Results 1 to 10 of about 439 (222)

High Electromechanical Coupling Coefficient of Longitudinally Excited Shear Wave Resonator Based on Optimized Bragg Structure

Micromachines, 2023
In this work, a longitudinally excited shear-wave resonator (YBAR) based on single-crystalline lithium tantalate (LiTaO3, LT) thin film is proposed. The YBAR has a 200 nm X-cut thin film and molybdenum electrode.
Zhiheng Zhang, Weipeng Xuan, Hong Jiang, Weilun Xie, Zhaoling Li, Shurong Dong, Hao Jin, Jikui Luo   +7 more
doaj   +2 more sources

Study on Vibration Characteristics of Functionally Graded Material Composite Spherical Piezoelectric Transducer

Sensors
Non-uniform composite structures for transducers exhibit considerable potential in enhancing impedance matching and efficiency. Here, a functionally graded material composite spherical piezoelectric transducer (FGM-cSPT) is proposed, and a three-port ...
Sha Wang, Junjie Shan
doaj   +2 more sources

research Paper: Investigation of the Effect of Sm3+ Doping on the Piezoelectric Properties of PIN-PMN-PT Ceramics [PDF]

فیزیک کاربردی ایران
Piezoelectric materials, such as sensors and electromechanical transducers, are widely used in applications related to electromechanical energy conversion. Among piezoelectric materials, the ferroelectric compounds of the Relaxor-PT family have attracted
Hadi Papi, Hassan Ahmadvand, Mohsen Yazdanmehr   +2 more
doaj   +1 more source

A Simple Dynamic Characterization Method for Thin Stacked Dielectric Elastomer Actuators by Suspending a Weight in Air and Electrical Excitation

Actuators, 2021
This paper proposes a simple but effective method for characterizing dielectric elastomer actuators (DEAs), especially for thin stacked DEAs, which are promising for haptic devices but which measure the dynamic elastic modulus with great difficulty.
Kentaro Takagi, Yuya Kitazaki, Kota Kondo   +2 more
doaj   +1 more source

Analysis of a Cascaded Piezoelectric Ultrasonic Transducer with Three Sets of Piezoelectric Ceramic Stacks

Sensors, 2019
To increase the ultrasonic intensity and power of a piezoelectric transducer, a cascaded piezoelectric ultrasonic transducer with the three sets of piezoelectric ceramic stacks is analyzed.
Xiangdi Meng, Shuyu Lin
doaj   +1 more source

Preparation, Characterization, and Application of AlN/ScAlN Composite Thin Films

Micromachines, 2023
Piezoelectric aluminum nitride (AlN) thin film, as a commonly used material for high-frequency acoustic resonators, has been a research hotspot in the RF field. Doping Sc elements in AlN is one of most effective methods to improve the piezoelectricity of
Laixia Nian, Yuanhang Qu, Xiyu Gu, Tiancheng Luo, Ying Xie, Min Wei, Yao Cai, Yan Liu, Chengliang Sun   +8 more
doaj   +1 more source

Mechanisms of Concentric Ring Electrodes in Tuning the Performance of Z-Cut Lithium Niobate Ultrasonic Transducers

Sensors
Z-cut lithium niobate single crystal demonstrates considerable promise for contact-based ultrasonic nondestructive testing and structural health monitoring (SHM) transducers due to its high piezoelectric coefficients, strong electromechanical coupling ...
Xuesheng Ouyang, Liang Zhong, Jun Zhou, Guanghua Li, Hui Hu, Kai Wang, Yizhe Jia, Hao Dai, Jinlong Mo, Kaiyan Huang, Jishuo Wang   +10 more
doaj   +1 more source

Simulation and fabrication of high frequency piezoelectric micromachined ultrasonic transducer based on PZT film

上海师范大学学报. 自然科学版, 2023
Piezoelectric micromachined ultrasonic transducer (PMUT) is hotspot in the study of biomedicine ultrasonic imaging. Lead zirconate titanate (PbZrO3-PbTiO3, PZT) piezoelectric film is the key piezoelectric material used in micromechanical ultrasonic ...
LIU Yaqi, CHEN Mingzhu, ZHANG Qiaozhen, ZHAO Xiangyong, WANG Jushan, TANG Yanxue, WANG Feifei, WANG Shuhao, WANG Yaojin, MIAO Bin, LI Jiadong   +10 more
doaj   +1 more source

Design and analysis of innovative multi-frequency ultrasonic probe characteristics

Scientific Reports
This study presents the development of a novel multifrequency ultrasound probe distinguished by its broad bandwidth and high sensitivity. A comprehensive investigation was conducted using theoretical analysis, numerical simulations, and experimental ...
Yu-Lin Song, Tzu-Zin Lin, Shih Hsun Tu, Alexander Stiegler   +3 more
doaj   +1 more source

Effect of Filling Material Properties on 1-3 Piezoelectric Composite Performance

Micromachines
The 1-3 piezoelectric composite is the key component of the acoustic transducer, which is widely used in detection, due to the high energy conversion efficiency, cheap raw material, and low aging. To reveal the influence of epoxy mixture, used to connect
Yao Liu, Yang Zhou, Zhigang Zhao, Jinjie Zhou   +3 more
doaj   +1 more source