Results 11 to 20 of about 1,987,184 (244)

Research on Effective Electric-Mechanical Coupling Coefficient of Sandwich Type Piezoelectric Ultrasonic Transducer Using Bending Vibration Mode

Advances in Mechanical Engineering, 2015
An analytical model on electromechanical coupling coefficient and the length optimization of a bending piezoelectric ultrasonic transducer are proposed. The piezoelectric transducer consists of 8 PZT elements sandwiched between four thin electrodes, and ...
Qiang Zhang, Shengjun Shi, Weishan Chen
doaj   +2 more sources

Electromechanical coupling in polaronic ceria

JPhys Energy
Oxygen-defective metal oxides like cerium oxides exhibit giant electrostriction and field-induced piezoelectricity due to a dynamic electrosteric interplay between oxygen defects, ${\text{V}}_{\text{O}}^{ \cdot \cdot }$ , and the fluorite lattice.
Victor Buratto Tinti, Milica Vasiljevic, Mathias Grønborg, Huaiyu Chen, Valdemar Frederiksen, Innokenty Kantor, Jesper Wallentin, Henrik Bruus, Vincenzo Esposito   +8 more
doaj   +3 more sources

Tunable Electromechanical Coupling Coefficient of a Laterally Excited Bulk Wave Resonator with Composite Piezoelectric Film. [PDF]

Micromachines (Basel), 2022
A resonator with an appropriate electromechanical coupling coefficient (Kt2) is crucial for filter applications in radio communication. In this paper, we present an effective method to tune the Kt2 of resonators by introducing different materials into a ...
Xie Y, Liu Y, Liu J, Wang L, Liu W, Soon BW, Cai Y, Sun C.   +7 more
europepmc   +2 more sources

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

Micromachines (Basel), 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.
Zhang Z, Xuan W, Jiang H, Xie W, Li Z, Dong S, Jin H, Luo J.   +7 more
europepmc   +2 more sources

Revealing the Giant Electromechanical Effects in Yttria-Stabilized Zirconia Single Crystal. [PDF]

Adv Sci (Weinh)
Giant electromechanical responses are uncovered in yttria‐stabilized zirconia single crystal (SC‐YSZ), exhibiting pronounced orientation dependence. The giant electrostriction and piezoelectricity are directly correlated with the long‐range transport kinetics of oxygen vacancies.
Yi Z, Pan K, Hu C, Liao L, He Z, Guo Z, Wu Y, Zhao C, Xie S.   +8 more
europepmc   +2 more sources

Analysis on the Radial Vibration of Longitudinally Polarized Radial Composite Tubular Transducer

Sensors, 2020
The radial vibration of a radial composite tubular transducer with a large radiation range and power capacity is studied. The transducer is composed of a longitudinally polarized piezoelectric ceramic tube and a coaxial outer metal tube.
Xiaoyu Wang, Shuyu Lin
doaj   +1 more source

Contribution of Ribbon-Structured SiO₂ Films to AlN-Based and AlN/Diamond-Based Lamb Wave Resonators

Sensors, 2023
New designs based on S0 Lamb modes in AlN thin layer resonating structures coupled with the implementation of structural elements in SiO2, are theoretically analyzed by the Finite Element Method (FEM).
Mohammed Moutaouekkil, Jérémy Streque, Othmane Marbouh, El Houssaine El Boudouti, Omar Elmazria, Philippe Pernod, Olivier Bou Matar, Abdelkrim Talbi   +7 more
doaj   +1 more source

Modal effective electromechanical coupling coefficient of shear-mode piezoceramic sandwich cantilevers with segmented multicore: Experimental and numerical assessments

, 2022
International audienceSmart sandwich cantilevers with aluminum faces and single and double cores, formed by assembled shear-mode piezoceramic patches with same poling, are experimentally and numerically assessed for the first time.
Benjeddou, Ayech, Berik, Pelin
core   +1 more source

Dielectric and piezoelectric properties of cement-containing piezoelectric composites: Experiments and modeling

Materials & Design, 2023
In this work, porous honeycomb lead zirconate titanate (PZT) ceramics with one dimensional ordered pore channels were fabricated by the ionotropic gelation of sodium alginate/PZT suspension with SrCl2 solution, then the piezoelectric cement/PZT paste ...
Wei Liu, Haoxin Sun, Zhonghua Li, Jianhong Wang, Peikang Bai   +4 more
doaj   +1 more source

Inversion-based control of electromechanical systems using causal graphical descriptions [PDF]

, 2006
Causal Ordering Graph and Energetic Macroscopic Representation are graphical descriptions to model electromechanical systems using integral causality. Inversion rules have been defined in order to deduce control structure step-bystep from these graphical
F. Giraud, BOUSCAYROL, Alain, GIRAUD, Frédéric, HAUTIER, Jean-Paul, A. Bouscayrol, DELARUE, Philippe, J. P. Hautier, P. Delarue, E. Semail, B. Lemaire-Semail, KESTELYN, Xavier, P. J. Barrre, BARRE, Pierre-Jean, LEMAIRE-SEMAIL, Betty, SEMAIL, Eric, E. Dumetz, X. Kestelyn, DUMETZ, Eric   +17 more
core   +1 more source