new numerical approach for the full extraction of coupling-of-modes (COM) parameters by stationary and eigenfrequency analyses in finite element method (FEM). is fast extracting from results static analysis analysis. It avoids long calculation time admittance frequency response analysis, which commonly used COM parameters. In addition to usual (velocity, reflection coefficient, transduction coefficient capacitance), phases can be also extracted with this method. The...
A surface acoustic wave (SAW) gyroscope has many unique advantages, but a low detection sensitivity limits its development. Previous studies have shown that adding metal dot array to the propagation path of SAW delay line can enhance Coriolis force and further improve sensitivity. Therefore, in order optimize performance sensor, 128°YX-LiNbO3, ST-X Quartz X112°Y-LiTaO3 piezoelectric substrates were selected by finite element method analyze influence size on gyroscopic effect this paper. The...
The SAW (surface acoustic wave) gyroscopic effect is a key parameter that reflects the sensitivity performance of angular velocity sensors. This study found adding layer non-piezoelectric material with lower reflection coefficient than upper-layer below piezoelectric substrate to form double-layer structure significantly enhanced effect, and smaller lower-layer material, stronger values being reached were two three times those single-layer structures. was confirmed using three-dimensional...
Electrode-width-controlled (EWC) single-phase unidirectional transducers (SPUDT) contribute to reduction of insertion loss surface acoustic wave (SAW) devices due their strong properties. In this work, we propose a method optimize the unidirectionality EWC-SPUDT based on our research results that cell is strongly related its reflectivity and angle. Furthermore, in order ensure achieve low loss, simulator finite element (FEM) used study relationship between geometrical configuration...
Weak Coriolis force leads to low detection sensitivity of the surface acoustic wave (SAW) based gyroscope. To enhance force, a metallic dot array was advised deposit along SAW propagation path, and it is possible develop new progressing wave-based gyroscope with higher sensor sensitivity. In this paper, approach partial-wave analysis in layered media used analyze theoretically gyroscopic effect YZ-LiNbO <inf xmlns:mml="http://www.w3.org/1998/Math/MathML"...
Experimental teaching is one of the key contents engineering education and it also a powerful means to cultivate research quality undergraduate students. It enables students gradually learn master ability solve complex problems, thereby meeting requirements
With the advancement of education digital transformation, research on design virtual simulation systems and their application as teaching tools has become increasingly important both domestically internationally. This paper takes computer assembly maintenance courses in vocational school an example, utilizing 3D Max for modeling constructing a system based Unity platform. can help students get familiar with through operations, reduce equipment loss caused by misoperation actual course....