检索结果-内蒙古大学图书馆

SSRN 2022年

作者： Liu, Wenyi Huang, Haoliang Zeng, Shuming Zhou, Haiping Xie, Liang Jiang, Zhongyuan Zhang, Jian Wang, Lenan Wang, Jianlin Huang, Qiuping Fu, Zhengping Tu, Yusong Lu, Yalin Anhui Laboratory of Advanced Photon Science and Technology Hefei National Research Center for Physical Sciences at The Microscale University of Science and Technology of China Hefei230026 China School of Physical Science and Technology Yangzhou University Yangzhou225009 China School of Materials and Energy University of Electronic Science and Technology of China Chengdu611731 China Department of Physics North China University of Technology Beijing100144 China Department of Materials Science and Engineering CAS Key Laboratory of Materials for Energy Conversion University of Science and Technology of China Hefei230026 China

Effectively manipulating the orbital configuration is an emerging method to design quantum functional materials with novel electronic ground states. Here, we report the realization of large orbital polarization in rutile MnO2-δ epitaxial thin films by reductive treatments such as CaH2 coating annealing and hydrogen atmosphere annealing. These treated samples show significant lattice expansion due to the generation of oxygen vacancies and incorporation of H, and the mixed valence states of Mn2+ and Mn3+ are formed with the decrease in the Mn valence state. The X-ray linear dichroism results show that the electron occupied state of Mn in the treated film samples changes from 3d3z2-r2 to 3dx2-y2, which means that the deprivation of oxygen atoms in the oxygen octahedron of MnO6 causes a large orbital polarization. The resulting high spin state in the treated MnO2-δ films greatly enhances the magnetic properties of the films. This work not only demonstrates how the oxygen atoms in the edge-shared oxygen octahedron of rutile structures are replaced by reduction but also extends the study of orbital polarization and magnetic ground state control in oxide epitaxial films. © 2022, The Authors. All rights reserved.

关键词： Oxide films

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Metal-organic framework (MOF)/reduced graphene oxide (rGO) composite for high performance CO sensor

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Solid-State Electronics 2023年第1期204卷

作者： More, Mayuri S. Bodkhe, Gajanan A. Ingle, Nikesh N. Singh, Fouran Tsai, Meng-Lin Kim, Myunghee Shirsat, Mahendra D. RUSA Center for Advanced Sensor Technology Department of Physics Dr. Babasaheb Ambedkar Marathwada University MS Aurangabad431 004 India New Delhi110 067 India Department of Materials Science and Engineering National Taiwan University of Science and Technology Taipei City10607 Taiwan Department of Food Science and Technology Yeungnam University Gyeongsangbuk-do Gyeongsan38541 Korea Republic of

High performance gas sensors are urgently needed for the welfare of modern society. A challenge for sensors to detect analytes is its high response time. Herein, a carbon monoxide sensor has been fabricated using a NiO-based metal–organic framework(MOF)/reduced graphene oxide(rGO) composite. Synthesis of NiO-MOF and NiO-MOF/rGO were carried out by hydrothermal method. All the synthesized materials were multi parametrically tested by X-ray Diffraction (XRD), Fourier Transform Infrared spectroscopy (FT-IR), Raman spectroscopy, UV–visible spectroscopy, Atomic Force Microscopy (AFM), Field emission scanning electron microscopy (Fe-SEM), Current-Voltage characteristics (I-V), Brunauer-Emmett-Teller analysis (BET), etc. for their structural, spectroscopic, morphological, electrical, and surface properties respectively. The NiO-MOF/rGO based chemiresistive sensor fabricated on a glass substrate with a 100 µm gap through a shadow mask using an e-beam evaporator is stable up to 30 days and shows a selective response towards CO with excellent response and recovery, i.e. 30 s and 70 s respectively at 25 ppm. © 2023 Elsevier Ltd

关键词： Graphene

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The effects of TiN nanoparticle incorporation on the microstructure and wear resistance of additively manufactured CoCrMoW alloys

Smart Materials in Manufacturing

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Smart materials in Manufacturing 2025年 3卷

作者： Xiao, Canjuan Jiang, Wenting Huang, Yi Ni, Song State Key Laboratory of Powder Metallurgy Central South University Changsha 410083 China College of Materials and Advanced Manufacturing Hunan University of Technology Zhuzhou 412007 China Department of Design and Engineering Faculty of Science and Technology Bournemouth University Dorset Poole BH12 5BB United Kingdom Materials Research Group Department of Mechanical Engineering University of Southampton Southampton SO17 1BJ United Kingdom

To enhance the wear resistance of CoCrMoW alloys, this study used laser powder bed fusion (LPBF) to fabricate TiN nanoparticle-incorporated composites. By conducting microstructure characterization and wear resistance testing, the intricate relationship between microstructure and wear behavior was elucidated. The LPBF-fabricated samples presented dual-phase structures comprising face-centered cubic and hexagonal close-packed phases along with numerous stacking faults. The TiN particles were uniformly distributed in the sample with a 1 wt% addition. However, as the additive content increased, the TiN particles grew, and the interparticle spacing correspondingly decreased. Notably, robust interfacial bonding existed between the TiN nanoparticles and the matrix material. The interface between the TiN particles and the matrix displayed a semicoherent nature characterized by a specific orientation relationship: [001] _TiN//[011]_γ and (020)_TiN//(111)_γ. Compared to the nonincorporated sample, the incorporated samples demonstrated reduced friction coefficients and wear rates. A comparative analysis of the nonincorporated and incorporated samples’ wear behaviors revealed that oxidation wear predominantly characterized the nonincorporated sample, which displayed significant plastic deformation along with fragmented debris and loose oxides. In contrast, the incorporated samples presented relatively smooth wear surfaces where abrasive wear emerged as the primary mechanism. These findings underscore enhancements in tribological properties due to TiN incorporation and offer valuable insights into its fundamental behavior during wear. © 2025 The Authors

关键词： CoCrMoW alloy Laser powder bed fusion TiN nanoparticles Wear resistance

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Remove the water-induced traps toward improved performance in organic solar cells

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science China materials 2021年第11期64卷 2629-2644页

作者： Mumin Shi Tao Wang Rui Sun Qiang Wu Dandan Pei Hui Wang Wenyan Yang Wei Wang Yao Wu Guohua Xie Tao Wang Long Ye Jie Min The Institute for Advanced Studies Wuhan UniversityWuhan 430072China School of Materials Science and EngineeringTianjin UniversityTianjin 300072China School of Materials Science and Engineering Wuhan University of TechnologyWuhan 430070China Hubei Key Lab on Organic and Polymeric Optoelectronic Materials Department of ChemistryWuhan UniversityWuhan 430072China Beijing National Laboratory for Molecular Sciences Beijing 100190China Key Laboratory of Materials Processing and Mold(Zhengzhou University) Ministry of EducationZhengzhou 450002China

Clusters of water molecules have low ionization energies because of stabilization of charge from the dipole moment of surrounding molecules,and thus can form potential traps resulting in the undesirable photovoltaic performance in organic solar cells(OSCs).Herein,we demonstrated a solvent-water evaporation(SWE)strategy,which can effectively remove the water-induced traps that are omnipresent in photoactive layers,leading to a significant improvement in device performance.A higher power conversion efficiency of 17.10%and a better device photostability are achieved by using this SWE method,as compared with the untreated binary PM6:Y6 system(15.83%).We highlight the water-related traps as a limiting factor for carrier transport and extraction properties,and further reveal the good universality of the SWE strategy applied into *** addition,organic light-emitting diodes and organic field-effect transistors are investigated to demonstrate the applicability of this SWE *** strategy presents a major step forward for advancing the field of organic electronics.

关键词： non-fullerene acceptor water-induced traps charge transport device stability organic semiconductors

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Integration of ultrafine CuO nanoparticles with two‐dimensional MOFs for enhanced electrochemicgal CO_(2) reduction to ethylene

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Chinese Journal of Catalysis 2022年第4期43卷 1049-1057页

作者： Linlin Wang Xin Li Leiduan Hao Song Hong Alex WRobertson Zhenyu Sun State Key Laboratory of Organic‐Inorganic Composites Beijing University of Chemical TechnologyBeijing 100029China Department of Materials University of OxfordOxfordOX13PHUK Key Laboratory of Low‐Carbon Conversion Science&Engineering Shanghai Advanced Research InstituteChinese Academy of SciencesShanghai 201210China

To facilitate the electrochemical CO_(2) reduction(ECR)to fuels and valuable chemicals,the development of active,low cost,and selective catalysts is *** report a novel ECR catalyst consisting of CuO nanoparticles with sizes ranging from 1.4 to 3.3 nm anchored on Cu metal‐organic framework(Cu‐MOF)nanosheets obtained through a one‐step facile solvothermal *** nanocomposites provide multiple sites for efficient ambient ECR,delivering an average C_(2)H_(4) faradaic efficiency(FE)of~50.0%at–1.1 V(referred to the reversible hydrogen electrode)in 0.1 mol/L aqueous KHCO_(3) using a two‐compartment cell,in stark contrast to a C_(2)H_(4) FE of 25.5%and 37.6%over individual CuO and Cu‐MOF respectively,also surpassing most newly reported Cu‐based materials under similar cathodic *** C_(2)H_(4) FE remains at over 45.0%even after 10.0 h of successive ***,a~7.0 mA cm^(–2) C_(2)H_(4) partial geometric current density and 27.7%half‐cell C_(2)H_(4) power conversion efficiency are *** good electrocatalytic performance can be attributed to the interface between CuO and Cu‐MOF,with accessible metallic moieties and the unique two‐dimensional structure of the Cu‐MOF enhancing the adsorption and activation of CO_(2) *** finding offers a simple avenue to upgrading CO_(2) to value‐added hydrocarbons by rational design of MOF‐based composites.

关键词： Carbon dioxide reduction Electrocatalysis Copper oxide Metal‐organic framework Ethylene

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Regulation of nerve cells using conductive nanofibrous scaffolds for controlled release of Lycium barbarum polysaccharides and nerve growth factor

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Regenerative Biomaterials 2023年第1期10卷 919-932页

作者： Jing Wang Yuan Liu Minmin Lv Xiaoli Zhao Kwok Fai So Hui Li Mohamed EL-Newehy Hany EL-Hamshary Yosry Morsi Xiumei Mo Research Center for Human Tissues and Organs Degeneration Institute of Biomedicine and BiotechnologyShenzhen Institutes of Advanced TechnologyChinese Academy of SciencesShenzhen518055P.R.China Department of Orthopedics Shanghai Sixth People’s HospitalShanghai201306P.R.China University of Hong Kong-Shenzhen Hospital Shenzhen518053P.R.China State Key Laboratory of Brain and Cognitive Sciences The University of Hong KongPokfulamHong KongP.R.China Department of Ophthalmology The University of Hong KongPokfulamHong KongP.R.China Guangdong-Hong Kong-Macao Institute of CNS Regeneration Jinan UniversityGuangzhouP.R.China Department of Chemistry College of ScienceKing Saud UniversityRiyadh 11451P.O.Box 2455Saudi Arabia Faculty of Engineering and Industrial Sciences Swinburne University of TechnologyBoroondaraVIC 3122Australia State Key Laboratory for Modification of Chemical Fibers and Polymer Materials Shanghai Engineering Research Center of Nano-Biomaterials and Regenerative MedicineCollege of Biological Science and Medical EngineeringDonghua UniversitySongjiangShanghai201600P.R.China

Currently,more and more patients suffer from peripheral nerve injury due to trauma,tumor and other causes ***-based nerve conduits are increasingly recognized as a potential alternative to nerve autografts for the treatment of peripheral nerve ***,an ideal nerve conduit must offer topological guidance and biochemical and electrical signal transduction *** this work,aligned conductive nanofibrous scaffolds comprising polylactic-co-glycolic acid and multiwalled carbon nanotubes(MWCNTs)were fabricated via coaxial electrospinning,and nerve growth factor(NGF)and Lycium barbarum polysaccharides(LBP)purified from the wolfberry were loaded on the core and shell layers of the nanofibers,*** were confirmed to accelerate long-distance axon regeneration after severe peripheral nerve *** addition,the synergistic promotion of LBP and NGF on nerve cell proliferation and neurite outgrowth was *** were introduced into the aligned fibers to further increase the electrical conductivity,which promoted the directional growth and neurite extension of neurons in ***,the combination of conductive fibrous scaffolds with electrical stimulation that mimics endogenous electric fields significantly promoted the differentiation of PC12 cells and the axon outgrowth of *** on robust cell-induced behaviors,conductive composite fibers with optimized fiber alignment may be used for the promotion of nerve recovery.

关键词： conductive nanofibrous scaffold LBP NGF nerve cells electrical stimulation

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The Long-Acting Blue Perovskite Light-Emitting Diode Via Oxygen-Plasma Modification Nixoy Hole Transport Layer

SSRN

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SSRN 2023年

作者： Yan, Zhen-Li Huang, Hong-Yu Benas, Jean-Sebastien Yang, Ching-Wei Su, Chun-Jen Liang, Fang-Cheng Chen, Wei-Cheng Tsai, Hsinhan Jeng, Ru-Jong Kuo, Chi-Ching Institute of Polymer Science and Engineering Advanced Research Center for Green Materials Science and Technology National Taiwan University Taipei10617 Taiwan Institute of Organic and Polymeric Materials Research Development Center of Smart Textile Technology National Taipei University of Technology Taipei10608 Taiwan National Synchrotron Radiation Research Center 101 Hsin-Ann Road Hsinchu Science Park Hsinchu30076 Taiwan Department of Chemistry University of California Berkeley BerkeleyCA94720 United States

Nowadays, wide-color gamut perovskite light-emitting diodes (PeLEDs) are commonly prepared by halide composition tuning. However, when perovskite crystals form by different ion radii of halogens, there is a high probability of structural fragility and ionic defects, which lead to emission instability during operation. This study demonstrated a homogeneous and low-defect crystalline state with regulating the thermodynamic nucleation mechanism of sky-blue perovskite that enhances emission stability. We use the oxygen-plasma treatment to prepare highly uniformed surface energy of the nickel oxide as a hole transport layer which not only trigger homogenous nucleation of perovskite layer but also further suppress the crystal defects. Simultaneously, the uniform surface energy palliates the phase separation of halide caused by the Ostwald ripening. After optimizing the fabrication conditions of sky-blue perovskite, the sky-blue PeLEDs with EL peak position at 486 nm have reached the luminance of 1125.3 cd/m2 and an EQE of 5.80% with excellent EL stability and T50 lifetime. In addition, understanding the thermodynamic nucleation mechanism in mix-halides perovskites shed the light on the sky-blue PeLEDs research and provide insights for future development. © 2023, The Authors. All rights reserved.

关键词： Nucleation

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Investigation of different membrane porosities on the permeate flux of direct contact membrane distillation 6th

Investigation of different membrane porosities on the permea...

引用

6th International Conference on Composite materials and Material engineering, ICCMME 2021

作者： Elrasheedy, Asmaa Rabie, Mohammed Elshazly, Ahmed Bassyouni, Mohamed El-Moneim, Ahmed Abd Kady, Marwa El Alexandria21934 Egypt Department of Chemical Engineering Faculty of Engineering Port Said University Port Said42526 Egypt Mechanical Power Engineering Department Mansoura University El-Mansoura35516 Egypt Chemical Engineering Department Faculty of Engineering Alexandria University Alexandria21544 Egypt Materials Science Program Zewail University of Science and Technology City of Science and Technology October Gardens 6th of October Giza12578 Egypt Materials Science and Engineering Department Egypt-Japan University of Science and Technology NewBorg El-Arab Alexandria21934 Egypt Institute of Basic and Applied Sciences Egypt-Japan University of Science and Technology New Borg El-Arab Alexandria21934 Egypt Borg El-Arab City Alexandria21934 Egypt

ISBN: (纸本)9783035718195

In the present study the surface morphology of electrospun fibers at different polystyrene (PS) solution concentration was studied by SEM imaging to determine the best PS solution concentration yielding continuous uniform beadles fibers. Contact angle measurements of the optimum fabricated PS-18 membrane confirmed the super hydrophobic property of the membrane that exhibited a static water contact angle of 145o . Numerical investigation of the performance of PS-18 membrane at different membrane thicknesses and porosities on direct contact membrane distillation showed that increasing the membrane porosity increases the permeate flux considerably. © 2021 Trans Tech Publications Ltd, Switzerland.

关键词： Polystyrenes

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Characterization of Plasma Electrolytic Oxidation Coatings Containing Carbon Nanotubes Formed on Selective Laser Melted Alsi10mg Alloy

SSRN

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SSRN 2022年

作者： Wang, Qun Fang, Bingbing Liu, Chenyu Tu, SiSi Cha, Limei Ramachandran, Chidambaram Seshadri College of Materials Science and Engineering Hunan University Hunan Changsha410082 China Material Science and Engineering Program Guangdong Technion Israel Institute of Technology Shantou515063 China Guangdong Provincial Key Laboratory of Materials and Technologies for Energy Conversion Guangdong Technion Israel Institute of Technology Shantou515063 China Department of Materials Science and Engineering The State University of New York Stony BrookNY11794 2275 United States

In this study,Plasma Electrolytic Oxidation(PEO)coatings with Carbon Nanotubes(CNTs)were prepared on Selective Laser Melting(SLM)AlSi10Mg alloy by PEO treatment with CNTs addition to the *** mechanism of doping CNTs into PEO coatings and the morphology of the resultant PEO coatings were mainly *** corrosion and wear/tribological resistance of PEO coatings with CNTs addition were examined by electrochemical experiments and dry sliding *** results indicate that: the addition of CNTs resulted in a dense outer layer composed of γ-Al 2 O 3 ,and the inner layer was a porous layer composed of amorphous Al 2 O 3 and amorphous SiO 2 .In addition,the CNT significantly increased the hardness and wear resistance of the PEO coatings formed on the SLM AlSi10Mg. © 2022, The Authors. All rights reserved.

关键词： Alloys

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Insulating materials for realising carbon neutrality:Opportunities,remaining issues and challenges

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High Voltage 2022年第4期7卷 610-632页

作者： Chuanyang Li Yang Yang Guoqiang Xu Yao Zhou Mengshuo Jia Shaolong Zhong Yu Gao Chanyeop Park Qiang Liu Yalin Wang Shakeel Akram Xiaoliang Zeng Yi Li Fangwei Liang Bin Cui Junpeng Fang Lingling Tang Yulin Zeng Xingtao Hu Jiachen Gao Giovanni Mazzanti Jinliang He Jianxiao Wang Davide Fabiani Gilbert Teyssedre Yang Cao Feipeng Wang Yunlong Zi The State Key Laboratory of Power System Department of Electrical EngineeringTsinghua UniversityBeijingChina Department of Mechanical and Automation Engineering The Chinese University of Hong KongHong KongChina Simpson Querrey Institute Northwestern UniversityEvanstonIllinoisUSA Department of Materials Science and Engineering The Pennsylvania State UniversityUniversity ParkPennsylvaniaUSA Department of Information Technology and Electrical Engineering ETH ZürichZürichSwitzerland School of Electrical and Information Engineering Tianjin UniversityTianjinChina Department of Electrical and Computer Engineering Mississippi State UniversityMississippi StateMississippiUSA Electrical and Electronic Engineering The University of ManchesterManchesterUK Department of Electrical Engineering School of Electronic Information and Electrical EngineeringShanghai Jiao Tong UniversityShanghaiChina Key Laboratory of Control of Power Transmission and Conversion(SJTU) Ministry of EducationShanghaiChina College of Electrical Engineering Sichuan UniversityChengduChina Shenzhen Institute of Advanced Technology Chinese Academy of Sciences ShenzhenShenzhenChina School of Electrical Engineering Wuhan UniversityWuhanChina School of Integrated Circuits Tsinghua UniversityBeijingChina Jiangsu Jinxin Electric Appliance Co.Ltd. YangzhouChina Tai'an Tiancheng Safety Evaluation Co. Ltd.Tai'anChina Department Electrical Electronic and Information EngineeringUniversity of BolognaBolognaItaly National Engineering Laboratory for Big Data Analysis and Applications Peking UniversityBeijingChina Laplace Paul Sabatier Universityand CNRSToulouseFrance Electrical and Computer Engineering University of ConnecticutStorrsConnecticutUSA State Key Laboratory of Power Transmission Equipment&System Security and New Technology School of Electrical EngineeringChongqing UniversityChongqingChina Thrust of Sustainable Energy and Environment The Hong Kong University of Science and Technology(Guangzhou)GuangzhouChina De

The 2050 carbon-neutral vision spawns a novel energy structure revolution,and the construction of the future energy structure is based on equipment *** material,as the core of electrical power equipment and electrified transportation asset,faces unprecedented challenges and *** goal of carbon neutral and the urgent need for innovation in electric power equipment and electrification assets are first *** engineering challenges constrained by the insulation system in future electric power equipment/devices and electrified transportation assets are *** materials,including intelligent insulating material,high thermal conductivity insulating material,high energy storage density insulating material,extreme environment resistant insulating material,and environmental-friendly insulating material,are cat-egorised with their scientific issues,opportunities and challenges under the goal of carbon neutrality being *** the context of carbon neutrality,not only improves the understanding of the insulation problems from a macro level,that is,electrical power equipment and electrified transportation asset,but also offers opportunities,remaining issues and challenges from the insulating material *** is hoped that this paper en-visions the challenges regarding design and reliability of insulations in electrical equipment and electric vehicles in the context of policies towards carbon neutrality *** authors also hope that this paper can be helpful in future development and research of novel insulating materials,which promote the realisation of the carbon-neutral vision.

关键词： neutral insulation extreme

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