Article
Chemistry, Multidisciplinary
Zhanmiao Li, Xingyu Yi, Jikun Yang, Lang Bian, Zhonghui Yu, Shuxiang Dong
Summary: Piezoelectric ceramic devices utilize various vibration modes for electromechanical coupling and energy conversion, with the newly developed 3D OSPSU structure artificially generating basic modes across a wide frequency band, providing a new paradigm for piezoelectric device design.
ADVANCED MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Jikun Yang, Faqiang Zhang, Yongxiang Li, Zhifu Liu, Shuxiang Dong
Summary: Designing artificial structures with heterogeneous elements and manipulating their interface coupling ways can bring synthetic neo-nature to functional devices. A design of cofired monolithic actuators can overcome the obstacle of fundamental torsion actuation in integrated piezoceramic components and achieve stable and sizeable linear actuation response. This design introduces a more general route to enable arbitrary modes and actuation states in integrated piezoceramic components.
SCIENCE CHINA-MATERIALS
(2021)
Article
Materials Science, Ceramics
Zhihao Dong, Peiyao Zhao, Zhenyong Cen, Xiaohui Wang
Summary: In the study of Ni-internal-electrode KNN-based MLAs, a tape casting method was used to fabricate MLAs with different layer numbers and thicknesses, which were then sintered in a reducing atmosphere. The MLAs showed reduced driving voltages and increased displacement outputs compared to bulk ceramics, making them more suitable for miniaturization and portability scenarios. However, the piezoelectric properties of the KNN-based materials were still suppressed, indicating a need for further attention to the design of electrode structure and the development of internal electrode paste for MLAs.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2023)
Article
Materials Science, Ceramics
Xiaopin Hu, Teng Cao, Boquan Wang, Zhiyi Wen, Kang Yan, Dawei Wu
Summary: In this study, a low-cost multilayer piezoelectric ceramic actuator (MLA) was prepared using a modified piezoelectric ceramic powder and Ag inner electrode, with a low sintering temperature of 900 degrees C. The MLA exhibited superior piezoelectric properties and a large electric-field-induced strain. Furthermore, the ultrasonic motor composed of this MLA showed ideal vibration mode and achieved a high maximum rotation speed under a load, demonstrating the applicability of this component in practical minimised devices. These findings provide a strategy for fabricating low-cost and high-precision micro-actuators for precision driving.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Ceramics
Jian Chen, Zong-Zheng Du, Yu-Ting Yang, Hong Hu
Summary: PSbN-PZT piezoceramics were fabricated at a low firing temperature using LBCZ sintering aids, exhibiting excellent properties for low-cost multilayer actuators. The material showed a high Curie temperature, good temperature stability, and promising potential for commercial piezoactuator applications.
CERAMICS INTERNATIONAL
(2021)
Article
Automation & Control Systems
Zhanmiao Li, Rongqi Zhu, Xingyu Yi, Shuxiang Dong
Summary: Comprehensive high-precision actuations are in growing demand to meet diversified needs in scientific and industrial fields. Inspired by bionic methodology, a high-power-density bar-type linear piezoelectric ultrasonic actuator (LPUA) has been developed by imitating bicycle movement mechanism. The experimental results indicate that the proposed piezoelectric actuator with excellent actuation performances has broad application scenarios, and its bionic motion design method would have inspirational significance for creating new piezoelectric devices with more attractive properties.
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
(2023)
Article
Automation & Control Systems
Min Pan, Chenggang Yuan, Tom Pickford, Jianhui Tian, Christopher Ellingford, Ning Zhou, Christopher Bowen, Chaoying Wan
Summary: This article introduces a novel piezoelectric-driven self-healing leaf-motion mimic actuator, combining a thermoplastic MGSBS elastomer with a piezoelectric MFC. It is the first demonstration of a self-sensing and self-healing actuator-sensor system, capable of mimicking leaf motion and possessing built-in dynamic sensing and room-temperature self-healing capabilities. These new results demonstrate the feasibility and potential of the new actuator for use in complex soft autonomous systems.
ADVANCED INTELLIGENT SYSTEMS
(2021)
Article
Acoustics
Qingqing Ke, Weng Heng Liew, Lei Zhang, Chin Yaw Tan, Chang-Yun Jiang, Chee Kiang Ivan Tan, Kui Yao
Summary: This article presents the design and fabrication of a focused 5-MHz 128-element linear-array ultrasonic transducer with concave structure, using piezoelectric ceramic, showcasing higher bandwidth and lateral resolution.
IEEE TRANSACTIONS ON ULTRASONICS FERROELECTRICS AND FREQUENCY CONTROL
(2021)
Article
Engineering, Multidisciplinary
David Tan, Yu-Cheng Wang, Eetu Kohtanen, Alper Erturk
Summary: This research presents experimental studies on a trout-inspired multifunctional robotic fish that can swim underwater and harvest energy. The robot, designed with fiber-based flexible piezoelectric composites, showed high swimming speed and hydrodynamic thrust in test settings, and was able to harvest low-power electricity from flow-induced vibrations for potential applications in powering sensors.
BIOINSPIRATION & BIOMIMETICS
(2021)
Article
Chemistry, Analytical
Georg C. Schmidt, Jonas M. Werner, Thomas Weissbach, Joerg Strutwolf, Robert Eland, Welf-Guntram Drossel, Arved C. Hubler
Summary: This study demonstrates a novel paper-based multifunctional haptic feedback device that provides clear tactile feedback, audible information, and color printing for interactive displays. The device is flexible and lightweight, and exhibits high out-of-plane deflection at a moderate driving voltage.
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
Thermodynamics
M. W. Alkanj, A. Kynast, M. Toepfer, F. Schubert, J. Toepfer
Summary: For the fabrication of competitive lead-free piezoceramic multilayer actuators (MLA) with base metal electrodes (BMEs), precise control of the oven atmosphere is required to maintain the desired phase composition and functional performance of the piezoceramics and electrodes. The debindering process, which is critical for defect-free multilayer laminates and preventing electrode oxidation, has been studied in KNN-based MLAs with Ni electrodes. The results indicate that binder burnout in reducing atmosphere protects the Ni layers, while complete binder removal with little Ni oxidation is achieved at 350°C in air, making it suitable for MLA preparation.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2023)
Article
Chemistry, Analytical
Liyuan He, Zhiyi Wen, Boquan Wang, Xiaoniu Li, Dawei Wu
Summary: A resonant fiber scanner driven by co-fired multilayer piezoelectric ceramics (CMPCs) is proposed in this paper, which achieves efficient and fast space-filling scanning. The theoretical, simulation and experimental results validate the feasibility of the proposed scanner structure and provide new ideas for the design of resonant fiber optic scanners.
Article
Chemistry, Multidisciplinary
Salvatore Ameduri, Armando Castrovinci, Alessia Serena Perna, Antonio Viscusi, Antonio Concilio, Luigi Carrino
Summary: This study investigates the effects of geometric and mechanical parameters in curved and relatively soft structures integrated with piezoelectric actuators. Parameters such as curvature, location, extension of the piezo device, bonding thickness, and strength are considered to develop a potentially lighter model that replaces the piezoelectric device with pin forces. The layout and values of the pin forces are strongly dependent on the curvature. Comparative analysis between finite element models with and without the piezo device reveals useful indicators for lighter modeling approaches and predicting the effectiveness of the piezoelectric device.
APPLIED SCIENCES-BASEL
(2023)
Article
Automation & Control Systems
Jie Deng, Yingxiang Liu, Shijing Zhang, Jing Li
Summary: A piezoelectric platform driven by a bionic quadruped piezoelectric actuator has been developed, utilizing a combination of bionic walking and swinging actuation modes to achieve nanopositioning in a large travel range. Through open-loop and closed-loop experiments, the effectiveness of the method in enhancing positioning precision and travel range has been confirmed.
IEEE-ASME TRANSACTIONS ON MECHATRONICS
(2021)
Article
Materials Science, Ceramics
Shuai Yang, Mingwen Wang, Lu Wang, Jinfeng Liu, Jie Wu, Jinglei Li, Xiangyu Gao, Yunfei Chang, Zhuo Xu, Fei Li
Summary: Textured PMN-28PT ceramics with high-quality texturing degree of 99% and using only 1 vol.% of BT templates were successfully fabricated, showing 80% piezoelectric coefficient and 96% electromechanical coefficient comparable to single crystal counterparts. With further enhancement of piezoelectric properties through AC-poling, the textured PMN-28PT ceramics are considered promising for advanced electromechanical devices due to their high properties, low cost, and easy mass production.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2022)
Article
Physics, Applied
Shuai Yang, Liao Qiao, Jing Wang, Mingwen Wang, Xiangyu Gao, Jie Wu, Jinglei Li, Zhuo Xu, Fei Li
Summary: This study characterizes the full electromechanical parameters of textured PIN-PSN-PT ceramics, demonstrating their superior piezoelectric coefficients and electromechanical coupling factors compared to commercial PZT-5H ceramics. The textured PIN-PSN-PT ceramics also exhibit lower dielectric constants and better thermal stability, making them promising for the development of piezoelectric devices.
JOURNAL OF APPLIED PHYSICS
(2022)
Article
Agronomy
Xuheng Gao, Shiping Hu, Zeqi Liu, Hongwei Zhu, Jikun Yang, Qingyu Han, Yixin Fu, Jianqiang Miao, Biao Gu, Xili Liu
Summary: Phytophthora litchii has shown medium to high resistance risk to ametoctradin in laboratory tests, with several mutations identified in the PlCyt b gene associated with ametoctradin resistance. This study provides important insights into the resistance mechanisms and future detection methods for ametoctradin-resistant strains in Phytophthora litchii.
PEST MANAGEMENT SCIENCE
(2022)
Article
Acoustics
Guo Li, Junsuo Qu, Long Xu, Xiaoli Zhang, Xiangyu Gao
Summary: This paper investigates the multi-frequency characteristics of a longitudinal ultrasonic transducer with a stepped horn, and optimizes the design using the electromechanical equivalent circuit method, including key performance parameters such as input impedance and velocity amplification ratio of the transducer. The relationships between electromechanical coupling coefficients, velocity amplification, excitation position of the piezoelectric stack, and size of the stepped horn are analyzed to determine the optimal design parameters of the multi-frequency transducer. Experimental testing of the electromechanical properties of the transducer validates the theoretical analysis and finite element results.
Article
Physics, Applied
Liao Qiao, Xiangyu Gao, Haonan Jin, Benjian Xin, Jinfeng Liu, Huaibin Zheng, Shuxiang Dong, Zhuo Xu, Fei Li
Summary: A new piezoelectric lens with high focal sensitivity and fast response time is designed by using polydimethylsiloxane films and PIMNT relaxor ferroelectric single crystals.
APPLIED PHYSICS LETTERS
(2022)
Article
Materials Science, Ceramics
Lichen Luo, Jinglei Li, Mingwen Wang, Shuai Yang, Jie Wu, Xiangyu Gao, Chunchun Li, Wenya Du, Lin Zhang, Fei Li
Summary: In this study, Nb-doped SrTiO3 ceramics were prepared and found to exhibit high dielectric permittivity and low dielectric loss. XRD analysis indicated a high purity with no secondary phase. XPS experiments confirmed the influence of Nb doping on the high dielectric performance.
CERAMICS INTERNATIONAL
(2022)
Article
Computer Science, Artificial Intelligence
Zhou Wei, Peng Yuhan, Ji Jianhang, Yang Jikun, Bai Weiqi, Yi Yugen, Wang Wenle
Summary: This paper proposes a novel network called RMSDSC-Net for accurate segmentation of optic disc and optic cup in glaucoma diagnosis. The network achieves a balance between segmentation performance and computational efficiency through modules such as multiscale input, depthwise separable convolution unit, dilated convolution block, and external residual connection. The proposed approach outperforms state-of-the-art methods in extensive experiments on two publicly available databases.
INTERNATIONAL JOURNAL OF INTELLIGENT SYSTEMS
(2022)
Article
Agronomy
Xiong Li, Jikun Yang, Qinghong Jiang, Lijun Tang, Ziwei Xue, Haihong Wang, Deyou Zhao, Jianqiang Miao, Xili Liu
Summary: Florylpicoxamid, a novel fungicide, demonstrates strong inhibitory activity against B. cinerea and shows potential for gray mold control and managing fungicide resistance.
PEST MANAGEMENT SCIENCE
(2022)
Article
Engineering, Mechanical
Jianglei Chang, Zhaoqiang Chu, Xiangyu Gao, A. I. Soldatov, Shuxiang Dong
Summary: This article introduces a magnetoelectric-ultrasonic hybrid transducer and multimodal system for quantitative non-destructive evaluation of metal materials. The system is able to detect surface and internal defects simultaneously with high accuracy and resolution.
MECHANICAL SYSTEMS AND SIGNAL PROCESSING
(2023)
Article
Physics, Applied
Mingzi Liu, Shiyan Zhao, Jinfeng Liu, Xu Han, Xiangyu Gao, Fei Li
Summary: This paper proposes a vortex-induction underwater piezoelectric energy harvester based on a Pb(In1/2Nb1/2)O-3-Pb(Mg1/3Nb2/3)O-3-PbTiO3 (PIN-PMN-PT) single crystal macro-fiber composite (MFC). The designed underwater energy harvester exhibits a high output voltage and power density, surpassing the state-of-the-art PZT ceramics-based underwater energy harvester.
APPLIED PHYSICS LETTERS
(2023)
Article
Physics, Applied
Shuai Yang, Fenghua Tian, Chunchun Li, Mingwen Wang, Jinjing Zhang, Qingshan Zhu, Jie Wu, Jinglei Li, Xiangyu Gao, Fei Li
Summary: In this work, <001>-oriented Pb(In1/2Nb1/2)O-3-Pb(Sc1/2Nb1/2)O-3-PbTiO3 textured ceramics were fabricated by the template grain growth method. The electromechanical properties of these ceramics under different external fields were characterized and analyzed. The results showed that the dielectric constants of all textured ceramics increased with uniaxial prestress and hydrostatic pressure, but decreased with the increase of d.c. bias electric field. The textured ceramic with 3 vol. % BT templates exhibited the best stability under external fields, with less than 2% change in the electromechanical coupling factors under hydrostatic pressure increase to 100 MPa.
JOURNAL OF APPLIED PHYSICS
(2023)
Article
Instruments & Instrumentation
Jikun Yang, Jinxiu Zhang, Jihe Wang, Wenjian Tao
Summary: This paper presents a new Kalman filter-based model predictive control method for fault-tolerant control of a drag-free satellite subject to actuator failures and input saturations. A new fault-tolerant design scheme is proposed based on the developed dynamic model and the Kalman filter strategy, addressing the challenging situation of measurement noise and external disturbance. Numerical simulations are conducted to verify the correctness and effectiveness of the proposed method.
REVIEW OF SCIENTIFIC INSTRUMENTS
(2023)
Article
Chemistry, Analytical
Yu Zhang, Yuan Liu, Juzheng Zhang, Zhenkun Lu, Jikun Yang
Summary: This study investigates a distributed six-degree-of-freedom (6-DOF) cooperative control for multiple spacecraft formation considering parametric uncertainties, external disturbances, and time-varying communication delays. Unit dual quaternions are used to describe the kinematics and dynamics models of the 6-DOF relative motion of the spacecraft. A distributed coordinated controller based on dual quaternions with time-varying communication delays is proposed. An adaptive coordinated control law is developed to compensate for parametric uncertainties and external disturbances. Numerical simulations show the effectiveness of the proposed method in cooperative control of attitude and orbit for the multi-spacecraft formation.
Article
Chemistry, Analytical
Yu Zhang, Yuan Liu, Jikun Yang, Zhenkun Lu, Juzheng Zhang
Summary: This paper studies the attitude-orbit coordination control of multiple spacecrafts and test masses, and proposes a distributed coordination control law based on dual quaternions for spacecraft formation. A cooperative feedback control law based on a consistency algorithm is designed to achieve the consistent attitude tracking of multiple rigid bodies and maintain the specific formation configuration.
Article
Chemistry, Analytical
Zhenkun Lu, Jihe Wang, Xiaobin Lian, Juzheng Zhang, Yu Zhang, Jikun Yang
Summary: This study proposes a strategy for minimum fuel formation reconfiguration in high Earth orbit for space gravitational wave detection missions. A control strategy of a virtual formation is used to overcome limitations in measurement and communication. A linear dynamics model is used to describe the relative motion in the virtual formation and a reconfiguration strategy based on continuous low thrust is investigated. Simulation results demonstrate the effectiveness of the proposed method.
