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International Conference on control, Decision and Information Technologies (CoDIT)

作者： Alessandro Bozzi Jose-Fernando Jimenez Camilo Hernandez-Rodriguez Eliana-Maria Gonzalez-Neira Damien Trentesaux Department of Informatics Bioengineering Robotics and Systems Engineering (DIBRIS) University of Genova Italy Laboratory System and Materials for Mechatronics (SYMME) Université Savoie Mont Blanc Annecy France Industrial Engineering Department Pontificia Universidad Javeriana Bogota Columbia Laboratory of Industrial and Human Automation Control Mechanical Engineering and Computer Science (LAMIH) Université Polytechnique Hauts-de-France Valenciennes France

Smart manufacturing systems combine collaborative and autonomous control systems to provide optimal performance and respond to volatile demands. A key component of smart manufacturing is material management, as raw materials, work-in-progress, and finished products must be transported to the right location at the right time. However, during the production phase, it is imperative to establish an optimal traffic control scheme in order to avoid congestion and optimize material flow. This paper proposes a platooning-based control procedure implemented in a virtual agent-based manufacturing environment to increase the material flow efficiency on a manufacturing shop floor. An analysis of the production makespan and an indicator of the level of congestion in the material handling system was conducted in order to determine productivity improvements. An agent-based simulation is used to test the effectiveness of the novel platooning approach versus a traditional basic approach. A multivariate analysis of variance (MANOVA) reveals that the inclusion of a platoon-based procedure improves production performance and reduces congestion risks.

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Axion optical induction of antiferromagnetic order

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Nature materials 2023年第5期22卷 583-590页

作者： Qiu, Jian-Xiang Tzschaschel, Christian Ahn, Junyeong Gao, Anyuan Li, Houchen Zhang, Xin-Yue Ghosh, Barun Hu, Chaowei Wang, Yu-Xuan Liu, Yu-Fei Bérubé, Damien Dinh, Thao Gong, Zhenhao Lien, Shang-Wei Ho, Sheng-Chin Singh, Bahadur Watanabe, Kenji Taniguchi, Takashi Bell, David C. Lu, Hai-Zhou Bansil, Arun Lin, Hsin Chang, Tay-Rong Zhou, Brian B. Ma, Qiong Vishwanath, Ashvin Ni, Ni Xu, Su-Yang Department of Chemistry and Chemical Biology Harvard University CambridgeMA United States Department of Physics Harvard University CambridgeMA United States Department of Physics Boston College Chestnut HillMA United States Department of Physics Northeastern University BostonMA United States Department of Physics and Astronomy and California NanoSystems Institute University of California Los AngelesCA United States Shenzhen China Shenzhen China Shenzhen Key Laboratory of Quantum Science and Engineering Shenzhen China International Quantum Academy Shenzhen China Department of Physics National Cheng Kung University Tainan Taiwan Tainan Taiwan Physics Division National Center for Theoretical Sciences Taipei Taiwan Department of Condensed Matter Physics and Materials Science Tata Institute of Fundamental Research Mumbai India Research Center for Functional Materials National Institute for Materials Science Tsukuba Japan International Center for Materials Nanoarchitectonics National Institute for Materials Science Tsukuba Japan Harvard John A. Paulson School of Engineering and Applied Sciences Harvard University CambridgeMA United States Center for Nanoscale Systems Harvard University CambridgeMA United States Institute of Physics Academia Sinica Taipei Taiwan Canadian Institute for Advanced Research Toronto Canada

Using circularly polarized light to control quantum matter is a highly intriguing topic in physics, chemistry and biology. Previous studies have demonstrated helicity-dependent optical control of chirality and magnetization, with important implications in asymmetric synthesis in chemistry;homochirality in biomolecules;and ferromagnetic spintronics. We report the surprising observation of helicity-dependent optical control of fully compensated antiferromagnetic order in two-dimensional even-layered MnBi2Te4, a topological axion insulator with neither chirality nor magnetization. To understand this control, we study an antiferromagnetic circular dichroism, which appears only in reflection but is absent in transmission. We show that the optical control and circular dichroism both arise from the optical axion electrodynamics. Our axion induction provides the possibility to optically control a family of PT-symmetric antiferromagnets (P, inversion;T, time-reversal) such as Cr2O3, even-layered CrI3 and possibly the pseudo-gap state in cuprates. In MnBi2Te4, this further opens the door for optical writing of a dissipationless circuit formed by topological edge states. © 2023, The Author(s), under exclusive licence to Springer Nature Limited.

关键词： Dichroism

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Endowing Deep-Red (Dr) Bodipy Luminophors with Enhanced Aggregation-Induced Emission by Installing Miniature Rotor of Trifluoromethyl (Cf3) for Solution-Processed Oleds

SSRN

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SSRN 2022年

作者： Zhao, Guimin Jiang, Wei Dai, Hengyi Zhou, Renyin Zhang, Guanghao Chen, Haowen Ma, Daiyu Tian, Wenwen Ban, Xinxin Sun, Yueming Jiangsu Province Hi-Tech Key Laboratory for Bio-Medical Research Jiangsu Engineering Laboratory of Smart Carbon-Rich Materials and Device School of Chemistry and Chemical Engineering Southeast University Jiangsu Nanjing211189 China Key Lab of Organic Optoelectronics and Molecular Engineering Ministry of Education Department of Chemistry Tsinghua University Beijing100084 China School of Environmental and Chemical Engineering Jiangsu Key Laboratory of Function Control Technology for Advanced Materials Jiangsu Ocean University Jiangsu Lianyungang222005 China

Highly efficient deep-red (DR) organic materials in aggregated state are fundamentally restricted by the serious nonradiative decay rates (knr) due to the energy gap law, and the aggregation induced quenching in view of significant intermolecular interaction. Here, two new BODIPY chromophores owning donor−acceptor−donor (D−A−D) structure, namely CF3-2TPA and 2CF3-2TPA, were designed and synthesized. Trifluoromethyl (CF3)-substituted phenyl group was introduced to the meso-position of the BODIPY core, tuning red to DR emission and suppressing intermolecular interaction with the utilization of the steric hindrance of CF3. Besides, CF3-2TPA and 2CF3-2TPA show enhanced aggregation-induced emission (AIE) characteristic, which was ascribed to the CF3 rotor dissipating the excited-state energy. The OLEDs are fabricated by combining a thermally assisted delayed fluorescence host with a deep-red dye, showing a DR cut-on wavelength of 668 nm and external quantum efficiency of 2.3%. This work provided a rotor strategy to convert BODIPY molecule with obvious AIE property, providing their promising applications in DR-OLEDs. © 2022, The Authors. All rights reserved.

关键词： Chromophores

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Efficient Full-Frequency GW Calculations Using a Lanczos Method

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Physical Review Letters 2024年第12期132卷 126402-126402页

作者： Weiwei Gao Zhao Tang Jijun Zhao James R. Chelikowsky Key Laboratory of Materials Modification by Laser Ion and Electron Beams Ministry of Education Dalian University of Technology Dalian 116024 China Center for Computational Materials Oden Institute for Computational Engineering and Sciences The University of Texas at Austin Austin Texas 78712 USA Key Laboratory of Atomic and Subatomic Structure and Quantum Control (Ministry of Education) Guangdong Basic Research Center of Excellence for Structure and Fundamental Interactions of Matter School of Physics South China Normal University Guangzhou 510006 China Department of Physics The University of Texas at Austin Austin Texas 78712 USA McKetta Department of Chemical Engineering The University of Texas at Austin Austin Texas 78712 USA

The GW approximation is widely used for reliable and accurate modeling of single-particle excitations. It also serves as a starting point for many theoretical methods, such as its use in the Bethe-Salpeter equation (BSE) and dynamical mean-field theory. However, full-frequency GW calculations for large systems with hundreds of atoms remain computationally challenging, even after years of efforts to reduce the prefactor and improve scaling. We propose a method that reformulates the correlation part of the GW self-energy as a resolvent of a Hermitian matrix, which can be efficiently and accurately computed using the standard Lanczos method. This method enables full-frequency GW calculations of material systems with a few hundred atoms on a single computing workstation. We further demonstrate the efficiency of the method by calculating the defect-state energies of silicon quantum dots with diameters up to 4 nm and nearly 2,000 silicon atoms using only 20 computational nodes.

关键词： Electronic structure Clusters Molecules Approximation methods for many-body systems Density functional theory GW method materials modeling

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Combined antibacterial effect of Origanum compactum and Mentha piperita (Lamiaceae) essential oils against ATCC Escherichia coli and Staphylococcus aureus

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Vegetos 2022年第1期35卷 74-82页

作者： El amrani, Soukaina Sanae, Lairini Ez zoubi, Yassine Evrendilek, Gulsun Akdemir Mouhcine, Fadil Hicham, Kass Rabia, Bouslamti Abdelhakim, El Ouali Lalami Materials Processes Catalysis and Environment Laboratory Higher School of Technology of Fez Sidi Mohamed Ben Abdellah University Imouzzer Road Fez 30000 Morocco Biotechnology Environmental Technology and Valorization of Bio-Resources Team Department of Biology Faculty of Sciences and Technologies Al-Hoceima Abdelmalek Essaadi University Tetouan Morocco Department of Food Engineering Faculty of Engineering Bolu Abant Izzet Baysal University Bolu Turkey Physico-chemical laboratory of inorganic and organic materials Materials Science Center (MSC) Ecole Normale Supérieure Mohammed V University in rabat Rabat Morocco Higher Institute of Nursing Professions and Health Techniques of Fez Regional Direction of Health El Ghassani Hospital- Dhar El Mehraz Fez 30000 Morocco

With the increasing concerns about the safety of chemical synthetic substances being added to food products, companies are beginning to search for natural sources of antimicrobials. Because essential oils were proven to have antimicrobial properties, they can be used as food preservatives. The mixture of essential oils may have a more potent antimicrobial profile compared to any single essential oil. Hence, the purpose of this work was to determine the chemical composition and inhibitory effects of Origanum compactum L. and Mentha piperita L. (Lamiaceae) essential oils alone or in combination against Staphylococcus aureus ATCC 29,213 and Escherichia coli ATCC 25,922. It is the first time reporting a combination of these two essential oils to control foodborne pathogens type Escherichia coli and Staphylococcus aureus. The major constituents of O. compactum essential oil were determined as carvacrol, thymol, p-cymene, and α-terpinene. Regarding M. piperita essential oil, menthofuran, menthol, methyl acetate, 1,8 cineole, and β-pinene were the major compounds. The mixture of essential oils presented a strong synergistic effect against E. coli, decreasing the minimum inhibitory concentration (MIC) of O. compactum from 0.0625% to 0.015625% (v/v) and the MIC of M. piperita from 1% to 0.125% (v/v). It was concluded that a mixture of essential oils provides a better antimicrobial effect against tested bacteria than that of the essential oils alone. © 2021, Society for Plant Research.

关键词： Antimicrobial activity Essential oil Mentha piperita L Origanum compactum L Synergistic effect

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Editorial: Characterization and application of magneto-sensitive soft materials

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Frontiers in materials 2023年 10卷

作者： Zhang, Zhili Li, Decai Yu, Miao Niu, Xiaodong Li, Weihua Institute of Magnetic Fluids School of Mechanical Electronic and Control Engineering Beijing Jiaotong University Beijing China State Key Laboratory of Tribology Tsinghua University Beijing China Key Laboratory for Optoelectronic Technology and Systems Ministry of Education College of Optoelectronic Engineering Chongqing University Chongqing China Department of Mechanical Engineering College of Engineering Shantou University Shantou China School of Mechanical Materials Mechatronic and Biomedical Engineering University of Wollongong WollongongNSW Australia

Magnetic fluids are nanocolloids made up of nanometer-sized ferromagnetic particles dispersing in a carrier liquid (typically comprises three parts: base carrier liquid, surfactant, and ferromagnetic particles). Since the particles are easier to agglomerate, ferromagnetic particles are typically coated with surfactants to prevent agglomeration. Magnetic nanoparticles are uniformly disseminated in the carrier liquid with the assistance of surfactants, which play a crucial role in the magnetic fluid composition. Li et al. systematically studied the coating state and colloidal stability of oleic acid (OA) and 3-(N,N-Dimethylmyristylammonio) propanesulfonate (DP) coated magnetite nanoparticles in the polar and apolar carrier liquid. The total Gibbs interfacial energy was analyzed based on Van Oss-Chaudhry-Good and DLVO theory to describe the behaviors of coated particles in solvents. Zang et al. studied the effect of different fatty acids as surfactants on the rheological properties of magnetic fluids. The results showed that the mixed fatty acids showed greater viscosity growth and a greater slope of the viscosity growth curve than the magnetic fluids dispersed with a single acid. This indicates that the mixed fatty acids have more stable rheological properties. The viscousity-temperature performance of kerosene-base magnetic fluids at low temperatures can be improved by adjusting the ratio of mixed fatty acids. The most typical application of magnetic liquids is sealing, which has the outstanding advantages of zero leakage, long life and low resistance. Magnetic fluid seals as a class of non-contact sealing technology have been a research focus. In order to solve the problem of the pole shoes in the ferrofluid seal are easily damaged under the situation of the large radial beating of the main shaft. Liu et al. proposed a new structure of the ferrofluid seal that use a redial-changed ring magnet as the magnetic source. Considering that the ring magnets have problems o

关键词： magnetic fluids (MF) magnetorheological fluids (MRF) magneto-sensitive soft materials non-contact sealing torsional vibration damper intelligent material energy absorber

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Elastic wave dispersion in layered media with suture joints: influence of structural hierarchy and viscoelasticity

arXiv

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arXiv 2023年

作者： Ongaro, Federica Bosia, Federico Pugno, Nicola M. Department of Civil Environmental and Mechanical Engineering Laboratory for Bio-inspired Bionic Nano Meta Materials and Mechanics University of Trento Italy Department of Weapon Systems and Ballistics Royal Military Academy 30 Avenue de la Renaissance Brussels1000 Belgium Department of Applied Science and Technology Politecnico di Torino TO Torino Italy School of Engineering and Materials Science Queen Mary University of London United Kingdom

Suture joints contribute to the exceptional combination of stiffness, strength, toughness and efficient load bearing and transmission of many biological structures like the cranium or ammonite fossil shells. However, their role in the attenuation of vibrations and effect on dynamic loads is less clear. Moreover, the self-similar hierarchical geometry often associated with suture joints renders its treatment with standard numerical approaches computationally prohibitive. To address this problem, this paper investigates the dynamic response of periodic layered media with suture joints using an analytical approach based on material homogenization. A general trapezoidal suture geometry is considered together with the fundamental ingredients of hierarchy and viscoelasticity. The Spectral Element Method and Bloch theorem are used to derive the dispersion relation and band diagram of the system, including propagating and evanescent dispersion modes. A strong influence of the suture morphology and material properties emerges, and the analysis reveals an important advantage of adding hierarchy, i.e. the possibility of simultaneously obtaining wider bandgaps and their shift to higher frequencies. A synergy between hierarchy and structure is also observed, providing superior levels of wave attenuation. These findings suggest a possible design concept for bioinspired devices with efficient and tailorable wave attenuation properties. © 2023, CC BY-NC-ND.

关键词： Energy gap

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Applications of nanogenerators for biomedical engineering and healthcare systems

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InfoMat 2022年第2期4卷 53-109页

作者： Wanli Wang Jinbo Pang Jie Su Fujiang Li Qiang Li Xiaoxiong Wang Jingang Wang Bergoi Ibarlucea Xiaoyan Liu Yufen Li Weijia Zhou Kai Wang Qingfang Han Lei Liu Ruohan Zang Mark HRümmeli Yang Li Hong Liu Han Hu Gianaurelio Cuniberti College of Electrical Engineering Qingdao UniversityQingdaoChina Collaborative Innovation Center of Technology and Equipment for Biological Diagnosis and Therapy in Universities of Shandong Institute for Advanced Interdisciplinary Research(iAIR)University of JinanJinanChina College of Electronic Information Qingdao UniversityQingdaoChina Department of Pediatric Surgery The Affiliated Hospital of Qingdao UniversityQingdaoChina College of Physics Qingdao UniversityQingdaoChina Institute for Materials Science and Max Bergmann Center of Biomaterials Technische Universität DresdenDresdenGermany Center for Advancing Electronics Dresden Technische Universität DresdenDresdenGermany College of Biological Science and Technology University of JinanJinanChina School of Chemistry and Chemical Engineering University of JinanShandongJinanChina College of Energy Soochow Institute for Energy and Materials InnovationsSoochow UniversitySuzhouChina Key Laboratory of Advanced Carbon Materials and Wearable Energy Technologies of Jiangsu Province Soochow UniversitySuzhouChina Centre of Polymer and Carbon Materials Polish Academy of SciencesZabrzePoland Institute for Complex Materials IFW DresdenDresdenGermany Institute of Environmental Technology VŠB-Technical University of OstravaOstravaCzech Republic School of Information Science and Engineering University of JinanJinanChina Shandong Provincial Key Laboratory of Network Based Intelligent Computing University of JinanJinanChina State Key Laboratory of Crystal Materials Center of Bio&Micro/Nano Functional MaterialsShandong UniversityJinanChina College of Chemical Engineering China University of Petroleum(East China)QingdaoChina Dresden Center for Computational Materials Science Technische Universität DresdenDresdenGermany The Dresden Center for Intelligent Materials(DCIM) Technische Universität DresdenDresdenGermany

The dream of human beings for long living has stimulated the rapid development of biomedical and healthcare ***,conventional biomedical and healthcare devices have shortcomings such as short service life,large equipment size,and high potential safety ***,the power supply for conventional implantable device remains predominantly *** emerging nanogenerators,which harvest micro/nanomechanical energy and thermal energy from human beings and convert into electrical energy,provide an ideal solution for self-powering of biomedical *** combination of nanogenerators and biomedicine has been accelerating the development of self-powered biomedical *** article first introduces the operating principle of nanogenerators and then reviews the progress of nanogenerators in biomedical applications,including power supply,smart sensing,and effective ***,the microbial disinfection and biodegradation performances of nanogenerators have been ***,the protection devices have been discussed such as face mask with air filtering function together with real-time monitoring of human health from the respiration and heat ***,the nanogenerator devices have been categorized by the types of mechanical energy from human beings,such as the body movement,tissue and organ activities,energy from chemical reactions,and gravitational potential ***,the challenges and future opportunities in the applications of nanogenerators are delivered in the conclusive remarks.

关键词： biomedical engineering healthcare implantable devices nanogenerators self-powered devices sensors

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Inductive and Incremental controller Performance Monitoring Under Time-varying Setpoints in the Industrial IoT

Inductive and Incremental Controller Performance Monitoring ...

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第32届中国过程控制会议(CPCC2021)

作者： Jie Wang Chunhui Zhao Biao Huang Youxian Sun State Key Laboratory of Industrial Control Technology College of Control Science and EngineeringZhejiang University Department of Chemical and Materials Engineering University of Alberta

controller performance monitoring(CPM) attracts growing attention since massive control loops are distributed at the thing side of the Internet of Things(IoT).In industrial control loops,changes in operating conditions and the interaction of variables are common,which leads to deviations in setpoints,temporal characteristics,and relationships between variables,although the controller performance may remain the ***,CPM problems in the IoT systems suffer from challenges posed by varying setpoints and complex variable *** this paper,a novel machine-learning based scheme is proposed to tackle the CPM problem under the varying SP for industrial IoT ***,a directed graph network conforming to the control flow chart is designed to explore the information interaction mechanism among variables and generate useful node features under varying *** on the updated node features,a temporal analysis module is constructed to capture the temporal dynamics of closed-loop data via gated recurrent units,revealing the underlying controller ***,the proposed model is endowed with inductive and incremental learning,which improves the generalization capacity and practicality.A real-world example verifies the feasibility of the proposed method.

关键词： controller performance monitoring Internet of Things Incremental learning Inductive learning Industry 4.0

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Sliding Mode control for a DC-DC Buck Converter Feeding a Constant Power Load: A Practical Implementation

Sliding Mode Control for a DC-DC Buck Converter Feeding a Co...

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Advanced Technology in Electronic and Electrical engineering (ICATEEE), International Conference of

作者： Khalil Louassaa Aissa Chouder Mahdi Boukerdja Abdelhafid Cherifi Ali Aillane Electrical Engineering Department Electrical Engineering Laboratory University of M’sila M’sila Algeria Materials and Electronic Systems Laboratory University of Bordj Bou Arreridj Bordj Bou Arreridj Algeria Laboratory of Sciences and Techniques of Automatic Control and Computer Engineering (LabSTA) National School of Engineering of Sfax (ENIS) University of Sfax Sfax Tunisia

DC microgrids have gained in popularity in recent years due to features such as greater reliability, high efficiency, and control simplicity. Constant power loads (CPLs), on the other hand, are a problem and an effective cause of instability in DC MGs. To address the aforementioned issue, this paper discusses the stabilization of a buck power converter that supplies CPL via a regulated boost power converter. A robust sliding mode control is proposed, which stabilizes the output voltage and ensures the CPL's required power. The system is investigated in the context of external perturbations such as fluctuating input voltage and sudden change in the CPL. The robustness and efficacy of the proposed method have been demonstrated to confirm the system's overall stability. Simulation and experimentation are employed to verify the provided controller. The results verify the suggested controller's superiority.

关键词： Damping Voltage measurement Perturbation methods Microgrids Stability analysis Robustness Steady-state

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