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A novel Ag/ZnO core-shell structure for efficient sterilization synergizing antibiotics and subsequently removing residuals

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Green Energy & Environment 2024年第2期9卷 366-377页

作者： Wenmei Han Wenli Wang Jie Fan Runping Jia Xuchun Yang Tong Wu Qingsheng Wu School of Chemical Science and Engineering Shanghai Key Laboratory of Chemical Assessment and SustainabilityInstitute of Advanced StudyTongji UniversityShanghai200092China College of Textile and Clothing Engineering China National Textile and Apparel Council Key Laboratory of Natural DyesSoochow UniversitySuzhou215123China Department of Urology Shanghai First People’s HospitalSchool of MedicineShanghai Jiaotong UniversityShanghai200080China School of Materials Science and Engineering Shanghai Institute of TechnologyShanghai201418China

The massive use of antibiotics has led to the aggravation of bacterial resistance and also brought environmental pollution *** poses a great threat to human *** the dosage of antibiotics is reduced by increasing its bactericidal performance,the emergence of drug resistance is certainly delayed,so that there's not enough time for developing drug resistance during ***,we selected typical representative materials of metal Ag and semiconductor ZnO nano-bactericides to design and synthesize Ag/ZnO hollow core-shell structures(AZ for short).Antibiotics are grafted on the surface of AZ through rational modification to form a composite sterilization *** research results show that the antibacterial efficiency of the composite system is significantly increased,from the sum(34.7%+22.8%-57.5%)of the antibacterial efficiency of AZ and gentamicin to 80.2%,net synergizes 22.7%,which fully reflects the effect of 1+1>***,the dosage of antibiotics can be drastically reduced in this way,which makes both the possibility of bacterial resistance and medical expenses remarkably ***,residual antibiotics can be degraded under simple illumination using AZ-self as a photocatalyst,which cuts off the path of environmental *** short,such an innovative route has guiding significance for drug resistance.

关键词： Ag/ZnO hollow Core-shell structures Antibiotics Gentamycin Synergistic sterilization Photodegradation

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Influence of Multi-Parameter Variation on Wireless Power Transfer System Based on Double-sided LCC Compensation Network 10

Influence of Multi-Parameter Variation on Wireless Power Tra...

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10th IEEE International Power Electronics and Motion control Conference, IPEMC 2024 ECCE Asia

作者： Wang, Zhenghao Gao, Fei Liu, Xin Niu, Huanjun Shanghai Jiao Tong University Key Laboratory of Control of Power Transmission and Conversion Ministry of Education and the Department of Electrical Engineering Shanghai200240 China University of Electronic Science and Technology of China Shenzhen Institute for Advanced Study Shenzhen518110 China

ISBN: (纸本)9798350351330

Compensation network is an important part of the wireless power transfer (WPT) system, which compensates for the reactive power of the loosely coupled coils. However, many environmental factors can result in small changes to the compensation parameters of the WPT system, decreasing the transferred power and efficiency. To analyze the influence of parameter variation on transferred power and efficiency, a mathematical model of parameter variations on a double-sided LCC-compensated WPT system is established. A 1-kW IPT prototype is built and corresponding simulation and experimental verifications are conducted to verify the theoretical analysis. © 2024 IEEE.

关键词： Energy transfer

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Recent progress in self-healable energy harvesting and storage devices - a future direction for reliable and safe electronics

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Materials Horizons 2024年第6期11卷 1395-1413页

作者： Chandrasekar, Jayashree Venkatesan, Manikandan Sun, Ting-Wang Hsu, Yung-Chi Huang, Yu-Hang Chen, Wei-Wen Chen, Mei-Hsin Tsai, Meng-Lin Chen, Jung-Yao Lin, Ja-Hon Zhou, Ye Kuo, Chi-Ching Department of Molecular Science and Engineering Institute of Organic and Polymeric Materials National Taipei University of Technology Taipei10608 Taiwan Advanced Research Center for Green Materials Science and Technology National Taiwan University Taipei10617 Taiwan Department of Electro-Optical Engineering National Taipei University of Technology Taipei106 Taiwan Department of Materials Science and Engineering National Taiwan University of Science and Technology Taipei106 Taiwan Department of Photonics National Cheng Kung University Tainan701 Taiwan Institute for Advanced Study Shenzhen University Shenzhen518060 China

Electronic devices with multiple features bring in comfort to the way we live. However, repeated use causes physical as well as chemical degradation reducing their lifetime. The self-healing ability is the most crucial property of natural systems for survival in unexpected situations and variable environments. However, this self-repair property is not possessed by the conventional electronic devices designed today. To expand their lifetime and make them reliable by restoring their mechanical, functional, and electrical properties, self-healing materials are a great go-to option to create robust devices. In this review the intriguing self-healing polymers and fascinating mechanism of self-healable energy harvesting devices such as triboelectric nanogenerators (TENG) and storage devices like supercapacitors and batteries from the aspect of electrodes and electrolytes in the past five years are reviewed. The current challenges, strategies, and perspectives for a smart and sustainable future are also discussed. © 2024 The Royal Society of Chemistry.

关键词： Energy harvesting

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Nanostructured steels for advanced structural applications

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Materials Futures 2022年第1期1卷 97-100页

作者： H J Kong T Yang T L Zhang B X Cao C T Liu Department of Mechanical Engineering Department of Material Science and EngineeringHong Kong Institute for Advanced StudyCity University of Hong KongHong KongPeople’s Republic of China

This vision summarizes the recent advancement of nanostructured steels foradvanced structural applications, foresees possible challenges and pinpoints futuredirections as well as opportunities in this new era of indus... 详细信息

关键词： nanostructured steels extreme environments advanced manufacturing shape memory

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Constant Voltage Charging of IPT System under Various Coupling Coefficients and Load Conditions Based on Switched-controlled Capacitor 10

Constant Voltage Charging of IPT System under Various Coupli...

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10th IEEE International Power Electronics and Motion control Conference, IPEMC 2024 ECCE Asia

作者： Li, Huang Gao, Fei Liu, Xin Niu, Huanjun He, Kai Liu, Yuxin Wang, Zhenghao Shanghai Jiao Tong University Department of Electrical Engineering Shanghai200240 China University of Electronic Science and Technology of China Shenzhen Institute for Advanced Study Shenzhen518110 China

ISBN: (纸本)9798350351330

Constant voltage (CV) charging is an essential stage in battery charging within an inductive power transfer (IPT) system. However, most existing research primarily focuses on investigating CV output under various load conditions. When the coupling coefficient varies, the output voltage correspondingly fluctuates. To address this issue, this paper proposes a CV output method for IPT *** dual-side LCC (inductive-capacitor-capacitor) configuration is chosen as the fundamental compensation network due to its constant current (CC) output characteristic. In the proposed method, the series compensation capacitors on both the primary and secondary sides are replaced with switched-controlled capacitors. By adjusting the capacitance of these switched-controlled capacitors, the system can achieve CV output. Simulation results are presented to validate the effectiveness of the proposed method. © 2024 IEEE.

关键词： Capacitance

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Density functional theory calculations on 2H-MoS_(2) monolayer for HCHO degradation:Piezoelectric-photocatalytic synergy

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Chinese Chemical Letters 2023年第5期34卷 337-342页

作者： Yushan Zhu Weina Zhao Binghua Jing Junhui Zhou Bihai Cai Didi Li Zhimin Ao Guangzhou Key Laboratory Environmental Catalysis and Pollution Control Guangdong Key Laboratory of Environmental Catalysis and Health Risk ControlSchool of Environmental Science and EngineeringInstitute of Environmental Health and Pollution ControlGuangdong University of TechnologyGuangzhou 510006China Department of Civil and Environmental Engineering The Hong Kong University of Science and TechnologyKowloonHong Kong 99977China Advanced Interdisciplinary Institute of Environment and Ecology Beijing Normal UniversityZhuhai 519087China

Formaldehyde(HCHO)is a common indoor gaseous pollutant,and long-term exposure to it may cause serious damage to the human immune *** degradation of HCHO is a promising ***,most photocatalysts have the disadvantage of rapid recombination of photo-generated electron-hole *** this work,the recombination of photogenerated electron holes was proposed to inhibit through the piezoelectric effect.A two-dimensional(2D)piezoelectric material,2H-MoS_(2),was selected to investigate the catalytic performance for HCHO degradation by the synergy of the piezoelectric and photocatalysis *** results show that the piezoelectric effect can induce the polarization in 2H-MoS_(2) and inhibit the recombination of photogenerated electron-hole pairs,thus improving the photogeneration of hydroxyl radicals for HCHO ***,the piezoelectric-photo-catalysis synergistic effect based on density functional theory(DFT)calculation was proposed to elucidate the HCHO degradation *** work could provide important guidance for the development of effective catalysts for HCHO degradation and the application of 2D piezoelectric materials.

关键词： Piezoelectricity Photocatalysis 2H-MoS_(2) HCHO Degradation

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Learning Agile Quadrotor Flight in Restricted Environments with Safety Guarantees

IEEE Transactions on Intelligent Vehicles

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IEEE Transactions on Intelligent Vehicles 2024年第9期9卷 1-8页

作者： Chen, Shiyu Li, Yanjie Lou, Yunjiang Lin, Ke Wu, Xinyu Department of Control Science and Engineering Harbin Institute of Technology Shenzhen and Guangdong Key Laboratory of Intelligent Morphing Mechanisms and Adaptive Robotics Shenzhen China Guangdong Provincial Key Laboratory of Robotics and Intelligent System Shenzhen Institute of Advanced Technology Chinese Academy of Sciences Shenzhen China

With the increasing requirement for agile and efficient controllers in safety-critical scenarios, controllers that exhibit both agility and safety are attracting attention, especially in the aerial robotics domain. This paper focuses on the safety issue of Reinforcement Learning (RL)-based control for agile quadrotor flight in restricted environments. To this end, we propose a unified Adaptive Safety Predictive Corrector (ASPC) to certify each output action of the RL-based controller in real-time, ensuring its safety while maintaining agility. Specifically, we develop the ASPC as a finite-horizon optimal control problem, formulated by a variant of Model Predictive control (MPC). Given the safety constraints determined by the restricted environment, the objective of minimizing loss of agility can be optimized by reducing the difference between the actions of RL and ASPC. As the safety constraints are decoupled from the RL-based control policy, the ASPC is plug-and-play and can be incorporated into any potentially unsafe controllers. Furthermore, an online adaptive regulator is presented to adjust the safety bounds of the state constraints with respect to the environment changes, extending the proposed ASPC to different restricted environments. Finally, simulations and real-world experiments are demonstrated in various restricted environments to validate the effectiveness of the proposed ASPC. IEEE

关键词： Reinforcement learning

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Delayed plasticity during spherical nanoindentation of an iron-chromium-aluminum alloy:Effect of ferric ion irradiation

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Journal of Materials science & Technology 2023年第36期167卷 228-236页

作者： Y.Zhang C.W.Li J.L.Jiang J.F.Gu H.Wang Y.D.Jia G.Wang X.G.An Q.Wang J.Lu Institute of Materials Shanghai UniversityShanghai 200072China School of Materials Science and Engineering Shanghai Jiao Tong UniversityShanghai 200240China Department of Mechanical Engineering City University of Hong KongKowloonSARChina Science and Technology on Reactor Fuel and Materials Laboratory Nuclear Power Institute of ChinaChengdu 610041China Interdisciplinary Materials Research Center Institute for Advanced StudyChengdu UniversityChengdu610106China

Spherical nanoindentation of an iron-chromium-aluminum alloy was conducted to study the effect of ferric-ion(Fe 3+)irradiation on the time-dependent plasticity behavior in the surface layers of this *** was observed that the initiation of plasticity by the appearance of displacement burst or“pop-in”event occurred after a period of waiting time in the apparent elastic regime and that Fe^(3+)irradiation at 360°C and up to∼0.5 displacements per atom could make it happen under the lower applied loads but with a reduced *** the experimental data,an activation volume and activation energy were extracted for the delayed *** results show that Fe^(3+)-irradiation significantly reduced its acti-vation volume from∼3.05 b 3 to∼1.75 b 3(where b=Burgers vector),but slightly increased its activation energy from∼0.65 to∼0.71 *** the other hand,high-resolution scanning transmission electron mi-croscopy observations reveal that the irradiation at the elevated temperature created interstitial atom pair onto the(100)habit plane that can serve as the nucleation site of a100dislocation loop while elim-inating the pre-existing ***,it is indicated that heterogeneous nucleation of the dislocation loop was predominant in the delayed plasticity initiation of this alloy and that the nucleation of the interstitial-type dislocation loop was involved due to Fe^(3+)-irradiation.

关键词： Spherical nanoindentation Delayed plasticity FeCrAl alloy Fe^(3+)-irradiation

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Pseudo-break imaging of carbon nanotubes for determining elastic bending energies

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Nano Research 2023年第5期16卷 7443-7451页

作者： Changfei Jing Yongji Qin Wengen Ouyang Jun Luo Institute for New Energy Materials and Low-Carbon Technologies and Tianjin Key Lab of Photoelectric Materials and Devices School of Materials Science and EngineeringTianjin University of TechnologyTianjin 300384China ShenSi Lab Shenzhen Institute for Advanced StudyUniversity of Electronic Science and Technology of ChinaShenzhen 518110China Department of Engineering Mechanics School of Civil EngineeringWuhan UniversityWuhan 430072China State Key Laboratory of Water Resources and Hydropower Engineering Science Wuhan UniversityWuhan 430072China

One-dimensional(1D)nanomaterials easily bend due to perturbations from their surroundings or their own *** phenomenon not only impacts the performances of various devices but has also been employed to develop a variety of new functional devices,in which the bending energies of the nanomaterials determine the device ***,measuring the energies of such nanomaterials is extremely ***,pseudo-break imaging of 1D nanomaterials has been proposed and realized on individual carbon nanotubes(CNTs),in which a CNT appears to break and has a fracture but is actually *** imaging approach provides the values of the bending energies of the CNTs with an accuracy of 1–50 ***,this imaging approach can manipulate the bending shapes and energies of *** work presents a protocol for bending analysis and manipulation,which are vital to fundamental and applied studies of 1D nanomaterials.

关键词： pseudo-break imaging carbon nanotube electron microscopy elastic bending energy

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Sampling from the Mean-Field Stationary Distribution 37

Sampling from the Mean-Field Stationary Distribution

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37th Annual Conference on Learning Theory, COLT 2024

作者： Kook, Yunbum Zhang, Matthew S. Chewi, Sinho Erdogdu, Murat A. Li, Mufan Georgia Institute of Technology United States Department of Computer Science University of Toronto Vector Institute Canada School of Mathematics Institute for Advanced Study United States Department of Operations Research and Financial Engineering Princeton University United States

We study the complexity of sampling from the stationary distribution of a mean-field SDE, or equivalently, the complexity of minimizing a functional over the space of probability measures which includes an interaction term. Our main insight is to decouple the two key aspects of this problem: (1) approximation of the mean-field SDE via a finite-particle system, via uniform-in-time propagation of chaos, and (2) sampling from the finite-particle stationary distribution, via standard log-concave samplers. Our approach is conceptually simpler and its flexibility allows for incorporating the state-of-the-art for both algorithms and theory. This leads to improved guarantees in numerous settings, including better guarantees for optimizing certain two-layer neural networks in the mean-field regime. A key technical contribution is to establish a new uniform-in-N log-Sobolev inequality for the stationary distribution of the mean-field Langevin dynamics. © 2024 Y. Kook, M. S. Zhang, S. Chewi, M. A. Erdogdu & M.(. Li.

关键词： Probability distributions

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