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2023 International Automatic Control Conference, CACS 2023

作者： Lin, Hao-Pu Han, Chin-Chuan Liao, Jun-Wei Ciou, Chong-Han Hong, Yi-Cheng Tan, Ming-Lun National United University Ph. D. Program in Material and Chemical Engineering MiaoLi Taiwan National United University Department of Computer Science and Information Engineering MiaoLi Taiwan

ISBN: (纸本)9798350306354

COVID-19 outbreaks and becomes serious from 2019 winter. Taking body temperature, wearing masks, recording footprint and avoiding crowds become important tasks and require a lot of manpower support for the prevention of the epidemic in every. In this study, we have integrated the infrared thermometer devices to measure people temperature and the people identities through RGB images at the entrance of buildings. Using the computer vision and deep learning methods, we would like to build a 24/7 and region-wide coverage assistance system to automatically record the footprint of a specific people in the building. We also detect if people taking off their masks in the yard at any time. The processing videos are grabbed from the existing CCTV systems. The developed system also locates the crowd and calculate the number of people in a specified area, and the manager can know the number of people and control the access in real time. It will reduce the burden of manpower. In addition, we have optimized the system performance to handle multiple camera videos and to reduce the hardware cost at the same time. © 2023 IEEE.

关键词： Access control

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Fe single atom trigger asymmetric In-In polarized site pairs boosting near-infrared N2 photoreduction

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materials Today 2025年 86卷 96-103页

作者： Liang, Huimin Ye, Caichao Wu, Yao Li, Yezi Long, Ran Xiong, Jun Jiang, Wei Di, Jun School of Chemistry and Chemical Engineering National Special Superfine Powder Engineering Research Center Nanjing University of Science and Technology Nanjing210094 China Academy for Advanced Interdisciplinary Studies & Department of Materials Science and Engineering Guangdong Provincial Key Laboratory of Computational Science and Material Design Southern University of Science and Technology Shenzhen518055 China School of Materials Science & Engineering Nanyang Technological University Singapore639798 Singapore National Synchrotron Radiation Laboratory CAS Center for Excellence in Nanoscience School of Chemistry and Materials Science University of Science and Technology of China Hefei230026 China Institute for Energy Research Jiangsu University Zhenjiang212013 China

Building differentiated charge distributed polarized atomic pairs may be an alternative for N2 activation. In this work, CuInS2 atomic layers with asymmetric In-In polarized site pairs are prepared by doping Fe single atoms, as proved by X-ray absorption fine structure spectroscopy, quasi in situ X-ray photoelectron spectra and calculated atomic charge distribution. The engineered Fe single atoms tuned the surface atomic charge distribution, building local polarization center to boost directional surface charge separation. The formed In-In polarized site pairs with asymmetric charge distribution creates distinct interaction with two N atoms in N2 molecule, contributing to the enhanced activation of N2. The alternating pathway is regarded as hydrogenation pathway over Fe-CuInS2 with *NNH formation as rate-determining step. The charge-redistributed surface atomic structure after engineered Fe single atoms strengthens intermediate interaction and lower the rate-determining step energy barrier. Benefiting from these features, Fe-CuInS2 exhibits excellent photocatalytic activity under near-infrared (NIR) irradiation with an ammonia synthesis rate of 94.1 μmol g−1 h−1. In comparison, the N2-NH3 conversion rate of Fe-CuInS2 under ultraviolet–visible (UV–Vis) irradiation could reach 137.4 μmol g−1 h−1, which is about 6.8 times higher than that of CuInS2. The apparent quantum efficiencies of Fe-CuInS2-2 at 380, 400, 450, 500, 550, 650, 700, 800, 850 and 1064 nm were 3.0 %, 3.3 %, 2.7 %, 2.1 %, 2.0 %, 1.5 %, 1.3 %, 0.4 %, 0.7 % and 0.6 %, respectively. © 2025 Elsevier Ltd

关键词： X ray absorption fine structure spectroscopy

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Site difference influence of anchored Ru in mesoporous carbon on electrocatalytic performance toward pH-universal hydrogen evolution reaction

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Rare Metals 2023年第12期42卷 4015-4028页

作者： Xiao-Fang Ma He Xiao Yan-Ying Jing Yang Gao Ying-Luo He Man Zhao Jian-Feng Jia Hai-Shun Wu Key Laboratory of Magnetic Molecules and Magnetic Information Materials Ministry of Education School of Chemical and Material ScienceShanxi Normal UniversityTaiyuan 030032China Department of Applied Chemistry School of EngineeringUniversity of ToyamaToyama 930-8555Japan

Ru-based electrocatalysts have demonstrated excellent electrocatalytic performance toward hydrogen evolution reaction(HER).However,designing Ru nanoparticles/nanoclusters(Ru NPs/NCs)with abundant accessible active sites is ***,a selective facile hydrothermal in situ polymerization strategy is described to accurately control the anchoring point of Ru in hollow mesoporous carbon spheres(HMCs)(outer surface,HMCs@Ru;cavity,Ru@HMCs;and pore channels,Ru/SHMCs).The HER mechanisms of the three catalysts over a wide pH range were revealed by analyzing the loading position,content,dispersion,particle size,and valence state of ***@Ru shows excellent area activity,with overpotentials of 64.3,2.8,and 78.1 mV at 10 mA·cm^(-2)in0.5 mol·L^(-1)H_(2)SO_(4),1 mol·L^(-1)KOH;and 0.5 mol·L^(-1)phosphate buffer saline(PBS)solutions,***/S-HMCs exhibit high mass activity,with values 43.3,2.9,and 12.7 times those of Pt/C in alkaline,acidic,and neutral media,respectively,at-50 mV(*** hydrogen electrode(RHE)).After 2000 cyclic voltammetry cycles,the performances of HMCs@Ru and Ru/S-HMCs hardly decrease,indicating good *** excellent electrocatalytic activity can be attributed to two main factors:(1)the confinement effect,which not only promotes high Ru dispersion but also prevents the leaching of active metal under harsh conditions,and(2)their excellent structural *** catalyst structure features a large hollow located in the center(~160 nm in diameter)and an ultrathin monolayer of mesopores(~6 nm)uniformly distributed on the hollow shells,ensuring fast mass diffusion and electron transfer kinetics,as well as complete accessibility of catalytic sites.

关键词： Confinement effect Ru Monolayer hollow mesoporous carbon(HMC) Hydrogen evolution reaction(HER)

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Topological graph-based analysis of solid-state ion migration

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npj Computational materials 2023年第1期9卷 1337-1341页

作者： Jimmy-Xuan Shen Haoming Howard Li Ann Rutt Matthew K.Horton Kristin A.Persson Materials Science Division Lawrence Livermore National LaboratoryLivermoreCAUSA Materials Sciences Division Lawrence Berkeley National LaboratoryBerkeleyUSA Department of Material Science and Engineering University of CaliforniaBerkeleyCAUSA Molecular Foundry Lawrence Berkeley National LaboratoryBerkeleyUSA

To accelerate the development of ion conducting materials,we present a general graph-theoretic analysis framework for ion migration in any crystalline *** nodes of the graph represent metastable sites of the migrating ion and the edges represent discrete migration events between adjacent *** from a collection of possible metastable migration sites,the framework assigns a weight to the edges by calculating the individual migration energy barriers between those *** pathways in the periodic simulation cell corresponding to macroscopic ion migration are identified by searching for the lowest-cost cycle in the periodic migration *** exemplify the utility of the framework,we present the automatic analyses of Li migration in different polymorphs of VO(PO_(4)),with the resulting identification of two distinct crystal structures with simple migration pathways demonstrating overall<300 meV migration barriers.

关键词： analysis migration metastable

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Phase-change VO_(2)-based thermochromic smart windows

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Light(science & Applications) 2024年第11期13卷 2489-2510页

作者： Cancheng Jiang Lanyue He Qingdong Xuan Yuan Liao Jian-Guo Dai Dangyuan Lei Department of Materials Science and Engineering Centre for Functional Photonicsand Hong Kong Branch of National Precious Metals Material Engineering Research CentreCity University of Hong KongKowloonHong Kong 999077China Department of Refrigeration and Cryogenics Engineering Hefei University of Technology193 Tunxi RoadHefei 230009China Department of Architecture and Civil Engineering City University of Hong KongKowloonHong Kong 999077China

Thermochromic coatings hold promise in reducing building energy consumption by dynamically regulating the heat gain of windows,which are often regarded as less energy-efficient components,across different *** dioxide(VO_(2))stands out as a versatile thermochromic material for smart windows owing to its reversible metal-toinsulator transition(MIT)alongside correlated structural and optical *** this review,we delve into recent advancements in the phase-change VO_(2)-based thermochromic coatings for smart windows,spanning from the macroscopic crystal level to the microscopic structural level(including elemental doping and micro/nanoengineering),as well as advances in controllable *** is notable that hybridizing functional elements/materials(e.g.,W,Mo/SiO_(2),TiN)with VO_(2)in delicate structural designs(e.g.,core-shell,optical cavity)brings new degrees of freedom for controlling the thermochromic properties,including the MIT temperature,luminous transmittance,solarenergy modulation ability and building-relevant ***,we provide an overview of alternative chromogenic materials that could potentially complement or surpass the intrinsic limitations of VO_(2).By examining the landscape of emerging materials,we aim to broaden the scope of possibilities for smart window *** also offer insights into the current challenges and prospects of VO_(2)-based thermochromic smart windows,presenting a roadmap for advancing this field towards enhanced energy efficiency and sustainable building *** summary,this review innovatively categorizes doping strategies and corresponding effects of VO_(2),underscores their crucial NIRenergy modulation ability for smart windows,pioneers a theoretical analysis of inverse core-shell structures,prioritizes practical engineering strategies for solar modulation in VO_(2)films,and summarizes complementary chromogenic materials,thus ultimately advancing VO_(2)-based smart windo

关键词： smart doping luminous

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Bio-inspired barnacle cement coating of biodegradable magnesium alloy for cerebrovascular application

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Rare Metals 2024年第10期43卷 5164-5185页

作者： Hang Li Fei Wang Xiao-Jing Sun Liu-Jie Qi Jing-An Li Mujahid Iqbal Shao-Kang Guan School of Material Science and Engineering Zhengzhou UniversityZhengzhou 450000China Henan Key Laboratory of Advanced Magnesium Alloy&Key Laboratory of Materials Processing and Mold(Ministry of Education) Zhengzhou UniversityZhengzhou 450000China Department of Physics University of Agriculture FaisalabadFaisalabad 38000Pakistan

Ischemic stroke is increasing worldwide,and stent intervention has gradually become one of the effective *** to its good mechanical properties and biocompatibility,biodegradable Mg-Zn-Y-Nd alloy(ZE21B)has good application prospects in vascular ***,too fast degradation and delayed endothelialization are the bottleneck problem to limit its further *** this study,the bio-inspired coating barnacle cement cp19k is constructed on ZE21B surface through electrostatic spraying to improve the corrosion resistance and pro-endothelialization *** coating was evaluated through electrochemistry,static immersion corrosion,in vitro blood experiments and cell ***19k effectively improved the corrosion resistance of the substrate ZE21B,reduced the degradation rate,improved endothelial cell proliferation and migration capabilities,inhibited smooth muscle cells proliferation and regulated contractile phenotype,inhibited macrophage adhesion,regulated macrophage M2 phenotype,and reduced the expression of inflammatory factor of TNF-a and inhibited fibroplasia in *** data indicated that the barnacle cement cp19k coating had potential application on the surface modification of Mg alloy cerebrovascular stent.

关键词： Cerebrovascular stent Biodegradable magnesium alloy Barnacle cement cp19k Proendothelialization M2 phenotype

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Investigation of Accuracy of Linear Motor Positioning Systems using Different Filters 11

Investigation of Accuracy of Linear Motor Positioning System...

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11th IEEE Open Conference of Electrical, Electronic and Information sciences, eStream 2024

作者： Urbonas, Edgaras Kilikevicius, Arturas Savickas, Julius Valaitis, Danielius Vilnius Gediminas Technical University Department of Mechanical and Material Engineering Vilnius Lithuania Vilnius Gediminas Technical University Institute of Mechanical Science Vilnius Lithuania

ISBN: (纸本)9798350352412

Fast-paced competition in the industrial environment requires high-precision, high-performance systems that allow industry players to stay on top. Precise changes to the mechanical structure of the positioning system are no longer sufficient. This paper examines the axis of a precision positioning system with a linear motor. System controllers (PIDs) of various architectures are investigated to determine their impact on the platform using three system controllers. © 2024 IEEE.

关键词： Linear motors

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Highly Scalable Vertical Bypass RRAM (VB-RRAM) for 3D v -NAND Memory

Highly Scalable Vertical Bypass RRAM (VB-RRAM) for 3D v -NAN...

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2024 IEEE Symposium on VLSI Technology and Circuits, VLSI Technology and Circuits 2024

作者： Han, Geonhui Kim, Youngdong Kim, Jaeseon Kim, Dongmin Seo, Yoori Lee, Chuljun Choi, Jinmyung Lee, Jinwoo Ahn, Dongho Oh, Sechung Lee, Donghwa Hwang, Hyunsang Department of Material Science and Engineering Pohang37673 Korea Republic of Advanced Process Development Team 2 Samsung Electronics Gyeonggi-do Korea Republic of

ISBN: (纸本)9798350361469

We firstly demonstrate highly scalable interface type RRAM based 3D V-NAND memory with WOx resistivity switching (RS) layer and IGZO selector transistor (Tr). 3D vertical interface type RRAM integrated with IGZO Tr (VB-RRAM), utilizing bypass reading between Tr and RS layer, exhibits low voltage operation ( 107 cycles), and low switching energy consumption (5 fJ). Finally, critical V-NAND issues like read disturbance and interface layer were also evaluated. © 2024 IEEE.

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Recent advances in bismuth-based photocatalysts:Environment and energy applications

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Green Energy & Environment 2023年第5期8卷 1232-1264页

作者： Sijia Song Zipeng Xing Huanan Zhao Zhenzi Li Wei Zhou Department of Environmental Science School of Chemistry and Materials ScienceKey Laboratory of Functional Inorganic Material ChemistryMinistry of Education of the People's Republic of ChinaHeilongjiang UniversityHarbin150080China Shandong Provincial Key Laboratory of Molecular Engineering School of Chemistry and Chemical EngineeringQilu University of Technology(Shandong Academy of Sciences)Jinan250353China

Photocatalysis is an effective way to solve the problems of environmental pollution and energy *** photocatalysts have been developed and various strategies have been proposed to improve the photocatalytic *** them,Bi-based photocatalysts have become one of the most popular research topics due to their suitable band gaps,unique layered structures,and physicochemical *** this review,Bi-based photocatalysts(BiOX,BiVO_(4),Bi_(2)S_(3),Bi_(2)MoO_(6),and other Bi-based photocatalysts)have been summarized in the field of photocatalysis,including their applications of the removal of organic pollutants,hydrogen production,oxygen production *** preparation strategies on how to improve the photocatalytic performance and the possible photocatalytic mechanism are also summarized,which could supply new insights for fabricating high-efficient Bi-based ***,we summarize the current challenges and make a reasonable outlook on the future development direction of Bi-based photocatalysts.

关键词： Photocatalysis Bismuth based photocatalyst Hydrogen evolution Solar fuel energy Environment remediation

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Recent advances in flexible self-oscillating actuators

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escience 2024年第5期4卷 91-109页

作者： Jingjing Li Wenjin Guo Weiqiang Zhao Yutian Zhu Jie Bai Zhigang Xia Xiang Zhou Zunfeng Liu School of Textile Science and Engineering State Key Laboratory of New Textile Materials and Advanced Processing TechnologiesWuhan Textile UniversityWuhan 430200China State Key Laboratory of Medicinal Chemical Biology Key Laboratory of Functional Polymer MaterialsTianjin Key Laboratory of Functional Polymer MaterialsSmart Sensing Interdisciplinary Science CenterCollege of ChemistryNankai UniversityTianjin 300350China College of Material Chemistry and Chemical EngineeringKey Laboratory of Organosilicon Chemistry and Material TechnologyMinistry of EducationKey Laboratory of Organosilicon Material TechnologyHangzhou Normal UniversityHangzhou 311121China College of Chemistry and Chemical Engineering Inner Mongolia Univ TechnolChem Engn CollHohhot 010051China Department of Science China Pharmaceutical UniversityNanjing 211198China

Soft actuators are constituted by a type of intelligent materials,and they can generate reversible mechanical motions under external *** usually achieve continuous actuation by manual turning on or off the power supply,which significantly increases the operation *** contrast,self-oscillating actuators can achieve autonomous motions under constant stimuli,and have recently attained great advancements,as well as promoted the development of autonomous soft *** this review,the latest achievements of soft oscillators are ***,the self-oscillating mechanisms mainly including oscillating chemical reactions and self-shadowing-induced mechanical negative feedback loops are *** oscillators constructed with various materials and configurations,driven by different stimuli and applied in different fields are then presented in ***,the difficulties and hopes of oscillators are ***,self-oscillating actuators are in the stage of vigorous development,and we believe that in the future,they will be used in various fields and make many scenarios more intelligent and autonomous.

关键词： Oscillating actuator Artificial muscles Polymer composite Biomimetic Smart materials

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