Article
Engineering, Chemical
S. Reitschuster, E. Maier, T. Lohner, K. Stahl, K. Bobzin, C. Kalscheuer, M. Thiex, P. Sperka, M. Hartl
Summary: The potential of diamond-like carbon (DLC) coatings on thermoplastic polymers for reducing friction and wear in highly stressed rolling-sliding contacts was evaluated. The results showed that DLC coatings could reduce friction on the considered polymers under specific lubrication conditions. In terms of wear behavior, DLC coatings showed potential especially under severe mixed lubrication conditions.
Article
Chemistry, Physical
Waldemar Tuszynski, Remigiusz Michalczewski, Edyta Osuch-Slomka, Andrzej Snarski-Adamski, Marek Kalbarczyk, Andrzej N. Wieczorek, Jakub Nedza
Summary: The study suggests that to reduce abrasion, scuffing, and pitting of gears in extreme mining conveyor conditions, the deposition of W-DLC/CrN coating should be considered, as it also provides good protection when the lubricating oil is contaminated.
Article
Engineering, Electrical & Electronic
Alireza Hassanzadeh, Ali Moulavi, Amir Panahi
Summary: This paper presents a design of an implantable capacitive sensor for evaluating new bone growth with the motivation of reducing medical x-ray imaging dose. The sensor features low energy consumption, stable performance, and wireless data transmission to a reader device via an inductive link. Experimental results show a wide range of capacitance variation in the sensor, enabling better characterization of bone development.
IEEE SENSORS JOURNAL
(2021)
Article
Engineering, Electrical & Electronic
Alla Taranchuk, Sergey Pidchenko
Summary: This article details the design principles of a quartz pulse wave sensor with capacitive control for healthcare solutions, including constructing a model, linearizing calibration, constructing an electrical model, analyzing control characteristics, and presenting practical applications in systems of sphygmography.
IEEE SENSORS JOURNAL
(2021)
Article
Engineering, Environmental
Busuyi O. Adebayo, Jacob Trautman, Qasim Al-Naddaf, Ali A. Rownaghi, Fateme Rezaei
Summary: This study reports the incorporation of mixed-metal oxides (MMOs) into latex paints for permanent trapping of indoor formaldehyde. Si/Zr-latex paints outperformed Si/Ti counterparts under different operating conditions, but performance could decrease over excessive loading.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2021)
Article
Engineering, Electrical & Electronic
Om Prakash Maurya, P. Sumathi
Summary: A digital interfacing circuit based on sliding discrete Fourier transform bins is proposed for lossy capacitive sensors, achieving high accuracy in capacitance and resistance measurement. The circuit implemented in FPGA shows low error rates and is suitable for humidity and capacitance measurements, with potential applications in fields such as capacitive touchpads.
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT
(2021)
Article
Mathematics, Interdisciplinary Applications
Yining Zhou, Zhongkui Sun
Summary: This paper investigates the walking stability of a biped passive robot with the simplest point foot model through adaptive sliding mode control based on Radial Basis Function Neural Network (RBFNN). The simulation results demonstrate that the passive robot with this control method achieves stable periodic gait with fewer steps compared to the robot without control. Moreover, by giving different control target state functions according to the characteristics of passive walking gait, the passive robot can stabilize to corresponding periodic walking state with small control errors under the adaptive sliding mode control based on RBFNN. Finally, the influences of the gain coefficients of weight updating formula of RBFNN and the robustness coefficients of adaptive sliding mode controller on the control error results are discussed.
CHAOS SOLITONS & FRACTALS
(2023)
Article
Chemistry, Analytical
Zhenyi Gao, Bin Zhou, Xiang Li, Lei Yang, Qi Wei, Rong Zhang
Summary: A novel digital-analog hybrid system-on-chip is designed for controlling and processing sensors based on capacitance detection. Utilizing the least mean square error demodulation algorithm, the low-power Cortex-M3 processor supports software implementation of control algorithms, with a maximum operating frequency of 105 MHz.
Article
Chemistry, Physical
Tatyana Kuznetsova, Vasilina Lapitskaya, Anastasiya Khabarava, Ruslan Trukhan, Sergei Chizhik, Elena Torskaya, Alexey Mezrin, Sergei Fedorov, Alexander Rogachev, Bogdan Warcholinski
Summary: This study investigated the properties of DLC-Si coatings, including surface morphology, microhardness, and coefficient of friction. It was found that Si addition led to the formation of nanoscale layers and chains, and the DLC + 0.8 % Si coating exhibited the most hardened layer. The results of microtribotests showed that the specific volumetric wear and thickness of secondary structures in the coating were related to the coefficient of friction.
APPLIED SURFACE SCIENCE
(2023)
Article
Engineering, Electrical & Electronic
Shaheen Ahmad, Nabil Khalid, Rashid Mirzavand
Summary: This study presents an energy-efficient, highly reliable, ultra-high frequency capacitive sensor that can measure soil moisture, air humidity, and liquid levels. The sensor offers high accuracy, low power consumption, and can be implemented in various applications.
IEEE SENSORS JOURNAL
(2022)
Article
Engineering, Electrical & Electronic
Edgar Unigarro Calpa, Homero Fernando Pastrana, Cristian Dimas Caro, Diego Sanz Becerra, Fredy Enrique Segura-Quijano
Summary: Ethanol sanitizers are important in fighting viruses, but the quality and purity of products need to be carefully considered. A passive wireless dual-sensor based on solution permittivity changes has been developed for assessing the quality of specific samples.
IEEE SENSORS JOURNAL
(2021)
Article
Engineering, Mechanical
Bilal Kursuncu
Summary: This study investigates the effect of cryogenic heat treatment on the wear behavior of different coatings, showing that cryogenic heat treatment can enhance wear resistance in some samples.
INDUSTRIAL LUBRICATION AND TRIBOLOGY
(2021)
Article
Automation & Control Systems
Ni Bu, Haoyu Liu, Wenpeng Li
Summary: This article focuses on robust passive tracking control of uncertain soft actuators using the robust right coprime factorization (RRCF) method. Parameter estimation, controller design, and simulation verification were conducted based on experimental data to improve the tracking performance of soft actuators.
INTERNATIONAL JOURNAL OF ROBUST AND NONLINEAR CONTROL
(2021)
Article
Electrochemistry
Artur Litvinov, Nikolay Samotaev, Maya Etrekova, Anastasia Ivanova, Dmitrii Filipchuk
Summary: This article demonstrates a simple method for measuring hydrogen concentrations directly in transformer oil and in the gas space above it using a highly sensitive gas sensor. The results obtained can be used for online monitoring systems and predicting the overall performance of power transformers.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2021)
Article
Engineering, Electrical & Electronic
Hanyu Zhu, Yong Zhou, Xiliang Luo, Haibo Zhou
Summary: This paper investigates the optimization problem of minimizing IVD in VCPS to meet V2I QoS requirements, proposing a two-timescale DRL framework to control the platoon's beamforming and spacing. Research shows that the proposed algorithm can significantly improve traffic capacity, reduce air drag coefficient, while meeting V2I communication QoS requirements.
IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY
(2022)
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)