Article
Engineering, Electrical & Electronic
Hanqi Zhang, Qi Wu, Xiangrong Su, Jun Guo, Ke Xiong, Tong Sun, Kenneth T. V. Grattan
Summary: A cantilevered microfiber Bragg grating (CMFBG) sensor with high sensitivity and resonant frequency has been proposed and demonstrated. The CMFBG design allows for the reception of ultrasonic guided waves and the formation of standing waves, resulting in significant signal amplitude enhancements compared to conventional fiber Bragg gratings. The geometric parameters of the CMFBG design have been found to influence the ultrasonic sensitivity and resonant frequencies observed.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2023)
Article
Instruments & Instrumentation
Qiaosheng Pan, Mingfei Zhao, Yifang Zhang, Chen Li, Chunli Zhu, ShanLin Liu
Summary: This study proposes an inertia piezoelectric motor based on bipedal driven, which can work in both quasi-static and resonant states. The motor utilizes two sinusoidal electrical signals with a frequency ratio of 1:2 to generate sinusoidal vibrations and then synthesizes them into mechanical sawtooth vibrations. The resonant frequencies of the motor are adjusted to combine the vibrations in the resonant state. The prototype of the motor shows consistent motion characteristics with theoretical analysis, indicating an effective approach to improve the comprehensive performance of the piezoelectric motor.
SMART MATERIALS AND STRUCTURES
(2023)
Article
Chemistry, Multidisciplinary
Amin Reihani, Yuxuan Luan, Shen Yan, Ju Won Lim, Edgar Meyhofer, Pramod Reddy
Summary: The quantitative mapping of temperature fields with nanometric resolution is crucial in various scientific research areas and emerging technologies. Recent advances in scanning thermal microscopy (SThM) have enabled simultaneous quantification of tip-sample thermal resistance and topography, allowing for quantitative thermometry even in situations where the temperature field is modulated. The introduction of a modulated heat input to the scanning thermal probe (STP) allows for the mapping of unmodulated temperature fields with high spatial and temperature resolution, facilitating temperature mapping of microdevices under practical operating conditions.
Article
Instruments & Instrumentation
Teng Yang, Yuqi Jin, Tae-Youl Choi, Narendra Dahotre, Arup Neogi
Summary: This study presents a novel acoustic doublet meta-material lens that demonstrates far-field sound wave focusing and ultra-long collimation characteristics. The lens has super-resolution detection capabilities and can enable ultrasonic diagnostics deep within materials or biological tissues. It shows the potential of applying acoustic metamaterial elements in practical imaging applications.
SMART MATERIALS AND STRUCTURES
(2021)
Article
Instruments & Instrumentation
Shuai Ju, Masoud Naghdi, Muhammad Aslam, Mitali Hardik Desai, Sreejith Sreedharan, Haifeng Zhang
Summary: The demand for accurate and real-time liquid level monitoring of storage tanks has significantly increased in recent decades. Challenges may arise when volatile liquids experience a drop in level. To address this issue, a resonant Sandwich-structured piezoelectric transducers-cantilever system for volatile alcohol level monitoring is proposed. Results from numerical simulation and experiments show a linear trend within a certain range, indicating potential applications in micro-scale level monitoring systems for various industries.
SMART MATERIALS AND STRUCTURES
(2023)
Article
Instruments & Instrumentation
Xinqi Tian, Weishan Chen, Yingxiang Liu, Jie Deng, Kai Li
Summary: Improving the performance of motion stages driven by piezoelectric actuators is crucial for expanding their applications. This study focuses on improving the output resolution of an H-shaped piezoelectric ultrasonic actuator by using sawtooth excitation voltages instead of conventional sinusoidal voltages. The experimental results demonstrate an upgraded resolution, higher speed, and larger carrying load for the prototype.
SMART MATERIALS AND STRUCTURES
(2022)
Article
Engineering, Electrical & Electronic
Hanqi Zhang, Hengtian Zhu, Qi Wu, Ye Chen, Rong Wang, Fei Xu, Ke Xiong
Summary: In this study, a microfiber Bragg grating (MFBG) bonded using tapered cantilever was designed and investigated using experimental, theoretical, and numerical methods. The tapered structure amplified the ultrasonic signal and eliminated the influences of static strain and evanescent field using the cantilever. Compared to the cantilevered fiber Bragg grating, the sensitivity of the sensor showed an upward trend with decreasing diameter, with 331% and 108% sensitivity increments observed for MFBGs with 20 and 40 μm diameters, respectively. The improvement was particularly apparent at high frequencies of the ultrasonic signal.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2023)
Article
Engineering, Mechanical
Shin Hur, Hoyoon Jeon, Youngsoo Kim, Muhammad A. Shah, Jinsik Kim, Byung Chul Lee, Md. Anzan-Uz-Zaman
Summary: In this study, an acoustic metalens for underwater imaging was designed and the feasibility of subwavelength ultrasonic imaging was demonstrated. The proposed metalens is suitable for high-resolution ultrasound applications, such as biomedical and non-destructive imaging.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2022)
Article
Engineering, Multidisciplinary
Peng Zhao, Peng Wu, Deyuan Zhang, Xilun Ding, Yonggang Jiang
Summary: The study introduces a novel polyimide cantilever-based differential pressure sensor inspired by the bristled wing configuration of tiny insects, which not only maintains comparable sensitivity under low differential pressure conditions but also exhibits advantages in detection range and theoretical upper limit.
BIOINSPIRATION & BIOMIMETICS
(2021)
Article
Engineering, Electrical & Electronic
Yang Xiao, Yong Yang, Chunhua Liu, Jose Rodriguez
Summary: In this study, a novel wireless motor system called the wireless ultrasonic motor (WUM) system is proposed and analyzed. By combining wireless power transfer and ultrasonic motor technology, the system addresses the issues of complex controllers and converters, regular maintenance, and output ripple. Matching inductors and optimized coil structures are designed to improve power quality and filter harmonic voltages.
IEEE TRANSACTIONS ON POWER ELECTRONICS
(2023)
Article
Physics, Applied
Jiahua Cai, Mingcong Dai, Sai Chen, Peng Chen, Jiaqi Wang, Hongting Xiong, Zejun Ren, Shaojie Liu, Zhongkai Liu, Caihua Wan, Ming Bai, Xiaojun Wu
Summary: In this study, efficient injection and accurate detection of femtosecond THz spin currents with nanoscale lateral spatial resolution were achieved using spintronic THz emission nanoscopy (STEN). The integration of nanophotonics, nanospintronics, and THz-nanotechnology into a unified platform enables the characterization of spin states at micro-to-nanoscale densities and accelerates the development of high-frequency spintronic optoelectronic nanodevices, as well as catalyzing other revolutionary technical applications.
APPLIED PHYSICS REVIEWS
(2023)
Correction
Chemistry, Analytical
Michal Nowakowski, Aleksandr Kalinko, Jakub Szlachetko, Rafal Fanselow, Matthias Bauer
Summary: This article corrects the information about the use of high-resolution off-resonant spectroscopy as a probe of oxidation state.
JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY
(2023)
Article
Optics
Abbas Shiri, Ayman F. Abouraddy
Summary: Omni-resonance enables broadening of spectral transmission through preconditioning the incident optical field in a planar cavity, allowing simultaneous resonation of all wavelengths for broadband imaging. The spatial resolution of omni-resonant imaging is determined by the spectral linewidth of the cavity resonance, which surprisingly improves at longer wavelengths due to the negative angular dispersion intrinsic to Fabry-Perot resonances.
Article
Engineering, Civil
Javier Estevez-Cimadevila, Felix Suarez-Riestra, Emilio Martin-Gutierrez, Dolores Otero-Chans
Summary: The behavior of timber-concrete composite floors in an overhanging configuration was analyzed. The connection between the glulam flange and plywood rib was achieved by penetrating the concrete into the holes made in the rib. The results showed high stiffness and strength of the proposed timber-concrete composite overhanging floor solution, making it suitable for high-performance lightweight floors in multi-storey buildings.
ENGINEERING STRUCTURES
(2023)
Article
Engineering, Electrical & Electronic
Naftaly Krakover, B. Robert Ilic, Slava Krylov
Summary: We report on the architecture and operational principle of a resonant cantilever-type displacement sensor. The device is actuated electrostatically and its unique electrode geometry enhances the frequency sensitivity. The dependencies of the device frequency on the beam's deflections and actuation voltages were mapped using a reduced order model backed by numerical simulations. The suggested approach may find applications in a broad range of micro and potentially nano-scale applications.
JOURNAL OF MICROMECHANICS AND MICROENGINEERING
(2022)
Article
Engineering, Mechanical
Fei Lu, Yingxiang Liu, Weishan Chen, Jie Deng, Kai Li, Shijing Zhang, Xinqi Tian
Summary: This study proposes an embedded piezo-compensator (EPC) to eliminate the disturbance in all-radial directions of circular cantilever beams. Experimental results demonstrate that the proposed device can significantly reduce the disturbance in cantilever beams.
MECHANICAL SYSTEMS AND SIGNAL PROCESSING
(2022)
Article
Engineering, Mechanical
Xuefeng Ma, Yingxiang Liu, Jie Deng, Shijing Zhang, Junkao Liu
Summary: This article introduces an inchworm actuator driven by two piezoelectric stacks, which has the advantages of large carrying capacity and no backward motion. By using a unique hinge, the clamping foot can be converted into a clamping unit or an extension unit. The walker-pusher mode utilizes parasitic motion to achieve no-backward linear motion.
MECHANICAL SYSTEMS AND SIGNAL PROCESSING
(2022)
Article
Engineering, Mechanical
Hongpeng Yu, Yingxiang Liu, Jie Deng, Shijing Zhang, Weishan Chen
Summary: This paper proposes a collaborative excitation method to improve the precise trajectory tracking performance of the piezoelectric stick-slip actuator. The experimental results show that the method can completely eliminate rollback and significantly improve motion smoothness. Furthermore, the method also achieves accurate planar tracking.
MECHANICAL SYSTEMS AND SIGNAL PROCESSING
(2022)
Article
Instruments & Instrumentation
Jie Deng, Shijing Zhang, Yiqing Li, Xuefeng Ma, Xiang Gao, Hui Xie, Yingxiang Liu
Summary: A compact inchworm piezoelectric actuator using a three-jaw clamping mechanism has been developed in this study, which can achieve linear motion without auxiliary structures. The actuator demonstrates high maximum speed and thrust force in experiments, showing potential for integration with precision equipment in fields such as biological manipulation robots and aerospace devices.
SMART MATERIALS AND STRUCTURES
(2022)
Article
Instruments & Instrumentation
Weiyi Wang, Jie Deng, Yingxiang Liu, Shijing Zhang, Jing Li, Xiang Gao
Summary: A novel miniature biped piezoelectric robot (MBPR) was designed, which can achieve linear motion under low frequency and low voltage. It has a simple structure and strong load capacity, making it suitable for large-scale movement and tasks in narrow environments.
SMART MATERIALS AND STRUCTURES
(2022)
Article
Automation & Control Systems
Pengfei Du, Yingxiang Liu, Jie Deng, Hongpeng Yu, Weishan Chen
Summary: This paper proposes a novel ultrasonic burnishing system using a flat tool with a piezoelectric longitudinal transducer. The compact system achieves high-precision no-feeding mark planar burnishing without the need for machine tools. Experimental results show that the burnishing carried out by this system significantly reduces the surface roughness of the workpiece and generates a surface without feeding marks, which improves the burnishing accuracy.
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
(2022)
Article
Instruments & Instrumentation
Jie Deng, Weiyi Wang, Shijing Zhang, Fei Lu, Yingxiang Liu
Summary: This article introduces a piezoelectric actuator based on the inertial principle, which can work in three different driving modes. Experimental results show that the actuator has different characteristics in different modes and is suitable for applications that require large ranges, stable carrying capacity, and smooth motions, such as cell surgery and micromanipulation.
SMART MATERIALS AND STRUCTURES
(2022)
Article
Chemistry, Multidisciplinary
Dehong Wang, Yingxiang Liu, Jie Deng, Shijing Zhang, Jing Li, Weiyi Wang, Junkao Liu, Weishan Chen, Qiquan Quan, Gangfeng Liu, Hui Xie, Jie Zhao
Summary: This article introduces a miniature amphibious robot based on vibration-driven locomotion mechanism, which features innovative rigid-flexible hybrid modules and fast movements, making it suitable for narrow amphibious environments.
Article
Engineering, Mechanical
Hengyu Li, Weishan Chen, Yuming Feng, Jie Deng, Yingxiang Liu
Summary: This study proposes a high bandwidth piezo-hydraulic actuator (PHA) based on a resonant active valve piezoelectric pump with sandwich bending transducers (SBTs), which has a wide application prospect. The performance of the PHA is validated through the establishment of a test setup. Additionally, the composition, deformation process, and dynamic model of a variable swept wing (VSW) driven by the PHA are investigated.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2023)
Article
Engineering, Mechanical
Hongpeng Yu, Jie Deng, Yingxiang Liu, Yingzhi Wang
Summary: By using a hybrid actuation mode, piezoelectric precision actuators can achieve significantly higher speeds, with fast speed, high precision, and large workspace, making them suitable for accurate and quick positioning in the microscale.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2023)
Article
Engineering, Mechanical
Xuefeng Ma, Yingxiang Liu, Jie Deng, Xiang Gao, Jianfei Cheng
Summary: This paper presents a compact inchworm piezoelectric actuator with two multi-function driving feet, utilizing two piezoelectric stacks. By optimizing the stiffness and efficiently utilizing the deformations of the driving feet, high output speed and stable step process are achieved.
MECHANICAL SYSTEMS AND SIGNAL PROCESSING
(2023)
Article
Engineering, Multidisciplinary
HongPeng Yu, YingXiang Liu, Jie Deng, ShiJing Zhang, WeiShan Chen
Summary: This paper proposes a piezoelectric robot with continuous walking gait inspired by ants, which can achieve steady precision motion and has the ability of cross-scale velocity and displacement control.
SCIENCE CHINA-TECHNOLOGICAL SCIENCES
(2023)
Article
Automation & Control Systems
Mingxin Xun, Hongpeng Yu, Yingxiang Liu, Jie Deng, Shijing Zhang, Kai Li
Summary: In this paper, an RPA based on the SSCM is proposed to solve the issues of rotary roundness loss and the contradiction between motion range and response speed. Theoretical and finite element models are built to verify and guide the design, and a prototype is fabricated and tested. Experimental results show that the RPA has high resolution and a wide range of rotary angles.
IEEE-ASME TRANSACTIONS ON MECHATRONICS
(2023)
Article
Computer Science, Artificial Intelligence
Da-Wei Zhou, Han-Jia Ye, Liang Ma, Di Xie, Shiliang Pu, De-Chuan Zhan
Summary: This study proposes a new paradigm for few-shot class-incremental learning (FSCIL) based on meta-learning. It synthesizes fake FSCIL tasks to adapt to new classes without forgetting old classes. A calibration module is introduced to calibrate classifiers and prototypes and fill the semantic gap.
IEEE TRANSACTIONS ON PATTERN ANALYSIS AND MACHINE INTELLIGENCE
(2023)
Article
Automation & Control Systems
Hongpeng Yu, Yingxiang Liu, Jie Deng, Jing Li, Shijing Zhang, Weishan Chen, Jie Zhao
Summary: This paper introduces a high-performance micromanipulation robot using bioinspired hexapod piezoelectric technology, which can achieve high precision, multi-degree of freedom motion, and large carrying capacity. The robot can output 6-DOF motions with resolutions in the nanometer scale or smaller, and has high positioning accuracy.
ADVANCED INTELLIGENT SYSTEMS
(2022)
