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Mn-based MXene with high lithium-ion storage capacity

Nano Research 2024年第5期17卷 4181-4191页

作者： Yanyan Wu Dongqing Liu Xiaonan Wang Usman Ghani Muhammad Asim Mushtaq Jinfeng Yang Huarui Sun Panagiotis Tsiakaras Xingke Cai School of Science and Ministry of Industry and Information Technology Key Laboratory of Micro-Nano Optoelectronic Information System Harbin Institute of Technology ShenzhenShenzhen 5180552 China Collaborative Innovation Center of Extreme Optics Shanxi UniversityTaiyuan 030006China Institute for Advanced Study Shenzhen UniversityShenzhen 518060China College of Mechatronics and Control Engineering Shenzhen UniversityShenzhen 518060China Laboratory of Alternative Energy Conversion Systems Department of Mechanical EngineeringSchool of EngineeringUniversity of ThessalyPedion Areos 38834Greece

3d-transition metal(Fe,Co,Ni,and Mn)-based MXene materials have been predicted to demonstrate exceptional electrochemical performance because of their good electrical conductivity and the presence of metallic atoms with multiple charge ***,until now,there have been no reports on MXenes based on Fe,Co,Ni,and Mn,due to the lack of 3d-metal-layered ***,we successfully synthesized the first 3d-transition metal-based MXenes,Mn_(2)CT_(x) by exfoliating a layered precursor derived from the anti-perovskite bulk *** as-prepared Mn_(2)CT_(x) MXene nanosheets were employed as anode materials in lithium-ion batteries,which exhibited stable storage capacity of 764.7 mAh·g^(-1) at 0.5 C,placing its storage capacities at an upper-middle level compared with other reported MXene materials as well as other Mn-based anode ***,this study opens a new avenue for MXene research by synthesizing 3d-transition metal-based MXenes for electrochemical applications.

关键词： Mn_(3)GaC Mn_(2)CT_(x) MXenes lithium-ion battery anode materials negative fading capacity

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Total Quality Management Implementation in the Mobile Network Operations Centre: A Systematic Literature Review

Total Quality Management Implementation in the Mobile Networ...

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2024 International Conference on Science, engineering and Business for Driving Sustainable Development Goals, SEB4SDG 2024

作者： Mogase, Keabetswe Daniyan, Ilesanmi Felix, Ale Mpofu, Khumbulani Tshwane University of Technolology Department of Industrial Engineering Pretoria South Africa Achievers University Department of Mechanical & Mechatronics Engineering Owo Nigeria National Space Researcj & Development Agency Engineering & Space Systems Abuja Nigeria Tshwane University of Technology Department of Industrial Engineering Pretoria South Africa

ISBN: (纸本)9798350358155

The implementation of Total Quality Management (TQM) can enhance the operational efficiency of the telecommunication industry including the mobile network operational centres (NOC). This study employs a systematic literature review (SLR) to probe the impact of TQM on telecommunications and network operations centres (NOC) in order to establish facts and reach new conclusions. Literature is reviewed using keywords and relevant articles are selected based on the inclusion and exclusion criteria and a total of 50 articles were reviewed after the implementation of the inclusion and exclusion criteria. Thereafter, a TQM framework is developed for the NOC department, focusing on fault management of 5G transmission faults. This helps gain insights into TQM in a telecommunication NOC. It reveals what TQM tools, principles and methods that can be incorporated in the NOC for fault management of 5G transmission faults. © 2024 IEEE.

关键词： 5G mobile communication systems

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Real-time monitoring of fast gas dynamics with a single-molecule resolution by frequency-comb-referenced plasmonic phase spectroscopy

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PhotoniX 2024年第1期5卷 357-372页

作者： Duy-Anh Nguyen Dae Hee Kim Geon Ho Lee San Kim Dong-Chel Shin Jongkyoon Park Hak-Jong Choi Seung-Woo Kim Seungchul Kim Young-Jin Kim Department of Mechanical Engineering Korea Advanced Institute of Science and Technology(KAIST)Science TownDaejeon 34141South Korea Department of Mechatronic Engineering Faculty of Mechanical EngineeringHo Chi Minh City University of Technology(HCMUT)Vietnam National UniversityHo Chi Minh CityVietnam Department of Cogno-Mechatronics Engineering College of Nanoscience and NanotechnologyPusan National UniversityBusan 46241South Korea Department of Optics and Mechatronics Engineering College of Nanoscience and NanotechnologyPusan National UniversityBusan 46241South Korea School of Mechanical and Aerospace Engineering Nanyang Technological University(NTU)50 Nanyang AvenueSingapore 639798Singapore Institute of Machinery and Materials Nano-Convergence Mechanical Systems Research DivisionKorea156Gajeongbuk-RoYuseong-GuDaejeon 34103South Korea

Surface plasmon resonance(SPR)sensors are based on photon-excited surface charge density oscillations confined at metal-dielectric interfaces,which makes them highly sensitive to biological or chemical molecular bindings to functional metallic *** nanostructures further concentrate surface plasmons into a smaller area than the diffraction limit,thus strengthening photon-sample ***,plasmonic sensors based on intensity detection provide limited resolution with long acquisition time owing to their high vulnerability to environmental and instrumental ***,we demonstrate fast and precise detection of noble gas dynamics at single molecular resolution via frequency-comb-referenced plasmonic phase *** photon-sample interaction was enhanced by a factor of 3,852 than the physical sample thickness owing to plasmon resonance and thermophoresis-assisted optical confinement *** utilizing a sharp plasmonic phase slope and a high heterodyne information carrier,a small atomic-density modulation was clearly resolved at 5 Hz with a resolution of 0.06 Ar atoms per nano-hole(in 10^(11)RIU)in Allan deviation at 0.2 s;a faster motion up to 200 Hz was clearly *** fast and precise sensing technique can enable the in-depth analysis of fast fluid dynamics with the utmost resolution for a better understanding of biomedical,chemical,and physical events and interactions.

关键词： Frequency comb Nanohole array Single molecule detection Refractive index High resolution High speed Traceability to time standard

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Disaster Area Recognition from Aerial Images with Complex-Shape Class Detection

Disaster Area Recognition from Aerial Images with Complex-Sh...

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IEEE International Workshop on Safety, Security, and Rescue Robotics (SSRR)

作者： Rubén González-Navarro Dahui Lin-Yang Ricardo Vázquez-Martín Alfonso Garcia-Cerezo Robotics and Mechatronics Group Institute of Mechatronics Engineering and Cyber-physical Systems University of Malaga Spain

This paper presents a convolutional neural network (CNN) model for event detection from Unmanned Aerial Vehicles (UAV) in disaster environments. The model leverages the YOLOv5 network, specifically adapted for aerial images and optimized for detecting Search and Rescue (SAR) related classes for disaster area recognition. These SAR-related classes are person, vehicle, debris, fire, smoke, and flooded areas. Among these, the latter four classes lead to unique challenges due to their lack of discernible edges and/or shapes in aerial imagery, making their accurate detection and performance evaluation metrics particularly intricate. The methodology for the model training involves the adaptation of the pre-trained model for aerial images and its subsequent optimization for SAR scenarios. These stages have been conducted using public datasets, with the required image labeling in the case of SAR-related classes. An analysis of the obtained results demonstrates the model's performance while discussing the intricacies related to complex-shape classes. The model and the SAR datasets are publicly available.

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Transmission Line Age Determination with Statistical Health Index and Failure Probability Curve Fitting Technique 10

Transmission Line Age Determination with Statistical Health ...

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10th International Conference on Condition Monitoring and Diagnosis, CMD 2024

作者： Suwanasri, Cattareeya Yongyee, Ittiphong Suwanasri, Thanapong King Mongkut's University of Technology North Bangkok Faculty of Engineering Department of Electrical and Computer Engineering Bangkok Thailand Rajamangala University of Technology Suvarnabhumi Faculty of Engineering and Architecture Department of Mechatronics Engineering Nonthaburi Thailand King Mongkut's University of Technology North Bangkok Electrical and Software Systems Engineering Bangkok Thailand

ISBN: (纸本)9788986510225

The deterioration of transmission lines has a profound effect on the reliability and safety of the power grid. Accurate estimation of their age is critical for effective maintenance and investment planning. This paper proposes a method that combines the percentage statistical health index (%SHI) with failure probability curve-fitting (FPCF) to estimate the ages of overhead transmission lines. %SHI assesses equipment condition through scoring and weighting, while FPCF correlates SHI with the probability of failure. Evaluation of 924 towers situated in various terrains across Thailand reveals discrepancies between estimated and actual ages, influenced by environmental factors. To enhance reliability, proactive maintenance strategies such as regular inspections and advanced monitoring are recommended. © 2024 The Korean Institute of Electrical Engineers (KIEE).

关键词： Power transmission lines

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Sustainable IoT-Based Data Logger System for Marine Applications Using Renewable Energy 8

Sustainable IoT-Based Data Logger System for Marine Applicat...

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8th IEEE International Conference on engineering Technologies and Applied Sciences, ICETAS 2023

作者： Faizabadi, Ahmed Rimaz Adnan, Khandakar Ameem Norazaruddin, Muhammad Aiman Mohd Zaki, Hasan Firdaus Haziq Bin Abang Akral, Abang Mohd Mohammed Shweesh, Osamah Ebrahim Kulliyyah of Engineering International Islamic University Malaysia Department of Mechatronics Engineering Kuala Lumpur Malaysia Kulliyyah of Information and Communication Technology International Islamic University Malaysia Department of Computer Science Malaysia Kulliyyah of Engineering International Islamic University Malaysia Department of Mechatronics Engineering Malaysia Hidrokinetik Technologies Sdn Bhd Autonomous Marine Systems Kuala Lumpur Malaysia

ISBN: (纸本)9798350327090

Navigational data is vital for various fields of applications. Satellite communications are costly while Automatic Identification System (AIS) data has considerable interval which can make crucial incidents during the voyage unrecoverable. The storage attached to the existing loggers are limited and the GSM900 communication link is slow. This paper presents the design and implementation of an Internet of Things (IoT) based data logging system tailored for marine applications that improves cost, power consumption and durability while providing efficient and reliable data logging capabilities in the harsh marine environment. A programmable multithreaded low-power UR32 industrial router from Milesight replaces the simple Microcontroller Unit (MCU), providing a dual-SIM 4G connectivity failsafe. The proposed design minimizes the required components and enables seamless data acquisition and remote monitoring. Using photovoltaic (PV) solar panels, our logger can run entirely on renewable energy giving an endurance of almost 24 hours on a single charge. It can log data from various sensors over serial communication ports with uninterrupted log intervals. The communication link is improved from 2kbps to more than 7 mbps while storage is improved by 32 times. The complete system is packaged into an IP68 rating enclosure. The proposed solution contributes to cost-effective and energy-efficient IoT-based data logging systems for marine applications, enabling better understanding and managing marine resources and ecosystems using renewable energy. © 2023 IEEE.

关键词： Internet of things

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An Autonomous Quadrotor Exploration Combining Frontier and Sampling for Environments with Narrow Entrances 41

An Autonomous Quadrotor Exploration Combining Frontier and S...

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第41届中国控制会议

作者： Pudong Liu Bo Zhang College of Mechatronics and Control Engineering Shenzhen University Shenzhen City Joint Laboratory of Autonomous Unmanned Systems and Intelligent Manipulation Shenzhen University

ISBN: (数字)9789887581536

ISBN: (纸本)9781665482561

An autonomous quadrotor exploration method based on frontier and motion primitives sampling is presented for exploring spatial structural environments with multiple narrow entrances,which is a rigorous challenge for traditional RRT *** exploration planning framework includes exploration target selection and autonomous *** local region exploration is implemented by expanding the motion primitives sampling in the exploration target selection,while the global exploration is completed by searching the frontier *** local exploration(LE),the motion primitives are expanded according to the quadrotor state,and the best primitive viewpoint is selected by calculating the score of the motion *** global exploration(GE) process,the best global frontier viewpoint is selected,and the key path points are determined in a global undirected *** exploring target point is selected,the autonomous navigation module generates a safe,smooth,and dynamically feasible trajectory and enables the quadrotor follow *** effectiveness and practicality of the exploration framework is validated through experimental simulations,and compared with other existing methods.

关键词： Exploration Motion Primitives Frontiers Path Planning Trajectory Optimization

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Design and Analysis of the Characteristics of a Brushless Permanent Magnet Motor for Critical Drive 36

Design and Analysis of the Characteristics of a Brushless Pe...

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36th International Conference on Electrical Drives and Power Electronics, EDPE 2023

作者： Korkosz, Mariusz Krzywdzinska-Kornak, Krystyna Parfianowicz, Kamil Prokop, Jan Shchur, Ihor Rzeszow University of Technology Faculty of Electrical and Computer Engineering Rzeszow Poland Lviv Polytechnic National University Department of Electric Mechatronics and Computerized Electromechanical Systems Lviv Ukraine

ISBN: (纸本)9798350322750

The paper concerns the analyzis of the characteristics of a brushless permanent magnet motor for critical drive. To increase the level of redundancy, a multichannel power supply is provided for the analyzed motor. At the motor design stage, a provision was made for dual-channel or single-channel operation with balanced magnetic pull, or quadchannel, triple-channel, dual-channel, and single-channel operation with the possibility of unbalanced magnetic pull appearing. The results of numerical tests of the analyzed structure are included. Selected tests were carried out under laboratory conditions to verify the design assumptions. The prototype design was shown to tolerate single-channel operation with balanced magnetic pull, enabling continuous operation. In the case of single-channel operation with unbalanced magnetic pull, it is only possible to operate within a limited time range while maintaining the required output power. © 2023 IEEE.

关键词： Permanent magnets

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Tool-frame-based Admittance Control Strategies with Application to Nasal Swab Robots

Tool-frame-based Admittance Control Strategies with Applicat...

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2023 International Automatic Control Conference, CACS 2023

作者： Hsiao, Tesheng Li, Yi-Jing Jhang, Sin-Yin Hsu, Sheng-Chieh National Yang Ming Chiao Tung University Institute of Electrical and Control Engineering Taiwan Industrial Technology Research Institute Mechanical and Mechatronics Systems Research Laboratories Taiwan

ISBN: (纸本)9798350306354

Nasal swab was intensively performed by medical workers during the COVID-19 pandemic, which unfortunately increases their infection risks. To solve this problem, this study aims to developing a robot to perform nasal swab automatically. An admittance control strategy based on the tangent-normal-binormal (TNB) frame is proposed to on-line adjust the path of the robot according to the external force/moment feedback, and confine the contact force within a pre-specified bound. Therefore, safety and comfort of nasal swab are enhanced. Experiments are conducted on a curved passage and a dummy. Quantitative performance indices are defined to evaluate the effects of the control parameters. The results show that the robot can automatically adjust its path to pass the swab through the curved passage while restrict the contact force within the pre-specified bound, despite inappropriate initial poses. Besides, experiments on the dummy show promising results for practical applications of the proposed nasal swab robot. © 2023 IEEE.

关键词： Compliance control

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Modeling of Fatigue Mechanism and Reliability Analysis of Nose Landing Gear under Impact Loading 9

Modeling of Fatigue Mechanism and Reliability Analysis of No...

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9th International Conference on Fluid Power and mechatronics, FPM 2023

作者： Dong, Yuemei Chen, Chen Shi, Jian School of Automation Science and Electrical Engineering Beihang University Beijing China Shen Yang Aircraft Design and Research Institute AVIC Department of Mechatronics Systems Shenyang China

ISBN: (纸本)9798350304947

When the aircraft lands, the nose landing gear is subjected to impact loading, which can cause fatigue damage and affect its reliability. In this paper, finite element method and fatigue life prediction techniques are used to analyze the fatigue mechanism and reliability of the nose landing gear. Firstly, the dynamic and kinematic models of the key components of the retractable mechanism of the nose landing gear were established. Finite element analysis was carried out using ANSYS to obtain the stress-strain distribution of the mechanism through numerical simulation. Subsequently, on the basis of the stress-strength interference model, the probabilistic method was adopted to establish an accumulated damage-antifatigue damage strength-time dynamic interference model for multiple cyclic stresses. Finally, through analysis of multi-level variable load experimental test data, the fatigue life and reliability assessment of the nose landing gear were obtained. The results indicate that the fatigue life and reliability of the landing gear are severely affected by variable load impact, and this research has practical significance for improving the reliability of aircraft and accident prevention. © 2023 IEEE.

关键词： Finite element method

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