Article
Agronomy
Yuhi Satoh, Hideki Kakiuchi
Summary: The study investigated the performance of a low-cost soil water content sensor in monitoring volumetric soil water content in agricultural fields. Calibration methods were established to correct the influences of soil temperature and electrical conductivity on soil water content. Results showed higher accuracy in sensor measurements under certain conditions, confirming the usefulness of the sensor in monitoring soil water content in agricultural fields.
AGRICULTURAL WATER MANAGEMENT
(2021)
Article
Agricultural Engineering
Chao Meng, Wei Yang, Xinjian Ren, Dong Wang, Minzan Li
Summary: Soil texture is a crucial factor affecting soil properties, and rapid acquisition of soil texture information is important for accurate farmland management. Traditional soil texture analysis methods are complex and do not meet the requirements for temporal and spatial resolution. This research presents a self-developed vehicle-mounted in-situ soil texture detection system, which can predict soil texture type and particle composition, and obtain real-time data without soil sample preprocessing.
INTERNATIONAL JOURNAL OF AGRICULTURAL AND BIOLOGICAL ENGINEERING
(2023)
Article
Materials Science, Multidisciplinary
Pingping Zhang, Ning Ding, Binyang Du, Jingjing Nie
Summary: In this work, hydrogels with mechanical strengths over MPa level and high equilibrium water content were successfully synthesized by combining the advantages of sodium alginate and tamarind gum. These hydrogels exhibited excellent properties, including high elastic modulus, fracture strength, and elongation strain at break, as well as effective energy dissipation mechanisms, self-recovery properties, and environmental stabilities. The hydrogels also showed electrical conductivity and strain sensitivity when soaked in NaCl solution, making them suitable for strain sensors.
MATERIALS TODAY COMMUNICATIONS
(2022)
Article
Chemistry, Multidisciplinary
Ruwei Chen, Hao Tang, Yuhang Dai, Wei Zong, Wei Zhang, Guanjie He, Xiaohui Wang
Summary: MXene-hemicellulose films with high electrical conductivity and mechanical strength are suitable for high-performance electrode materials such as supercapacitors and humidity sensors.
Article
Engineering, Multidisciplinary
Chao Meng, Wei Yang, Dong Wang, Ziyuan Hao, Minzan Li
Summary: This study introduces a vehicle-mounted BD detection system, which estimates soil bulk density based on soil electrical conductivity, soil mechanical resistance, and soil surface images. The system can provide a fast, economical, and efficient analysis of soil physical properties.
Article
Engineering, Civil
Xiaofei Yan, Xiaobo Song, Yunbo Wang, Wei Wang, Qiang Cheng, Xiaolin Yang, Taisheng Du
Summary: A pipeline robot system was designed to monitor soil water content distribution and overcome technical problems in existing monitoring platforms. The system consists of a robot, base station, and PVC pipe, allowing measurement in any direction. Tests and field experiments showed satisfactory performance, indicating potential for long-term soil water content monitoring.
JOURNAL OF HYDROLOGY
(2023)
Article
Soil Science
Yongwei Fu, Robert Horton, Josh Heitman
Summary: The study introduced a new method to estimate soil water retention curves parameters using soil electrical conductivity and water content, showing that the new method accurately estimates SWRCs compared to direct measurements.
SOIL & TILLAGE RESEARCH
(2021)
Article
Chemistry, Analytical
Yuki Kojima, Manabu Matsuoka, Tomohide Ariki, Tetsuo Yoshioka
Summary: In this study, a sensor was developed to simultaneously measure soil water content, electrical conductivity, temperature, and matric potential. The sensor was tested in laboratory and field conditions, and showed accurate measurements and sufficient lifetime and performance for agricultural use.
Article
Materials Science, Multidisciplinary
Yong Wei, Ze-Rui Xie, Xian-Jun Wu, Tong Liu, Zheng-Dao Li
Summary: Mo-Cu/Cu plates were fabricated by explosive welding, and the influence of Mo content on their interfacial microstructure and properties was investigated. Increasing the Mo content to 70 wt% resulted in improved performance.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Engineering, Electrical & Electronic
Xiaomin Zhang, Shuo Chen, Ziyang Ding, Mei Chen
Summary: The strength of traditional hydrogel sensor is low, which limits its application. In this study, a high strength wearable strain sensor is designed using a flexible hydrogel with interpenetrating network cross-linking structure. By incorporating silica emulsion as a reinforcing filler, the strength of the hydrogel is significantly improved. The doped hydrogel exhibits excellent mechanical and electrical properties, with a tensile strength of 1.46Mpa, an elastic modulus of 615 kPa, and a toughness of 2578 kJ/m3. It also shows good flexibility, stretchability, sensing capabilities, and electrical conductivity in a wider strain range of 5-40%, enhancing its practicability and durability in real-time human motion detection and wearable devices.
SENSORS AND ACTUATORS A-PHYSICAL
(2023)
Article
Agriculture, Multidisciplinary
Dong Wang, Wei Yang, Chao Meng, Yongyan Cao, Minzan Li
Summary: To provide real-time, online, and accurate measurements of soil electrical conductivity (EC) and moisture content (SM) in large-scale agricultural fields and guide field management, a vehicle-mounted online EC and SM measurement system based on the fusion of current-voltage six-terminal method and near-infrared spectral information was developed and tested. The experimental results showed that the binary model of the detection system fused with spectral data significantly improved the accuracy of electrical conductivity detection, and the moisture prediction accuracy met the needs of farmland detection, enabling scientific and precise farmland management.
COMPUTERS AND ELECTRONICS IN AGRICULTURE
(2023)
Article
Chemistry, Analytical
Ryuki Shigemasu, Yuki Teraoka, Satoshi Ota, Harutoyo Hirano, Keita Yasutomi, Shoji Kawahito, Masato Futagawa
Summary: This study aimed to develop a simple circuit system for measuring moisture content and ion concentration. By designing a specific circuit and algorithm, the voltage transient characteristics of the soil were successfully converted into square waves, from which the resistors and capacitors values were calculated. Experimental results demonstrated the effectiveness of this new circuit system in accurately measuring water content and ion concentration.
Article
Geochemistry & Geophysics
Federico D. Munch, Alexander Grayver
Summary: The USArray survey using magnetotelluric (MT) method provides a unique data set for imaging the electrical conductivity distribution in the United States. This study presents a new 3-D electrical conductivity model (MECMUS-2022) derived from 1291 USArray MT stations. The model incorporates a novel multi-scale imaging approach and accounts for the complex coastline and natural resolution footprint of MT transfer functions.
EARTH AND PLANETARY SCIENCE LETTERS
(2023)
Article
Chemistry, Multidisciplinary
Lizhen Lian, Qian Zhang, Wenbo Li, Bin Wang, Qijie Liang
Summary: A non-invasive shadow probe (SP) based on the shadow effect for a multi-feature intelligent liquid surveillance system (ILSS) was developed. Combined with deep learning, the ILSS realizes accurate multi-feature detection of different liquids (99.3%).
Article
Plant Sciences
Pham Hong Phong, Pham Ba Viet Anh, Vu Thi Thu Ha, Le Quoc Hung, Le Minh Thanh
Summary: This study simulated the distribution of nutrients in agricultural soils based on the temporal and spatial variation of soil electrical conductivity, and successfully developed an improved version of the traditional convection-diffusion equation to predict the transport of fertilizers in soil. The simulation results confirmed the accuracy of the model and supported the selection of appropriate fertilizers for soil.
JOURNAL OF SOIL SCIENCE AND PLANT NUTRITION
(2021)
Article
Engineering, Electrical & Electronic
Kehao Feng, Zhenghua Zhang, Guohua Bai, Xiuyuan Fan, Rongzhi Zhao, Xuefeng Zhang
Summary: This paper proposes a new method to accurately evaluate the high-frequency power loss of soft magnetic materials. Through a two-step calibration, the system is able to compensate for the phase angle discrepancy between the exciting current and induced voltage, enabling a higher power loss measurement frequency.
SENSORS AND ACTUATORS A-PHYSICAL
(2024)
Article
Engineering, Electrical & Electronic
Mingfang Kang, Tong Liu, Hongmei Sun, Lin Li, Keliang Wang
Summary: In this study, the absorption performance of ambient nitrogenous toxic gases on a monolayer of blue phosphorus phase germanium selenide (GeSe) was investigated using density-functional theory calculations. The results showed that GeSe monolayer exhibits higher sensitivity and selectivity for the hazardous gas NO.
SENSORS AND ACTUATORS A-PHYSICAL
(2024)
Article
Engineering, Electrical & Electronic
Yaqiong Niu, Zhicheng Zou, Longsheng Cheng, Chaofeng Ye
Summary: This paper proposes a novel method to stabilize the laser diode output using a close-loop control with two feedbacks. The proposed method performs better for long-time operations.
SENSORS AND ACTUATORS A-PHYSICAL
(2024)
Article
Engineering, Electrical & Electronic
Jiajie Li, Ying Liu, Zhen Chai, Qian Cao, Renjie Li, Yueyang Zhai
Summary: This study proposed an efficient and high-quality beam-splitting method based on a diffractive optical element, enabling multichannel SERF atomic magnetometers to achieve ultra-high consistency and sensitivity. It has significant applications in array biomagnetic measurement systems.
SENSORS AND ACTUATORS A-PHYSICAL
(2024)
Article
Engineering, Electrical & Electronic
E. Oliveira, C. Doering, H. Fouckhardt
Summary: With the development of Lab on a chip technology, fluid management using dispersed droplets has become an important approach. Electrowetting on dielectric (EWOD) is one method for droplet actuation, but it requires prior definition of droplet positions. Optoelectrowetting (OEW) goes further by allowing changes in electrical parameters through impinging light spots, without the need for predefined droplet positions. This study re-evaluates the key parameters of OEW and explores their effects on droplet actuation using numerical optimization methods.
SENSORS AND ACTUATORS A-PHYSICAL
(2024)
Article
Engineering, Electrical & Electronic
Haipeng Wang, Zhiguo Wang, Gancheng Zhu, Shuai Zhang
Summary: A novel capacitive proximity skin was developed to improve the performance of robotics in handling liquid-filled containers. This skin features a flexible structure that can adapt to different grippers and seamlessly integrate with Robot Operating System. Experimental results demonstrated that this proximity skin achieved data-lossless detection and contactless measurement of liquid level, making it suitable for grasping operations.
SENSORS AND ACTUATORS A-PHYSICAL
(2024)
Article
Engineering, Electrical & Electronic
Tsenguun Byambadorj, Xiangyu Zhao, Yutao Qin, Yogesh B. Gianchandani
Summary: In this research, a monolithically microfabricated Knudsen pump (KP) without suspended membranes was presented. These pumps offer improved mechanical robustness, wider process window, and simplified microfabrication process compared to previous designs. The experimental results matched the modeling results well, indicating the potential for monolithic integration onto complex lab-on-a-chip systems.
SENSORS AND ACTUATORS A-PHYSICAL
(2024)
Article
Engineering, Electrical & Electronic
Hamed Karami, Saeed Karami Chemeh, Vahid Azizi, Hooman Sharifnasab, Jose Ramos, Mohammed Kamruzzaman
Summary: Aroma is a significant quality trait for pharmaceutical plants and their products, indicating the quality of the raw material. An electronic nose is an efficient approach for identifying and evaluating the aroma of essential oils. In this study, tarragon was dried at different temperatures and air velocities, and the purity of tarragon essential oil was evaluated using an electronic nose. Multivariate data analysis and artificial neural networks modeling were employed to quantify and classify the obtained essential oils.
SENSORS AND ACTUATORS A-PHYSICAL
(2024)
Article
Engineering, Electrical & Electronic
Xiaoyang Duan, Dan Xu, Wenjun Jia, Ran Li, Bohao Sun, Ruitian Yan, Wenjie Zhao
Summary: Flower-like WO3/WS2 heterojunction materials constructed via a low-temperature in-situ oxidation method exhibit significant improvements in the detection of NO2 gas in gas sensors, along with good selectivity and reproducibility.
SENSORS AND ACTUATORS A-PHYSICAL
(2024)
Article
Engineering, Electrical & Electronic
Peng Yu, Mengyang Zhang, Manqi You, Yuxi Gao, Landong Xiao, Yan Peng, Jingxia Lai, Zhouzhao Shi, Siwei Luo, Gencai Guo, Gang Guo
Summary: Recent studies have shown that two-dimensional Janus transition metal dichalcogenides (TMDs) have great potential for applications in gas sensors. By conducting first principles calculations, this study explores the potential application of Pd-doped monolayer HfSeS as gas sensor materials for detecting CO, CO2, NH3, and NO. The results demonstrate the good thermodynamical stability and reversible adsorption of these molecules on both pristine and Pd-doped HfSeS, with Pd-doped HfSeS showing higher sensitivity towards NO due to its metallic behavior upon NO adsorption.
SENSORS AND ACTUATORS A-PHYSICAL
(2024)
Article
Engineering, Electrical & Electronic
Jinlan Yang, Linjiao Li, Jun Huang, Quan Zhang, Hiba Affane
Summary: This study proposes a method for large-scale aggregation of micro-particles by creating a vortex region using low-frequency oscillation. Experimental results show that this method can achieve a large aggregation area and has the advantages of low cost and low power consumption.
SENSORS AND ACTUATORS A-PHYSICAL
(2024)
Article
Engineering, Electrical & Electronic
Jitendra Singh, Saurabh Kumar Gupta, Vinita
Summary: In this investigation, a Surface Acoustic Wave (SAW) formalin gas sensor was explored for low-level formalin gas sensing applications. The sensor showed stable response and high sensitivity to formalin gas concentration, making it a reliable and useful sensor for room temperature operations.
SENSORS AND ACTUATORS A-PHYSICAL
(2024)
Article
Engineering, Electrical & Electronic
Junyao Wang, Yahao Liu, Huan Liu, Qi Hou, Jianxin Xu, Hongxu Pan, Jingran Quan, Yansong Chen, Hanbo Yang, Lixiang Li
Summary: A flexible electrode with a serpentine-shaped tetra-chiral structure was designed to improve the mechanical properties and prevent mechanical fracture of flexible electrodes. The research demonstrated that this structure reduced the maximum tensile stress by 87.19% compared to the existing tetra-chiral structure. The flexible electrode remained conductive even at a strain of 70% and showed resistance values of 5 ohm and 4.4 ohm at a bending angle of 180 degrees and after 1000 fold cycles. Furthermore, the flexible electrodes showed great potential in biological signal monitoring, particularly in collecting ECG and pulse signals.
SENSORS AND ACTUATORS A-PHYSICAL
(2024)
Article
Engineering, Electrical & Electronic
Taihao Chen, Yong Fang, Mengru Zhu, Zhiwei Zhao, Wei Lei, Zhuoya Zhu, Helong Jiang
Summary: Flexible dual-spectral carbon nanodots/flexible n-silicon heterojunction photodetectors with high responsivity and detectivity are reported. These detectors show photo response in UV illumination and only in forward bias under visible illumination. The photocurrent of the device remains high even under bending strain.
SENSORS AND ACTUATORS A-PHYSICAL
(2024)
Article
Engineering, Electrical & Electronic
M. S. Sikandar Bathusha, Israr Ud Din, Rehan Umer, Kamran A. Khan
Summary: Graphene-based nanomaterials are used as embedded sensors to monitor fracture behavior in composite structures. This study investigates the in-situ crack propagation and fracture behavior in a glass fiber reinforced polymer composite using embedded reduced graphene oxide coated fabrics and highly conductive graphene nanoplatelet paper.
SENSORS AND ACTUATORS A-PHYSICAL
(2024)