Article
Multidisciplinary Sciences
Xin Chen, Hancheng Qin, Xiaoshi Qian, Wenyi Zhu, Bo Li, Bing Zhang, Wenchang Lu, Ruipeng Li, Shihai Zhang, Lei Zhu, Fabrice Domingues Dos Santos, J. Bernholc, Q. M. Zhang
Summary: Introducing a small amount of fluorinated alkyne monomers enhances the polarization change in ferroelectric polymers, leading to a strong electromechanical coupling effect.
Article
Engineering, Mechanical
Ruifeng Wang, Liang Wang, Jiamei Jin, Botao Jia, Quan Zhang, Dawei Wu
Summary: A novel excitation method of torsional vibration is proposed in this study to overcome the manufacturing difficulties and high costs of traditional torsional piezoelectric actuators. Experimental and finite element simulations were conducted to validate the effectiveness of the proposed method, and a corresponding electromechanical coupling dynamic model was developed.
MECHANICAL SYSTEMS AND SIGNAL PROCESSING
(2021)
Article
Engineering, Mechanical
Liang Wang, Ruifeng Wang, Botao Jia, Zhenhua Zhao, Jiamei Jin
Summary: A novel excitation method is proposed in this study to generate torsional vibration in a square cross-section beam by using the d15 vibration mode of rectangular piezoelectric ceramic plates and creating a novel transfer matrix model of square torsional piezoelectric element. A case study and simulation analysis are conducted to confirm the effectiveness of the proposed excitation method and the correctness of the developed model.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2022)
Article
Multidisciplinary Sciences
Jinfeng Liu, Xiangyu Gao, Haonan Jin, Kaile Ren, Jingyu Guo, Liao Qiao, Chaorui Qiu, Wei Chen, Yuhang He, Shuxiang Dong, Zhuo Xu, Fei Li
Summary: This study proposes an orderly stacked structure to achieve all nonzero piezoelectric coefficients and generate artificially coupled multi-vibration modes with ultrahigh strains. A miniature ultrasonic motor based on this structure exhibits a high velocity per volume and a significantly improved moving resolution.
NATURE COMMUNICATIONS
(2022)
Article
Materials Science, Multidisciplinary
Xiaoqing Sun, Jinwei Qiao, Gaofeng Wei, Hui Zhang
Summary: An innovative 3D braiding piezoelectric composite actuator (3D-BPCA) is proposed and compared with traditional piezoelectric ceramics actuator (PZT-5A). The theoretical analysis and numerical simulation show that the 3D-BPCA has better actuating properties and wider application prospects.
RESULTS IN PHYSICS
(2021)
Article
Materials Science, Multidisciplinary
Orlando Rodriguez, J. Enrique Chong-Quero
Summary: This article reviews the derivation of the electromechanical coupling factor k in dynamic regime for four common piezoelectric resonators, demonstrating that the frequency spectrum of k is uniform across the resonators regardless of vibration mode considered. This uniformity can be described by a simple mathematic expression with the 'same form' for all studied vibration modes, shedding new light on the basic functional theory of the piezoelectric resonator.
MATERIALS RESEARCH EXPRESS
(2021)
Article
Materials Science, Ceramics
Hongbin Yuan, Lili Li, Hui Hong, Zhihua Ying, Xiaolong Zheng, Lin Zhang, Fei Wen, Zhuo Xu, Wei Wu, Gaofeng Wang
Summary: BiFeO3-BaTiO3 solid solutions with Li2CO3 sintering aid show reduced sintering temperature, increased relative density, and decreased dielectric loss and strain hysteresis; CMOS technology helps reduce dielectric loss and strain hysteresis in ceramics; BF-BT-L ceramics exhibit positive temperature-dependent strain at 200℃, making them suitable for high-performance lead-free piezoelectric multilayer actuator applications.
CERAMICS INTERNATIONAL
(2021)
Article
Engineering, Aerospace
Yaguang Wu, Yu Fan, Lin LI
Summary: This paper proposes the definition of the Nonlinear Modal Electromechanical Coupling Factor (NMEMCF) and the corresponding numerical method to quantitatively evaluate the electromechanical coupling capability of nonlinear piezoelectric structures. The NMEMCF is found to have a strong correlation with geometric parameters and energy dissipation, making it an important design indicator for piezoelectric damping.
CHINESE JOURNAL OF AERONAUTICS
(2023)
Article
Chemistry, Analytical
Falk-Martin Hoffmann, Keith R. Holland, Nick R. Harris, Neil M. White, Filippo Maria Fazi
Summary: This paper introduces a novel type of actuator that allows for daisy-chaining and reduces stress to the joint connecting to the load, while improving upon the standard cantilever. Simulations and prototype experiments confirm the performance of the proposed device, showing that it can achieve the targeted displacement profile.
Article
Engineering, Mechanical
Yunzhi Huang, Jian Chen, Min Zhao, Miaolin Feng
Summary: The electromechanical coupling characteristics of a double-layer piezoelectric quasicrystal micro/nano-actuator were studied, with a focus on the effects of van der Waals force and Casimir force on phonon stress and displacement. The study also revealed that the phonon-phason coupling elastic coefficient and nonlocal scale parameter have positive and negative effects on static responses.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2021)
Article
Nanoscience & Nanotechnology
Jing Zhang, Yaxiong Guo, Qibin Liu, Fangfang Zeng
Summary: A high-performance piezoceramic was successfully synthesized using multiple sintering aids, and the positive effects of the aids on grain growth and densification were revealed through the study of ceramic microstructure. The multilayer piezoceramic, fabricated using tape casting and low-temperature co-fire methods, exhibited excellent actuating characteristics and outstanding material hardness.
JOURNAL OF SCIENCE-ADVANCED MATERIALS AND DEVICES
(2023)
Article
Materials Science, Ceramics
Zong-Zheng Du, Yi-Xuan Liu, Wen-Qing Wei, Hong Liu, Shen-Dou Jiang, Jing-Zhong Fang
Summary: A piezoelectric ceramics with good electrical properties was prepared at a low firing temperature, exhibiting high normalized strain, Curie temperature, and relative dielectric constant. Some performance parameters slightly decreased with increasing temperature, but high d(33)* values were still obtained at different temperatures.
ADVANCES IN APPLIED CERAMICS
(2021)
Article
Materials Science, Ceramics
Yu Huan, Limin Hou, Tao Wei, Fenghua Jiang, Ting Wang, Longtu Li, Xiaohui Wang
Summary: Multilayer ceramic actuator (MLCA) consisting of MnCO3- and CuO-doped KNN-0.04CaZrO(3) piezoelectric ceramics and Ni inner electrode was co-fired by a two-step sintering process. The well-integrated ceramic layer/electrode interface without interdiffusion and chemical reaction ensures the electrical reliability of MLCA. With a thickness of 0.5 mm, the MLCA composed of 50 μm-thick ceramic layers and 3 μm-thick Ni electrodes achieves a high displacement of 1.8 μm under a low voltage of 200 V (compared to 3700 V for 1 mm-thick bulk ceramics). The excellent electrical performance and low-cost base electrode make KNN-based MLCAs promising lead-free candidates for actuator applications.
JOURNAL OF ADVANCED CERAMICS
(2023)
Article
Engineering, Multidisciplinary
M. Pravika, Jeevamma Jacob, K. Paul Joseph
Summary: This paper presents the design of a linear electromechanical actuator for use with an automated drug dispensing pump, aiming to address drug delivery issues for Parkinson's disease patients. The proposed EMA consists of a lead screw mechanism and gears, and its performance and stability are evaluated through simulation studies.
ENGINEERING SCIENCE AND TECHNOLOGY-AN INTERNATIONAL JOURNAL-JESTECH
(2022)
Article
Engineering, Mechanical
Liang Wang, Pengpeng Yu, Shiyu Zhang, Zhenhua Zhao, Jiamei Jin
Summary: In this study, an electromechanical step-reduction method for piezoelectric composite beams (VPCBs) is proposed to address the limitation of traditional methods in transferring electrical information and depicting electromechanical coupling behaviors. The effectiveness and applicability of the proposed method are demonstrated through experimental verification and calculation results.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2023)
