Article
Chemistry, Physical
Ming Xia, Ziyin Xiong, Zhi Yao, Yi Wu, Qin Cheng, Jia Xu, Ke Liu, Dong Wang
Summary: In this study, gradient structured air filters were prepared by spray-coating PVA-co-PE nanofibers and silver nanowires on nylon mesh. The ANF-6 air filter showed asymmetric wettability and translucency, and exhibited excellent water vapor transmission rate, PM filtration, photothermal performance, thermal insulation, antibacterial properties, and oil-water separation. Additionally, the ANF-6 air filter impregnated with carbon black dispersion served as flexible pressure sensors to monitor human respiration rate and wrist pulse rate.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Optics
Chenying Zhang, Wei Zhou, Da Geng, Cheng Bai, Weida Li, Songyue Chen, Tao Luo, Lifeng Qin, Yu Xie
Summary: Using LDW method to fabricate flexible piezoresistive sensors on PDMS/MWCNTs composites with microstructures, microcones with excellent performance are obtained, showing high sensitivity, wide detection range, and good stability, which can be applied for LED brightness controlling, pulse detection, and voice recognition.
OPTO-ELECTRONIC ADVANCES
(2021)
Review
Polymer Science
Shuoyan Xu, Zigan Xu, Ding Li, Tianrui Cui, Xin Li, Yi Yang, Houfang Liu, Tianling Ren
Summary: Spatial distribution perception is an important trend in flexible pressure sensors, benefiting wearable health devices, bionic robots, and human-machine interaction interfaces by providing more precise tactile perception capabilities. This review summarizes the design considerations and recent advances in flexible piezoresistive arrays, including materials and microstructures, spatial distribution perception, processing methods, and representative applications.
Article
Engineering, Electrical & Electronic
Guodong Wang, Jiajia Yan, Xiaofeng Yang, Xinlin Qing
Summary: A resistive pressure sensor based on a composite conductive layer is developed in this paper, using PDMS as the matrix and SAP(+) as the conductive filler. The improved sensor shows significant improvements in sensitivity, response time, and stability.
IEEE SENSORS JOURNAL
(2022)
Article
Nanoscience & Nanotechnology
Wei Li, Xin Jin, Xing Han, Yeran Li, Wenyu Wang, Tong Lin, Zhengtao Zhu
Summary: A porous and microstructure piezoresistive material made of PDMS and MWCNTs was designed for a flexible and highly sensitive pressure sensor, showing high sensitivity response in a wide pressure range from 1 Pa to 100 kPa.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Engineering, Biomedical
Meng Wang, Hao Zhang, Han Wu, Suqian Ma, Lei Ren, Yunhong Liang, Chunbao Liu, Zhiwu Han
Summary: Researchers have developed a flexible piezoresistive pressure sensor that is highly sensitive in a broad pressure range. By using lotus leaf micropatterned polydimethylsiloxane and multilayer superposition, the sensor achieves a broad pressure range of 312 kPa, a high sensitivity of 2.525 kPa(-1), a low limit of detection (LOD) of < 12 Pa, and a fast response time of 45 ms. It shows potential applications in various human motion detection scenarios and provides guidance for the design of other multifunctional sensors to improve detection performance.
BIO-DESIGN AND MANUFACTURING
(2023)
Article
Engineering, Electrical & Electronic
C. Lai, X. Wu, C. Huang, X. Yuan, H. Liang, S. Wang, K. Lin, Y. Wang
Summary: In this paper, a full textile piezoresistive pressure sensor with high sensitivity and excellent stability was designed, showing potential applications in wearable controller and motion detection. The sensor achieved a fast response time and demonstrated good performance in detecting finger and wrist movements.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Article
Materials Science, Multidisciplinary
Changming Qu, Yuanlong Zhang, Zhihao Chen, Jingjing Yao, Hanxiao Shao, Yun Xu
Summary: Flexible pressure sensors, as an important branch of electronic skin, have been widely developed in recent years. In this paper, a standalone visual pressure sensing system (VPSS) is proposed, which can directly convert pressure signals into luminous intensity. It has flexible and wearable functions, and can be used to sense human movements and pressure distribution.
ADVANCED MATERIALS TECHNOLOGIES
(2023)
Article
Chemistry, Multidisciplinary
Xiujuan Wang, Hui Li, Tanyu Wang, Xin Niu, Yu Wang, Siyi Xu, Yaming Jiang, Li Chen, Hao Liu
Summary: Flexible wearable pressure sensors have significant potential in various applications, but developing sensors with high sensitivity, fast response, and reliable stability through a simple fabrication process remains a challenge. In this study, a simple and efficient method was developed to fabricate lightweight three-dimensional piezoresistive sensing materials, and the assembled pressure sensor demonstrated high sensitivity, wide working range, fast response time, and reliable repeatability.
Article
Engineering, Environmental
Shuo Yang, Kai Ding, Wei Wang, Tianyi Wang, Huiling Gong, Dengkun Shu, Ze Zhou, Long Jiao, Bowen Cheng, Yonghao Ni
Summary: Template-assisted electrospinning was used to fabricate multi-level microstructured pressure sensors with exceptional performance and industrial relevance.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Multidisciplinary
Tao Yang, Weili Deng, Xiang Chu, Xiao Wang, Yeting Hu, Xi Fan, Jia Song, Yuyu Gao, Binbin Zhang, Guo Tian, Da Xiong, Shen Zhong, Lihua Tang, Yonghe Hu, Weiqing Yang
Summary: The hierarchically microstructure-bioinspired piezoresistive sensor exhibits ultrahigh sensitivity, wide pressure detection range, fast response time, and can monitor human physiological signals and movement states successfully.
Article
Nanoscience & Nanotechnology
Yuhuan Lv, Xiaohui Fang, Biao Zhao, Yong Liu, Kai Pan
Summary: In this study, a novel high-performance piezoresistive sensor based on a tri-level wrinkled-vein-sheet structured rGO/nanofiber film was fabricated. The sensor exhibits high sensitivity, wide detection range, and excellent durability. It can accurately recognize human activities, showing potential for future flexible wearable electronic devices.
ACS APPLIED NANO MATERIALS
(2022)
Article
Engineering, Multidisciplinary
Dawei Du, Xinyue Ma, Wenxing An, Shihui Yu
Summary: In this study, a flexible piezoresistive pressure sensor based on silver nanowires and polydimethylsiloxane was developed, which exhibited high sensitivity and a large pressure range. It has great potential in human-machine interaction, human motion monitoring, and intelligent robotic systems.
Review
Chemistry, Multidisciplinary
Thanh Nguyen, Toan Dinh, Hoang-Phuong Phan, Tuan Anh Pham, Van Thanh Dau, Nam-Trung Nguyen, Dzung Viet Dao
Summary: The piezoresistive effect is a dominant mechanical sensing principle widely used in various applications. Researchers have explored methods to enhance this effect and improve sensor sensitivity, discovering interesting phenomena and mechanisms in the process. Advances in enhancement methods have been comprehensively reviewed, showcasing the application of innovative sensing techniques for highly sensitive piezoresistive transducers.
MATERIALS HORIZONS
(2021)
Article
Chemistry, Physical
Ningle Hou, Youwei Zhao, Ronghui Jiang, Lanzhen Nie, Jinxin Yang, Yifan Wang, Ling Li, Xiaoting Li, Wenming Zhang
Summary: This article introduces a flexible pressure sensor based on carbonized dishcloth fibers coated with zeolitic imidazolate framework-67 nanosheets (ZIF-67 @CD). The sensor demonstrates high sensitivity, wide range detection, low detection limit, and excellent stability. It also exhibits exceptional flexibility and compatibility, making it suitable for detecting real-time signals with precision. The pressure-sensitive material for this sensor is prepared using a simple process with low material cost, showing potential for application in low-cost flexible electronics.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Article
Materials Science, Biomaterials
Lijing Wang, Yanyan Cao, Zhizhong Shen, Meng Li, Wendong Zhang, Yu Liu, Yating Zhang, Jiahui Duan, Zhuwei Ma, Shengbo Sang
Summary: In this study, a composite scaffold composed of GelMA and CMCS was fabricated, and its potential to promote angiogenesis was proven. The biocompatibility, cell distribution, and endothelial differentiation of the scaffold were evaluated using various methods. The results showed that the composite scaffold exhibited excellent mechanical properties, CD31 expression, and vasculogenic gene expression. Furthermore, the activity of cells-laden composite scaffold in 3D printing demonstrated the feasibility of bioprinting.
INTERNATIONAL JOURNAL OF POLYMERIC MATERIALS AND POLYMERIC BIOMATERIALS
(2023)
Article
Engineering, Electrical & Electronic
Tian Zhang, Wendong Zhang, Xingling Shao, Yuhua Yang, Yang Wu, Miao Lei, Zhihao Wang
Summary: To improve the imaging quality of CMUT sparse array, the authors propose an imaging strategy combining MSTA imaging mode and CS framework. This strategy includes sparse array generation, ultrasonic signal transmission and echo reception, CS-based data recovery, and beamforming to form an MSTA image. The MSTA-CS mode achieves higher contrast and structural similarity compared to the traditional sparse array mode in both simulations and experiments.
SENSORS AND ACTUATORS A-PHYSICAL
(2023)
Article
Chemistry, Physical
Yang Ge, Lingxiu Chen, Chengxin Jiang, Jianlong Ji, Qiuyun Tan, Douxing Pan, Wendong Zhang, Riguang Zhang, Eli Janzen, James H. Edgar, Shengbo Sang, Haomin Wang
Summary: In this study, triangular zigzag-edged graphene nanoflakes (GNFs) were successfully synthesized and found to exhibit high magnetization. Density functional theory calculations revealed that this magnetic property is a result of superexchange interactions among unpaired electrons at the zigzag C-BN interface. This research provides a promising platform for experimentally achieving GNFs with high electron spin states.
Article
Engineering, Electrical & Electronic
Xiaoxia Chu, Jiangong Cui, Min Zhu, Bofeng Wu, Guojun Zhang, Renxin Wang, Wendong Zhang, Yuhua Yang, Yongfeng Ren
Summary: Due to its high sensitivity and anti-electromagnetic interference, photoacoustic sensor has become a research hotspot in the field of acoustic sensing. A novel high-Q grooved silica waveguide acoustic sensor (GSWAS) is proposed, which is etched and filled with Polydimethylsiloxane (PDMS) above the waveguide coupling region. The sensor achieves a Q factor of 1.82 x 10(6). By using Pound-Drever-Hall (PDH) frequency locking technology, an acoustic sensing system is built to detect the sound signal easily and intuitively. The sensor has a flat response in the frequency range of 0.4-15 kHz, with a high sensitivity of 1143 mV/Pa and a signal-to-noise ratio (SNR) of up to 45.19 dB under the action of an 8 kHz acoustic signal. This article explores a new method of frequency bandwidth and high sensitivity sound detection, laying a foundation in the field of acoustic signal detection such as aeroacoustics and photoacoustic imaging.
IEEE SENSORS JOURNAL
(2023)
Article
Engineering, Multidisciplinary
Shufeng Wu, Qinyu Qiao, Guochang Liu, Haoyu Tan, Guojun Zhang, Wendong Zhang, Renxin Wang
Summary: This paper proposes a MEMS co-vibration combined hydrophone (CCH) for precise positioning of weak acoustic sources in small-volume UUV acoustic self-guided cabins. The CCH consists of a MEMS triaxial accelerometer and a MEMS capacitive omnidirectional microphone. The packaging of the CCH is designed based on the acoustic receiving model of an elastic-free sphere in water. The experimental results demonstrate that the CCH can meet the need for sound source detection and has specific application value.
Article
Nanoscience & Nanotechnology
Yongjiao Sun, Baoxia Wang, Bingliang Wang, Zhenting Zhao, Wenlei Zhang, Wendong Zhang, Koichi Suematsu, Jie Hu
Summary: In this study, novel flower-like PtOx@ZnO/In2O3 hollow microspheres were prepared and systematically evaluated for their gas sensing performances. The ZnIn2 sensor presented a higher response, which was further enhanced by modifying it with PtOx nanoparticles. The Pt@ZnIn2 sensor exhibited outstanding isopropanol detection performance with high response values under different humidity levels.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Engineering, Electrical & Electronic
Lei Wang, Guanzhang Liu, Jiang Xue, Kat-Kit Wong
Summary: This paper proposes an efficient channel prediction method in MIMO systems, named GPODE, which combines genetic programming (GP) with higher-order differential equation (HODE) modeling for prediction. The method describes the variation of one-dimensional data using higher-order differential and models the differential data using GP to obtain an explicit model. It also introduces an effective prediction interval and incorporates the rough prediction results of AR model for improved accuracy. Experimental results using the CDL channel model validate the higher accuracy of the proposed method compared to traditional prediction methods.
IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY
(2023)
Article
Chemistry, Physical
Zhiliang Hou, Xuebiao Li, Xinru Zhang, Wendong Zhang, Zhong Lin Wang, Hulin Zhang
Summary: This study reports a bioinspired sensor and actuator created using a conformable electrode interface on a Venus flytrap. The conformable electrode, with an adhesive hydrogel layer, has low impedance, stretchability, biocompatibility, reusability, and transparency for normal chlorophyll activity. By capturing the stimulated action potential signals from the upper epidermis of flytraps, a plant sensor matrix has been demonstrated, which can guide honeybees by touch during nectar collection. Furthermore, autonomous on-demand actuation on a flytrap is achieved through frequency-dependent action potential modulation triggered by a triboelectric nanogenerator.
Article
Instruments & Instrumentation
Zhenzhen Shang, Libo Yang, Wendong Zhang, Guojun Zhang, Xiaoyong Zhang, Hairong Kou, Junbing Shi, Xin Xue
Summary: This paper proposes a combined noise reduction algorithm and MEMS vector hydrophone DOA estimation algorithm based on singular value decomposition (SVD), variational mode decomposition (VMD), and wavelet threshold denoising (WTD) to solve the problem of strong noise interference affecting DOA estimation. Simulation and field experiments results show that the algorithm has good noise reduction and baseline drift correction effects for nonstationary underwater signals, and high-precision azimuth estimation is realized.
Article
Chemistry, Analytical
Yongjiao Sun, Baoxai Wang, Shuaiwei Liu, Zhenting Zhao, Wenlei Zhang, Wendong Zhang, Koichi Suematsu, Jie Hu
Summary: The fabrication and investigations of a novel NO2 gas sensor based on a 1T and 2H mixed phase WS2 quantum dots (QDs) modified MOF-derived hollow In2O3 (WS2 QDs@In2O3) heterostructure were documented. The proposed gas sensor based on WS2 QDs@In2O3 hollow hexagonal prisms was simple, sensitive, cost-effective and worked at room temperature (25 +/- 2 degrees C). The response value of 3 wt% WS2 QDs@In2O3 (W3In) towards 100 ppm NO2 could reach to 2034, which was an ultra-high value and almost 7.7 times higher than that of pure In2O3. Besides, our sensor showed excellent selectivity to NO2 and could detect concentration down to 100 ppb. The enhanced NO2 sensing performance was observed due to the synergistic effect between WS2 and In2O3. Furthermore, the compensation response values to NO2 based on the response to water vapor under different humidity of W3In were calculated and their fluctuations are within 7.8 % compared with the response under 25 % RH, which could provide a new strategy for accurately detecting NO2.
SENSORS AND ACTUATORS B-CHEMICAL
(2023)
Article
Environmental Sciences
Qingyu Qiao, Xiangzheng Kong, Shufeng Wu, Guochang Liu, Guojun Zhang, Hua Yang, Wendong Zhang, Yuhua Yang, Licheng Jia, Changde He, Jiangong Cui, Renxin Wang
Summary: AUV coordinated formation can improve detection range and efficiency, and requires each AUV to track and locate. We developed a lateral line-inspired MEMS wake detector based on the pressure gradient sensing mechanism, with a sensitivity of 147 mV.(m/s)(-1) and a detection threshold of 0.3 m/s. The detector has vector-detecting capacity and can be promising in AUV positioning and coordinated formation.
Article
Automation & Control Systems
Xingling Shao, Xiaohui Yue, Wendong Zhang
Summary: This article addresses the fuzzy-quantized elliptical target encircling control of quadrotors with arbitrary-time convergence, consisting of translational and rotational designs. The proposed approach includes an arbitrary-time elliptical guidance rule for translational control and a fuzzy-quantized attitude regulation protocol for rotational control. The stability of the overall system is demonstrated and the efficacy of the approach is verified through simulations and experiments.
IEEE TRANSACTIONS ON SYSTEMS MAN CYBERNETICS-SYSTEMS
(2023)
Article
Chemistry, Analytical
Yongjiao Sun, Bingliang Wang, Zhiyuan Lu, Wenlei Zhang, Wendong Zhang, Koichi Suematsu, Jie Hu
Summary: In this study, we fabricated Pd-loaded Co3O4/In2O3 hollow microtubes heterostructures, which show promising potential for detecting trace toluene gas in humid atmosphere. Through characterization and analysis, we confirmed the morphology of the hollow microtubes, structure of the heterojunctions, and the influence of components and Pd NPs loading on gas sensing performance. The Pd@Co3O4/In2O3 (PdCoIn-2) sensor exhibited high responses, low limit of detections, fast response and recovery times, excellent selectivity, repeatability, and long-term stability, making it an efficient sensor for toluene detection.
SENSORS AND ACTUATORS B-CHEMICAL
(2023)
Article
Engineering, Electrical & Electronic
Jintao Zhang, Xingling Shao, Wendong Zhang, Jing Na
Summary: This article proposes a path-following control method that enhances transient performances for networked mobile robots traveling over a single curve. By using a coordinated error based on projective arc length, a path-following controller is designed for multiple robots, achieving a queue formation pattern with equal arc spacing at a uniform velocity. Additionally, a tracking differentiator-based prescribed performance control scheme is proposed to enforce tracking deviations of geometric and dynamic objectives before a specified time. The developed scheme allows for cooperative behavior over a general curve and arbitrary designation of desired settling time for each robot, while ensuring convergence of all error variables.
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT
(2023)
Article
Engineering, Electrical & Electronic
Yanan Geng, Weirong Ren, Guojun Zhang, Peng Chen, Shan Zhu, Yifan Zhang, Yan Liu, Li Jia, Jie Zhang, Yansong Wang, Wendong Zhang
Summary: A hollow mushroom-like cilia-sensitive structure was designed to optimize the sensitivity and detection distance of the existing vector hydrophone in underwater acoustic detection. The optimal size of the hollow mushroom-like cilia MEMS vector hydrophone (MCVH) microstructure was determined by COMSOL5.6 simulation. The hollow structure not only ensured a working bandwidth of 20-1000 Hz but also improved the sensitivity by increasing the receiving area of the sound wave. Test results showed that the hollow structure had obvious 8 directivity with a pit depth larger than 40 dB at 315 Hz. Meanwhile, the sensitivity of MCVH reached -180.9 dB at 1000 Hz, improving by 16.8 dB compared to ciliary MEMS vector hydrophone (CVH).
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT
(2023)
