Results 21 to 30 of about 1,987,184 (244)
Sensors, 2017 The input electrical impedance behaves as a capacitive when a piezoelectric transducer is excited near its resonance frequency. In order to increase the energy transmission efficiency, a series or parallel inductor should be used to compensate the ...
Shuyu Lin, Jie Xu
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Dynamic Propagation Characteristics of a Mode-III Interfacial Crack in Piezoelectric Bimaterials
Advances in Materials Science and Engineering, 2022 This article presents the dynamic behavior of a semi-infinite interfacial crack in piezoelectric bimaterials under impact loading. With the help of the transform methods (the Laplace transforms and Fourier transforms), the problem is studied with the ...
Yani Zhang, Junlin Li, Xiufeng Xie
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Lead-Free AE Sensor Based on BZT–BCT Ceramics
Sensors, 2021 In this study, an acoustic emission (AE) sensor was fabricated using lead-free Ba(Zr0.2Ti0.8)O3–0.5(Ba0.7Ca0.3)TiO3 (BZT–BCT) ceramics. The acoustic and electromechanical properties of the AE sensor were determined by the shapes of the piezoelectric ...
Dong-Jin Shin +6 more
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Love Wave Ultraviolet Photodetector Fabricated on a TiO2/ST-Cut Quartz Structure
International Journal of Photoenergy, 2014 A TiO2 thin film deposited on a 90° rotated 42°45′ ST-cut quartz substrate was applied to fabricate a Love wave ultraviolet photodetector. TiO2 thin films were grown by radio frequency magnetron sputtering.
Walter Water, Yi-Shun Lin, Chi-Wei Wen
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Micromachines, 2022 Lead-free environmentally friendly piezoelectrical materials with enhanced piezoelectric properties are of great significance for high-resolution ultrasound imaging applications.
Dongming Fan +12 more
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Enhanced electromechanical coupling of piezoelectric beams through an innovative design
, 2023 International audienceThis work reports the finite element model simulations of an innovative design of piezoelectric cantilevers in order to maximize their global electromechanical coupling coefficient k².A strong electromechanical coupling coefficient ...
Freychet, Olivier +5 more
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Sensors, 2022 In this paper, a flexible piezoelectric micromachined ultrasonic transducer (PMUT) based on Scandium (Sc)-doped Aluminum Nitride (AlN) film was designed and modeled by the three-dimensional finite element method (3D-FEM).
Qinghua Ren +4 more
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Enhanced Properties of SAW Device Based on Beryllium Oxide Thin Films
Crystals, 2021 The present study depicts the first-ever optimized surface acoustic wave (SAW) device based on Beryllium Oxide (BeO) thin film. The feasibility of surface acoustic wave devices based on BeO/128° YX LiNbO3 layered structure has been examined theoretically.
Namrata Dewan Soni, Jyoti Bhola
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An energetic definition of the electromechanical coupling coefficient for CMUTs
, 2001 The most important property of an electromechanical transducer is its ability to convert electrical energy into mechanical energy and vice versa. This energy conversion is fully characterized by the electromechanical coupling coefficient k. In this paper
M. PAPPALARDO +7 more
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, 1998 This paper describes a super high electromechanical coupling SAW propagating on potassium niobate (KNbO3) substrate and its applications for low-loss, wide band and temperature stable SAW filters. KNbO3 has large piezoelectric constants.
K. Yamanouchi +3 more
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