Aluminum Nitride-Based Adjustable Effective Electromechanical Coupling Coefficient Film Bulk Acoustic Resonator [PDF]
Micromachines, 2023 The arrival of the 5G era has promoted the need for filters of different bandwidths. Thin-film bulk acoustic resonators have become the mainstream product for applications due to their excellent performance.
Yuanhang Qu +9 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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Resonance Spectrum Characteristics of Effective Electromechanical Coupling Coefficient of High-Overtone Bulk Acoustic Resonator [PDF]
Micromachines, 2016 A high-overtone bulk acoustic resonator (HBAR) consisting of a piezoelectric film with two electrodes on a substrate exhibits a high quality factor (Q) and multi-mode resonance spectrum. By analyzing the influences of each layer’s material and structure (
Jian Li, Mengwei Liu, Chenghao Wang
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Giant piezoelectric response and electromechanical coupling in AlScN thin films via multi-scale lattice engineering [PDF]
Nature CommunicationsHigh-performance AlScN thin films are critical for next-generation lead-free piezoelectric applications. Here, giant electromechanical coupling and piezoelectric response are demonstrated in Al0.9Sc0.1N thin films via a multi-scale lattice engineering ...
Zhenyue Cheng +8 more
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Mechanisms of Concentric Ring Electrodes in Tuning the Performance of Z-Cut Lithium Niobate Ultrasonic Transducers [PDF]
SensorsZ-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 +10 more
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Applied Sciences, 2022 The efficiency of electromechanical conversion in piezoelectric elements is assessed according to the magnitude of the electromechanical coupling coefficient.
Josef Novák
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Applied Sciences, 2023 In this study, we propose a fast calculation method that utilizes Kirchhoff’s hypotheses and electroelasticity theory to derive the resonant frequency, antiresonant frequency, and effective electromechanical coupling coefficient of a trilaminar bending ...
Chenhui Zhu +4 more
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High-Frequency Surface Acoustic Wave Resonator with Diamond/AlN/IDT/AlN/Diamond Multilayer Structure
Sensors, 2022 A high-frequency surface acoustic wave (SAW) resonator, based on sandwiched interdigital transducer (IDT), is presented. The resonator has the structure of diamond/AlN/IDT/AlN/diamond, with Si as the substrate.
Liang Lei +5 more
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Micromachines, 2021 This paper proposed a solid-mounted (SM) longitudinally excited shear wave resonator (i.e., YBAR). By adopting a 200 nm x-cut LiNbO3 film, top (aluminum) and bottom (platinum) electrodes in 50 nm thickness and 500 nm width, this resonator simultaneously ...
Zhen-Hui Qin +6 more
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Crystals, 2020 In this work, we report the ultrahigh electromechanical coupling performance of NBT-6BT-KNN lead-free single crystal at room temperature. The thickness mode electromechanical coupling coefficient (kt) and the 31 mode electromechanical coupling ...
Chao Chen +9 more
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