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Advanced Nanocomposites 2025年 2卷 108-123页

作者： Omar Faruk Abbas Ahmed Ashfaqul Hoque Khadem Lu Jia Luyi Sun Department of Materials Science and Engineering Binghamton University State University of New York at Binghamton NY 13902 USA Polymer Program Institute of Materials Science and Department of Chemical & Biomolecular Engineering University of Connecticut Storrs CT 06269 USA Department Mechanical Engineering College of Engineering Computing and Applied Science Clemson University Clemson SC 29634 USA College of Textile Engineering Taiyuan University of Technology Jinzhong Shanxi 030600 China

Thermal comfort is essential for maintaining physiological well-being, with textile materials traditionally serving as the primary medium for regulating heat exchange between the body and its environment. However, conventional textiles often fall short of maintaining optimal thermal balance. So, there is an increasing demand for advanced thermoregulation systems that can effectively reduce heat loss and enhance warmth, ensuring consistent comfort. Recent research has highlighted the promise of advanced functional materials, especially graphene and its composites, for modifying textiles to improve thermal properties. This article comprehensively reviews recent advancements in graphene-functionalized textile composites, focusing on their applications in wearable Joule heaters designed for personalized thermal comfort or thermal therapy. Various graphene-functionalized textile composites are reviewed from the perspectives of material properties, processing strategies and device fabrication methods. Key challenges and future opportunities are summarized for graphene-functionalized textile-based Joule heaters as innovative solutions in wearable thermal regulation.

关键词： Graphene Textile Composite Wearable electronics Joule heater

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An Anti-Plasma Etching Film of Y2O3 Film 10

An Anti-Plasma Etching Film of Y2O3 Film

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10th International Conference on Applied System Innovation, ICASI 2024

作者： Wei, Chia-Chih Chen, Hsuan-Jung Lee, Yi-Mu Chang, Shao-Fu Chen, Chien-Chon College of Engineering and Science Ph.D. Program in Materials and Chemical Engineering National United University Miaoli Taiwan Michigan State University Department of Chemistry MI48824 United States National United University Department of Electronic Miaoli Taiwan National United University Department of Energy Engineering Miaoli Taiwan

ISBN: (纸本)9798350394924

In this paper, we have presented our experiment results including (a) use a slowly thermal spray process deposition an yttrium oxide (Y2O3) film with thickness of $200\ \mu\mathrm{m}$ on the aluminum alloy (AA6061). The image analysis showed that the porosity of Y2O3 film can be reduced to less than 2%. The further aerosol deposition can be used filling the pores and can reduce the porosity of the film to less than 0.5%. This low-porosity Y2O3 film will be able to meet the increasingly stringent requirements for surface coating protection of semiconductor vacuum chamber. (b) Compared the corrosion characterization in 3.5 wt. % NaCl solution between naked AA6061 and AA6061 with Y2O3 coating, a high corrosion reactivity ($\mathrm{I}_{\text{corr}}=10^{-3.3}\mathrm{A}/\text{cm}^{2}$) of naked AA6061 then AA6061 with Y2O3 coating ($\mathrm{I}_{\text{corr}}=10^{-5.8}\mathrm{A}/\text{cm}^{2}$). The corrosion reactivity of AA6061 with Y2O3 is reduced by 316 times to a naked AA6061. © 2024 IEEE.

关键词： Porosity

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Design of the Continuous Gravity-Driven Multiple-Effect Thermal System (G-METS) for Efficient Low-Cost Magnesium Recycling

Design of the Continuous Gravity-Driven Multiple-Effect Ther...

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Magnesium Technology Symposium held during the 152nd TMS Annual Meeting and Exhibition, TMS 2023

作者： Sehar, Daniel Mcarthur Espinosa, Gabriel Telgerafchi, Armaghan Ehsani Chinwego, Chinenye Lynch, Keira Perrin, Benjamin Powell, Adam Materials Science and Engineering Program Department of Mechanical Engineering Worcester Polytechnic Institute WorcesterMA United States Department of Mechanical Engineering Worcester Polytechnic Institute WorcesterMA United States 100 Institute Rd WorcesterMA01609 United States

ISBN: (纸本)9783031226458

Recent global supply shortages, combined with need for light-weight structural components for efficient transportation, have led to very high prices for magnesium due to its low density and high part stiffness/weight. This study continues prior work on magnesium recycling using multiple-effect distillation with gravity as the parameter to create the pressure difference between effects, called G-METS. The long-term vision is for continuous distillation, but experiments to date have only used batch distillers with maximum rate of 1 kg/h. and minimum energy consumption of 2 kWh/kg. This study presents the design of laboratory-scale continuous distiller including a custom-made furnace to sustain a high-power density and temperature gradient for rapid boiling and efficient recovery of magnesium. © The Minerals, Metals & materials Society 2023.

关键词： Distillation

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Performance analysis of an Injera baking machine by using solar energy

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materials Today: Proceedings 2022年 56卷 3285-3293页

作者： Suresh, P. Ali, M.D. Irfan Rao, P. Govind Rudrapati, Ramesh Mechanical Engineering Department Bharat Institute of Engineering and Technology Mangalpally Telangana Sagar road Ibrahimpatnam RR Dist India Thermal & Aerospace Program School of Mechanical Chemical and Materials Engineering Adama Science and Technology Ethiopia Mechanical Engineering Department Avanthi Research and Technology Bhogapuram India School of Mechanical Industrial Engineering Bulehora University Bulehora Ethiopia

The majority of Ethiopia's population, primarily women, is susceptible to smoke inhalation during cooking, and they spend the majority of their time striving to collect firewood. Biomass deforestation for cooking harms the rural household economy and contributes to national and global environmental change, such as pollution and health issues. The effort should aim to integrate the Scheffler concentrator with a thermal storage system via the secondary solar cooking reflector in order to stimulate indoor cooking while avoiding concerns associated by carbon inhalation and deforestation. As a result, the Injera bakery system powered by solar thermal energy is born. There is a primary (Scheffler), secondary (reflective), and thermal storage device incorporated, as well as a cooking (pan) mounts. Solid works software was utilized for Scheffler focus and secondary reflector modeling and simulation. The thermal retention capacity of a storage device is determined using heating and cooling curves generated by software modeling and simulation. The findings gained would aid in the development of any comfortable indoor cooking system specifically for rural areas without a grid connection, and as a result of this study, carbon inhalation and deforestation difficulties would be mitigated. Through automation, the output rate would also increase the amount and efficiency of injera. This analysis focuses on the Injera baker concept for domestic applications. © 2021

关键词： Solar energy

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Specular inverse Faraday effect in transition metals

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Physical Review materials 2023年第12期7卷 125202-125202页

作者： Victor H. Ortiz Shashi B. Mishra Luat Vuong Sinisa Coh Richard B. Wilson Department of Mechanical Engineering and Materials Science and Engineering Program University of California Riverside 92521 CA United States

The inverse Faraday effect is an optomagnetic phenomenon that describes the ability of circularly polarized light to induce magnetism in solids. The capability of light to control magnetic order in solid state materials and devices is of interest for a variety of applications, such as magnetic recording, quantum computation, and spintronic technologies. However, significant gaps in understanding about the effect persist, such as what material properties govern the magnitude of the effect in metals. In this work, we report time-resolved measurements of the specular inverse Faraday effect in nonmagnetic metals, i.e., the magneto-optic Kerr effect induced by circularly polarized light. We measure this specular inverse Faraday effect in Cu, Pd, Pt, W, Ta, and Au at a laser wavelength of 783 nm. For Ta and W, we investigate both α and β phases. We observe that excitation of these metals with circularly polarized light induces significant circular dichroism. This nonlinear magneto-optical response to circularly polarized light is an order of magnitude larger in α-W than other metals, e.g., Pt or Au, and is greater than nearly all other reported values for the inverse Faraday effect in other materials. Our results benchmark the range of the inverse Faraday effect that can be observed in nonmagnetic metals and provide insight into what material properties govern the inverse Faraday effect in metals.

关键词： Light-induced magnetic effects Magneto-optics Ultrafast optics Magneto-optical Kerr effect Sputtering Ultrafast femtosecond pump probe

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Effect of Seal Pressure on Leak Resistance of Rigid Hot Tool Sealing Over Film Thickness Transitions in Multilaminate Films

Effect of Seal Pressure on Leak Resistance of Rigid Hot Tool...

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SPE ANTEC 2022 Conference

作者： Colvin, Flint Benatar, Avraham Plastics and Composites Joining Laboratory Welding Engineering Program Dept. of Materials Science and Engineering The Ohio State University ColumbusOH United States

In flexible packaging, film thickness transitions can be problematic regions to seal due to their propensity for leaking, as well as the high seal pressure required to create a continuous seal over the transition. A compliant anvil can be used to decrease the required seal pressure, as the hot tool will be able to contact both the thick and thin regions of the packaging, with compression of the compliant anvil. However, a compliant anvil cannot be used in a double-sided heating process. Therefore, in a double-sided heating process, high seal pressures must be utilized in order to reduce the film thickness in the thick region, to facilitate tool to film contact in the thin region. In this study, the required seal pressure needed to create continuous (non-leaking) seals over a 4-film to 8-film thickness transition was explored, with both a rigid and conformable anvil. With a rigid anvil 3.25 MPa was required to consistently create continuous seals. With a conformable anvil 0.87 MPa was required to consistently create continuous seals. © 2022 Society of Plastics Engineers. All rights reserved.

关键词： Elastomers

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Morphology-controlled porphyrin nanocrystals with enhanced photocatalytic hydrogen production

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Nano Research 2022年第6期15卷 5719-5725页

作者： Ronghui Cao Jinghan Wang Yusen Li Jiajie Sun Feng Bai School of Physics and Electronics Henan UniversityKaifeng 475004China Key Laboratory for Special Functional Materials of Ministry of Education National and Local Joint Engineering Research Center for High-efficiency Display and Lighting TechnologySchool of Materials Science and Engineeringand Collaborative Innovation Center of Nano Functional Materials and ApplicationsHenan UniversityKaifeng 475004China Academy for Advanced Interdisciplinary Studies Henan UniversityKaifeng 475004China

Molecular self-assembly is a natured-inspired strategy to integrate individual functional molecules into supramolecular nanostructured materials through noncovalent bond interactions for solar to fuel ***,the design and engineering of the morphology,size,and orderly stacking of supramolecular nanostructures remain a great *** this study,regular porphyrin nanocrystals with different orderly stacked structures are synthesized through noncovalent self-assembly of Pt(II)meso-tetra(4-carboxyphenyl)porphine(PtTCPP),using surfactants with different *** synergy of noncovalent bond interactions between porphyrin molecules,and between porphyrin molecules and surfactants resulted in different molecular packing *** to the spatial ordering of PtTCPP molecules,the different nanocrystals exhibit both collective optical properties and morphology-dependent activities in photocatalytic hydrogen *** measurements of the photodeposition of dual cocatalysts showed that the photogenerated electrons and holes selectively aggregated at different active sites,revealing separation pathways and directional transfer of photogenerated electrons and holes in the *** study provides a new strategy to exert rational control over porphyrin self-assembly nanocrystals for highly efficient water splitting.

关键词： porphyrin self-assembly morphology-dependent photocatalytic activity directional transfer photogenerated electrons and holes

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Computational Modeling of Radiation Effects in Carbon Fiber-Reinforced Polyethylene Composites 38

Computational Modeling of Radiation Effects in Carbon Fiber-...

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38th Technical Conference of the American Society for Composites, ASC 2023

作者： Li, Fuyue Woodrough, Mary Deo, Chaitanya School of Materials Science and Engineering Georgia Institute of Technology North Avenue AtlantaGA30332 United States Nuclear and Radiological Engineering Program GWW School of Mechanical Engineering Georgia Institute of Technology North Avenue AtlantaGA30332 United States

ISBN: (纸本)9781605956916

Radiation effect in carbon fiber-filled polyethylene composites are of importance in space and aircraft applications. A two-fold approach is employed to study radiation effects in carbon nanotube polyethylene as the exemplar. First, a radiation transport model is created with a single-wall carbon nanotube (SWCNT) as thin carbon slab superimposed on a slab of medium-density polyethylene matrix. Different weight fractions of SWCNT are examined and compared with an integrated model for the shielding abilities of galactic cosmic radiation. Second, molecular dynamics simulation with bond-order force field are conducted for 350 eV carbon recoil cascade simulation. Preliminary results discuss the effect of SWCNT on the radiation damage of crystalline polyethylene. Transport simulation demonstrate the efficacy of the slab model in predicting the shielding abilities and concluded that the dose increases with increasing SWCNT filler. Molecular dynamics simulations demonstrate that adding SWCNT enhances the radiation resistance with fewer free molecules produced. © 2023 by DEStech Publications, Inc. and American Society for Composites. All rights reserved.

关键词： Single-walled carbon nanotubes (SWCN)

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Chemically inducing room temperature spin-crossover in double layered magnetic refrigerants Pr1.4+xSr1.6-xMn2O7(0.0≤x≤0.5)

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Journal of materials science & Technology 2022年第29期124卷 232-242页

作者： Akshay Kumar Kavita Kumari Mohit K.Sharma Ankush Vij Shalendra Kumar Seok-Hwan Huh Bon Heun Koo Department of Materials Convergence and System Engineering Changwon National UniversityChangwonGyeongnam51140South Korea School of Material Science and Engineering Changwon National UniversityChangwonGyeongnam51140South Korea Department of Physics University of Petroleum&Energy StudiesDehradun248007India Department of Physics College of ScienceKing Faisal UniversityHofufAl-Ahsa31982Saudi Arabia

The height of total entropy(S)for a magnetic refrigerant material is essentially concerned with the magnetic and structural ***,the participation of such transitions in layered materials is not well ***,the purpose of this work is to investigate the interplay between double layer lattice with their single perovskite counterpart,to achieve optimal magnetocaloric performance.A series of self-doped Pr_(1.4+x)Sr_(1.6-x)Mn_(2)O_(7)(0.0≤x≤0.5)Ruddlesden-Popper(R-P)perovskite have been prepared through the solid-state sintering *** increasing the Pr-stoichiometry,the lattice faults have increased and the double layer lattice dramatically disintegrates into single perovskite *** to the reduction of bilayer R-P phase into single perovskite the spin crossover occurs from weak bilayer(T=304 K)interactions towards the strong three-dimensional(T=308 K)interactions *** series consistently develops thermomagnetic irreversibility in zero-field cooled(ZFC)-field cooled(FC)magnetization,which is indicative of a spin-glass *** glassy nature has been ascribed collectively to the lattice strain produced because of dislocations and to an antiferromagnetic phase segregated at the *** maximum value of temperature average entropy change(TEC)and adiabatic temperature(ΔT)has enhanced nearly by 4 folds from 0.53 J kg^(-1)K^(-1),0.59 K(for x=0.0)up to 1.85 J kg^(-1)K^(-1),10 K(for x=0.5)at 2.5 T,***,the room temperature relative cooling power has improved from 26.94 J/kg up to 77.84 J/kg with an applied field of 2.5 *** findings in this work suggest that the controlled reduction of double layer lattice into single perovskite and/or existence of both phases simultaneously in bilayer R-P manganites may be very effective in obtaining the desirable characteristics of magnetocaloric effects.

关键词： Magnetic refrigerant Bilayer manganites Magnetocaloric effect Ruddlesden-popper perovskite Relative cooling power

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Ultra-transparent nanostructured coatings via flow-induced one-step coassembly

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Nano materials science 2022年第2期4卷 97-103页

作者： Jingjing Liu Sonia E.Chavez Hao Ding Maria M.Farooqui Zaili Hou Sharon Lin Thomas D.D'Auria Julia M.Kennedy Anna Marie LaChance Luyi Sun Polymer Program Institute of Materials ScienceUniversity of ConnecticutStorrsConnecticut06269United States Department of Chemical&Biomolecular Engineering University of ConnecticutStorrsConnecticut06269United States Department of Biomedical Engineering University of ConnecticutStorrsConnecticut06269United States

Polyvinyl alcohol(PVA)/laponite(LP)nanocomposite coatings were fabricated via a facile one-step coassembly *** formed nanocoatings contain a high concentration of LP nanosheets,which can be well aligned along the substrate surface during the coassembly *** to the highly orientated structure,the flexible nanocoatings exhibit ultra-high transparency and superior mechanical properties,and can also act as excellent gas *** nanocoatings can be exceptional candidates for a variety of applications,such as food packaging.

关键词： Nanocoating Coassembly Polyvinyl alcohol Laponite

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