General numerical implementation of a new piezoelectric shunt tuning method based on the effective electromechanical coupling coefficient [PDF]
Mechanics of Advanced Materials and Structures, 2020 A recently proposed tuning method for resistive-inductive (RL) shunts is implemented in a commercial finite element (FE) code (ANSYS®). A main result of the paper is therefore the consistent formulation of the tuning method in terms of variables directly
Benjeddou, Ayech +2 more
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Micromachines, 2023 This paper presents an advanced method that combines coupling-of-modes (COM) theory and the finite element method (FEM), which enables the quick extraction of COM parameters and the accurate prediction of the electroacoustic and temperature behavior of ...
Lingqi Li +6 more
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Approximate Evaluations of the Modal Effective Electromechanical Coupling Coefficient
, 2009 This contribution reviews and derives, in a unified manner using energy concepts, available formulas in the smart structures literature for the approximate evaluation of the modal effective electromechanical coupling coefficient (EMCC). A new approximate formula is then proposed; it has the advantage to use only short-circuit and open-circuit elastic ...
Ayech Benjeddou
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Twist piezoelectricity: giant electromechanical coupling in magic-angle twisted bilayer LiNbO3
Nature CommunicationsTwisted a pair of stacked two-dimensional materials exhibit many exotic electronic and photonic properties, leading to the emergence of flat-band superconductivity, moiré engineering and topological polaritons.
Hulin Yao +8 more
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Porous Structure Enhances the Longitudinal Piezoelectric Coefficient and Electromechanical Coupling Coefficient of Lead‐Free (Ba0.85Ca0.15)(Zr0.1Ti0.9)O3 [PDF]
Advanced ScienceThe introduction of porosity into ferroelectric ceramics can decrease the effective permittivity, thereby enhancing the open circuit voltage and electrical energy generated by the direct piezoelectric effect.
Zihe Li +8 more
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Aspect ratio dependence of the effective electromechanical coupling coefficient Ke of the transverse vibration mode for a piezoelectric rectangular thin plate [PDF]
AIP Advances, 2019 In this paper, the apparent elasticity method is used to derive the transverse effective electromechanical coupling coefficient Ke of a piezoelectric rectangular thin plate with an arbitrary aspect ratio G (defined as the ratio of the two transverse ...
Bocheng Ji +4 more
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Sensors, 2017 For achieving the power maximum transmission, the electrical impedance matching (EIM) for piezoelectric ultrasonic transducers is highly required.
Yuan Yang +3 more
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Archives of Acoustics, 2014 In this paper the purpose and manner of conducting the process of asymptotic homogenization of a type 1-3 composite structure are presented. The formulation of the homogenization process is reduced to numerical static analysis of an elementary symmetry ...
K. KYCIA, A. NOWICKI, O. GAJL, T.D. HIEN
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Influence of Etching Trench on
Micromachines, 2022 As radio-frequency (RF) communication becomes more ubiquitous globally, film bulk acoustic resonators (FBAR) have attracted great attention for their superior performance.
Chao Gao +6 more
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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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