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Zeolitic imidazolate framework-67 derived Al-Co-S hierarchical sheets bridged by nitrogen-doped graphene:Incorporation of PANI derived carbon nanorods for solid-state asymmetric supercapacitors

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Journal of Energy Chemistry 2022年第11期31卷 429-445,I0012页

作者： Emad S.Goda Bidhan Pandit Sang Eun Hong Bal Sydulu Singu Seong K.Kim Essam B.Moustafa Kuk Ro Yoon Kuk Ro Yoon Organic Nanomaterials Lab Department of ChemistryHannam UniversityDaejeon 34054Republic of Korea Gas Analysis and Fire Safety Laboratory Chemistry DivisionNational Institute for Standards136Giza 12211Egypt Department of Materials Science and Engineering and Chemical Engineering Universidad Carlos Ⅲ de MadridAvenida de La Universidad 3028911 LeganésMadridSpain Department of Chemical and Biomolecular Engineering Yonsei UniversitySeoul 03722Republic of Korea Department of Chemical Engineering Hannam University1646 Yuseongdae-roYuseong-guDaejeon 34054Republic of Korea Mechanical Engineering Department Faculty of EngineeringKing Abdulaziz UniversityP.O.Box 80204Jeddah 22254Saudi Arabia

Metal sulfides have been widely enticed as battery-type electrodes in supercapacitor devices because of their maximal theoretical ***,their lower conductivity and ion transport kinetics can largely restrict their rate performance,hence the practical usage in fields of demanding high power ***,the design of new electrodes with higher energy and power densities remains a highly challenging *** the best of our knowledge,a novel hierarchical composite of Al-CoS_(2) on nitrogendoped graphene(NG)is prepared based on a zeolite imidazole framework using a simple and scalable hydrothermal *** this hybrid,ultrathin Al-CoS_(2) nanosheet arrays are vertically orientated on the NG framework to limit self-aggregation,hence increasing the electrical property and cycle stability of *** is investigated that the Al/Co feeding ratio plays a crucial role in controlling the obtained hierarchical structure of Al-Co-S sheets and their electrode ***,Al^(3+) can influence remarkably the morphology and electrochemical property of the resultant graphene *** effective synergism is noticed between the redox Al-CoS_(2) and NG resulting in fast electron transfer and chargingdischarging ***,when the as-developed composite is utilized as a positive electrode at an applied current density of 1 A/g,a specific capacitance of 1915.8 F/g is attained with ultra-long cycle stability(96%,10,000 cycles)and an excellent retention rate(~89%).As a consequence,when a solid-state asymmetric supercapacitor(ASC)device is made by combining an Al-CoS_(2) @NG hybrid with a negative electrode made of polyaniline(PANI)derived carbon nanorods(PCNRs),it demonstrates remarkable specific capacitance(188 F/g),energy density(66.9 Wh/kg),and cyclic stability of 92%after 10,000 *** may open the pathway for the application of the next-generation supercapacitors in the future.

关键词： Hierarchical sheets MOFs Al-doped CoS_(2) Nitrogen-doped graphene Solid-state supercapacitor

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An experimental investigation of friction behaviour in micro/meso forming processes 3

An experimental investigation of friction behaviour in micro...

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3rd International Conference on Artificial Intelligence and Advanced Manufacture, AIAM 2021

作者： Zheng, Wei Han, Juanjuan Yan, Weidong Lin, Xiaojuan School of Mechanical Engineering Shandong University Jinan China School of Materials Science and Engineering Shandong Jianzhu University Jinan China

ISBN: (纸本)9781450385046

The friction behaviours in micro forming are very different from the ones in the traditional forming due to the effect of scale. In this work, using the micro/meso upsetting experiments with and without liquid lubricant, the influence of sample dimensions, grain size and surface roughness on tribological behaviours were investigated by introducing the shape parameter ψ. It is found that: as the grain size and surface roughness of samples go down, the shape parameter ψ decreases under both lubrication conditions;as the sample diameter reduces, the shape parameter ψ is roughly unchanged under the condition without lubricant and decreased under liquid lubrication condition. © 2021 ACM.

关键词： Surface roughness

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High‑Energy-Density Fiber Supercapacitors Based on Transition Metal Oxide Nanoribbon Yarns for Comprehensive Wearable Electronics

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Advanced Fiber materials 2024年第6期6卷 1927-1941页

作者： Junseong Ahn Suchithra Padmajan Sasikala Yongrok Jeong Jin Goo Kim Ji‑Hwan Ha Soon Hyoung Hwang Sohee Jeon Junhyuk Choi Byung‑Ho Kang Jihyeon Ahn Jun‑Ho Jeong Sang Ouk Kim Inkyu Park Department of Electro‑Mechanical Systems Engineering Korea UniversitySejong 30019Republic of Korea Department of Materials Science and Engineering Korea Advanced Institute of Science and Technology(KAIST)Daejeon 34141Republic of Korea National Creative Research Initiative Center for Multi‑Dimensional Directed Nanoscale Assembly Korea Advanced Institute of Science and Technology(KAIST)Daejeon 34141Republic of Korea Department of Mechanical Engineering Korea Advanced Institute of Science and Technology(KAIST)Daejeon 34141Republic of Korea Department of Nano Manufacturing Technology Korea Institute of Machinery and Materials(KIMM)Daejeon 34103Republic of Korea Radioisotope Research Division Korea Atomic Energy Research Institute(KAERI)Daejeon 34057Republic of Korea

Fiber supercapacitors(FSs)based on transition metal oxides(TMOs)have garnered considerable attention as energy stor-age solutions for wearable electronics owing to their exceptional characteristics,including superior comfortability and low *** materials are known to exhibit high energy densities,high specific capacitances,and fast redox ***,current fabrication methods for these structures primarily rely on chemical deposition,often resulting in undesir-able material structures and necessitating the use of additives,which can degrade the electrochemical performance of such ***,physically deposited TMO nanoribbon yarns generated via delamination engineering of nanopatterned TMO/metal/TMO trilayer arrays are proposed as potential high-performance *** prepare these arrays,the target materials were initially deposited using a nanoline mold,and subsequently,the nanoribbon was suspended through selective plasma etching to obtain the desired twisted yarn *** of the direct formation of TMOs on Ni electrodes,a high energy/power density and excellent electrochemical stability were achieved in asymmetric FS devices incorporating CoNixOy nanoribbon yarns and graphene ***,a triboelectric nanogenerator,pressure sensor,and flexible light-emitting diode were synergistically combined with the *** integration of wearable electronic components,encompassing energy harvesting,energy storage,and powering sensing/display devices,is promising for the development of future smart textiles.

关键词： Fiber supercapacitor Transition metal oxide Nanoribbon yarn Wearable devices Nanostructuring

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Integration of a Microfluidics System With a U-Shaped Optical Fiber Sensor for Sensing Various Concentrations of Glucose

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IEEE Sensors Journal 2024年第13期24卷 20617-20628页

作者： Hsiang-Cheng Hsu Tien-Bao Tran Thi Thuy-Vy Nguyen Hoang-Dang Le Chia-Chin Chiang Department of Ph.D. Program in Maritime Science and Technology College of Maritime National Kaohsiung University of Science and Technology Kaohsiung Taiwan Department of Mechanical Engineering National Kaohsiung University of Science and Technology Kaohsiung Taiwan College of Engineering Can Tho University Ninh Kieu Can Tho Vietnam

This study introduces a successfully manufactured U-shaped optical fiber sensor integrated with a microfluidics system to detect varying glucose concentrations. It outlines the fabrication process of the microfluidics system, accomplished using a CO2 laser on polymethyl methacrylate (PMMA) material. Through three cycles of experiments involving different glucose concentrations, the results indicate a consistent trend in both resonance wavelength and transmission loss, showing an increase as glucose concentration rises from 5% to 50%. The system demonstrates a high wavelength sensitivity coefficient of 0.114 nm/% with ${R}^{{2}} =0.95$ and a notable transmission loss sensitivity of 0.09 dB/% and ${R}^{{2}} =0.94$ . This advanced system proves to be effective in achieving rapid, sensitive, and cost-efficient glucose monitoring. Consequently, the microfluidics system is deemed suitable for its intended purpose.

关键词： Microfluidics Glucose Optical fiber sensors Sensors Sensitivity Claddings Viscosity

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Achieving High Strength-Ductility Properties of Wire-Arc Additive Manufactured Al-Mg-Sc Aluminum Alloy Via Friction Stir Processing Post-Treatment and High Temperature Aging Treatment

SSRN

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SSRN 2023年

作者： Cui, Jiayuan Guo, Xinpeng Hao, Shuai Guo, Xuming Xu, Rongzheng School of Materials Science and Engineering Shenyang Aerospace University Shenyang110136 China School of Mechanical Materials and Mechatronics and Biomedical Engineering University of Wollongong WollongongNSW2522 Australia

In this study, the high strength-ductility properties of wire-arc additive manufactured (WAAM) Al-Mg-Sc aluminum alloy were achieved by friction stir processing post-treatment (FSPPT) and high temperature aging treatment (HTAT). The FSPPT significantly refined the microstructure and eliminated porosity defects, which the average grain size was about 2.40 μm in stirred zone (SZ). There was no obvious growth in grain size after HTAT and the average grain size was about 2.74 μm in SZ. Many fine secondary Al3(Sc,Zr) phases were precipitated. As compared to WAAM sample, the average ultimate tensile strength (UTS), yield strength (YS) and elongation (EL) of FSPPT+HTAT sample increased by 57.9%, 54.7% and 205.9%, respectively. © 2023, The Authors. All rights reserved.

关键词： Aluminum alloys

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Thermoelectrically Elevated Hydrogel Evaporation for Personal Cooling under Extreme Heat

arXiv

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arXiv 2025年

作者： Pei, Yu Feng, Tianshi Chambers, Robert Cai, Shengqiang Chen, Renkun Department of Mechanical and Aerospace Engineering University of California San Diego 9500 Gilman Drive La Jolla CA92093 United States Materials Science and Engineering Program University of California San Diego 9500 Gilman Drive La Jolla CA92093 United States

Extreme heat events with wet-bulb temperatures (WBT) above 35°C pose serious risks to human survival, and conventional hydrogel evaporative cooling alone may not provide sufficient relief as it must be maintained at a sufficiently high temperature to achieve effective evaporation in hot, humid conditions. This study integrates thermoelectric devices (TEDs) with hydrogels to create an effective personal cooling solution. TEDs pump heat away from the skin to maintain comfort while simultaneously increasing the hydrogel’s temperature to enhance evaporation. This hybrid system outperforms TEDs or hydrogel alone in extreme conditions (temperature up to 55°C and relative humidity up to 88%, with WBT > 35°C) and can operate for over six hours with a manageable hydrogel and battery weight. The active temperature control of TEDs allows adaptation to changing thermal loads and environments. These results demonstrate the potential of hybrid evaporative and thermoelectric cooling as an efficient, adaptable, and sustainable personal cooling solution to combat extreme heat. Copyright © 2025, The Authors. All rights reserved.

关键词： Evaporative cooling systems

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Ceramic particles reinforced copper matrix composites manufactured by advanced powder metallurgy:preparation, performance, and mechanisms

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International Journal of Extreme Manufacturing 2023年第3期5卷 200-234页

作者： Yi-Fan Yan Shu-Qing Kou Hong-Yu Yang Shi-Li Shu Feng Qiu Qi-Chuan Jiang Lai-Chang Zhang State Key Laboratory of Automotive Simulation and Control Jilin UniversityRenmin StreetNo.5988ChangchunJilin Province 130025People’s Republic of China Key Laboratory of Automobile Materials Ministry of Education and Department of Materials Science and EngineeringJilin UniversityRenminStreetNo.5988ChangchunJilin Province 130025People’s Republic of China School of Materials Science and Engineering Jiangsu University of Science and TechnologyJilin Province 130025People’s Republic of China School of Mechanical and Aerospace Engineering Jilin University270 Joondalup DriveJoondalupPerthWestern Australia 6027Australia Centre for Advanced Materials and Manufacturing School of EngineeringEdith Cowan UniversityZhenjiang 212003People’s Republic of China

Copper matrix composites doped with ceramic particles are known to effectively enhance the mechanical properties,thermal expansion behavior and high-temperature stability of copper while maintaining high thermal and electrical *** greatly expands the applications of copper as a functional material in thermal and conductive components,including electronic packaging materials and heat sinks,brushes,integrated circuit lead *** far,endeavors have been focusing on how to choose suitable ceramic components and fully exert strengthening effect of ceramic particles in the copper *** article reviews and analyzes the effects of preparation techniques and the characteristics of ceramic particles,including ceramic particle content,size,morphology and interfacial bonding,on the diathermancy,electrical conductivity and mechanical behavior of copper matrix *** corresponding models and influencing mechanisms are also elaborated in *** review contributes to a deep understanding of the strengthening mechanisms and microstructural regulation of ceramic particle reinforced copper matrix *** more precise design and manipulation of composite microstructure,the comprehensive properties could be further improved to meet the growing demands of copper matrix composites in a wide range of application fields.

关键词： copper matrix composites advanced powder metallurgy model prediction particle characteristics strengthening mechanism

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Development and Fabrication of Biocompatible Ti-Based Bulk Metallic Glass Matrix Composites for Additive Manufacturing

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materials 2023年第17期16卷 5935-5935页

作者： Chen, Po-Sung Tsai, Pei-Hua Li, Tsung-Hsiung Jang, Jason Shian-Ching Huang, Jacob Chih-Ching Lin, Che-Hsin Pan, Cheng-Tang Lin, Hsuan-Kai Institute of Materials Science and Engineering National Central University Taoyuan32001 Taiwan Department of Mechanical Engineering National Central University Taoyuan32001 Taiwan Department of Materials and Optoelectronic Materials National Sun Yat-Sen University Kaohsiung80424 Taiwan Department of Mechanical and Electro-Mechanical Engineering National Sun Yat-Sen University Kaohsiung80424 Taiwan Department of Materials Engineering National Pingtung University of Science and Technology Pingtung91201 Taiwan

Ti-based metallic glasses have a high potential for implant applications. The feasibility of a new biocompatible Ti-based bulk metallic glass composite for selective laser melting (SLM) had been examined. Therefore, it is necessary to design a high-glass-forming-ability Ti-based metallic glass (∆Tx = 81 K, γ = 0.427, γm = 0.763), to fabricate a partial glass-formable spherical powder (the volume fraction of the amorphous phase in the atomized Ti-based powders being 73% [size 42Zr35Si5Co12.5Sn2.5Ta3 bulk metallic glass composite was successfully fabricated through SLM. This study demonstrates that the TiZrSiCoSnTa system constitutes a promising basis for the additive manufacturing process in terms of preparing biocompatible metallic glass composites into complicated graded foam shapes. © 2023 by the authors.

关键词： Selective laser melting

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A novel core-shell rifampicin/isoniazid electrospun nanofiber membrane for long time drug dissolution

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Engineered Regeneration 2022年第1期3卷 73-79页

作者： Chenxi Li Yueqi Liu Ming Wei Jun Liu Xiaomin Yu Ping Hu Yong Liu Beijing Key Laboratory of Advanced Functional Polymer Composites College of Materials Science and EngineeringBeijing University of Chemical TechnologyBeijing 100029China College of Mechanical and Electric Engineering Beijing University of Chemical TechnologyBeijing 100029China Department of Infectious Disease and Clinical Microbiology Beijing Chaoyang HospitalCapital Medical UniversityBeijing 100020China Department of Chemical Engineering Tsinghua UniversityBeijing 100084China

Rifampicin(RIF)and isoniazid(INH)are commonly applied jointly in clinical to improve the treatment efficacy of *** to the metabolism of the kidneys,most of RIF and INH would be excreted by human bodies after reaching a high drug concentration,which causes serious waste of drugs and does harm to our *** this study,polylactic acid(PLLA)was chosen as the carrier to prepare core-shell drug-loaded nanofibers with RIF in the shell and INH in the core by coaxial *** results showed that the average diameter of the core-shell drug-loaded fibers with an obvious core-shell structure was about 650 *** of RIF and INH in the fibers became amorphous;the rest maintained *** combination of PLLA and RIF made the fibers obvious hydrophobic and exhibited a slowly phased sustained-dissolve property during in vitro dissolution *** in vitro antibacterial experiments confirmed that the core-shell drug-loaded nanofibers had a favorite inhibitory effect on Staphylococcus aureus,which endowed practical medical value to the *** core-shell drug-loaded nanofibers effectively separated RIF and INH,preventing the degradation of RIF caused by the direct contact of the two *** slow-dissolve characteristics can maintain a relatively stable drug concentration and avoid the damage to the human body caused by the quick dissolve and rapid metabolism of *** combination with coaxial electrospinning fills the gap in the core-shell system with two drugs and has great significance in the future.

关键词： Dual drug delivery Core-shell structure Coaxial electrospinning Phased sustained-dissolve Staphylococcus aureus

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Efficient hydrogen production by microwave-assisted catalysis for glycerol-water solutions via NiO/zeolite-CaO catalyst

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South African Journal of Chemical engineering 2022年 41卷 43-50页

作者： Husin, Husni Erdiwansyah, Erdiwansyah Ahmadi, Ahmadi Nasution, Fahrizal Rinaldi, Wahyu Abnisa, Faisal Mamat, Rizalman Reaction Engineering and Catalysis Laboratory Department of Chemical Engineering Faculty of Engineering Universitas Syiah Kuala Jl. Tgk Syech Abdurrauf No.7 Darussalam Banda Aceh 23111 Indonesia Doctoral Program School of Engineering Universitas Syiah Kuala Darussalam Banda Aceh 23111 Indonesia Department of Chemical and Materials Engineering Faculty of Engineering King Abdulaziz University Rabigh 21911 Saudi Arabia Mechanical Engineering Universiti Malaysia Pahang Pahang Pekan 26600 Malaysia Faculty of Engineering Universitas Serambi Mekkah Banda Aceh 23245 Indonesia

Hydrogen from glycerol is one of the most potent green energy sources to replace fossil fuels. Thus, converting a glycerol solution to hydrogen through microwave-assisted catalysis is continuously gaining interest from researchers worldwide. The research aim was to combine NiO/zeolite and CaO for efficient hydrogen production from glycerol-water solution via microwave-assisted. The BET, XRD, and TEM were applied to characterize the properties of the NiO/zeolite-CaO catalyst. The influence of CaO content on NiO/zeolite (NiO/zeolite-CaO) catalyst, and microwave power on glycerol-water decomposition into hydrogen were investigated systematically. The catalytic performance for hydrogen production from glycerol-water solution was conducted in a fixed bed quartz-tube flow reactor via microwave irradiation a fed flow-rate (FFR) of 0.5 ml/min. Several characteristics, such as heating rate of 300–600 W, have been studied, CaO content of 10 wt.%, 30 wt.%, 40 wt.%, 50 wt.%, 60 wt.%, and 100 wt.%, respectively. The combined utilization of NiO/zeolite and CaO was efficient in obtaining more hydrogen production. Furthermore, the maximum conversion was found to be around 98.8%, while the highest hydrogen purity was found to be up to 96.6% when 20 wt.% NiO was used as an active site on natural zeolite and 50 wt.% CaO was used. © 2022 The Authors

关键词： Calcium oxide Hydrogen production Microwave irradiation Nickel

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