检索结果-南通市图书馆

Generating micro/nanostructures on magnesium alloy surface using ultraprecision diamond surface texturing process

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Magnesium and Alloys 2023年第4期11卷 1472-1483页

作者： Hanheng Du Mengnan Jiang Zuankai Wang Zhiwei Zhu Suet To State Key Laboratory of Ultra-Precision Machining Technology Department of Industrial and Systems EngineeringThe Hong Kong Polytechnic UniversityHong KongChina Department of Mechanical Engineering City University of Hong KongHong KongChina School of Mechanical Engineering Nanjing University of Science and TechnologyNanjingChina

The lightness and high strength-to-weight ratio of the magnesium alloy have attracted more interest in various ***,micro/nanostructure generation on their surfaces remains a challenge due to the flammability and *** by this,this study proposed a machining process,named the ultraprecision diamond surface texturing process,to machine the micro/nanostructures on magnesium alloy *** results showed the various microstructures and sawtooth-shaped nanostructures were successfully generated on the AZ31B magnesium alloy surfaces,demonstrating the effectiveness of this proposed machining ***,sawtooth-shaped nanostructures had the function of inducing the optical effect and generating different colors on workpiece *** colorful letter and colorful flower image were clearly viewed on magnesium alloy *** corresponding cutting force,chip morphology,and tool wear were systematically investigated to understand the machining mechanism of micro/nanostructures on magnesium alloy *** proposed machining process can further improve the performances of the magnesium alloy and extend its functions to other fields,such as optics.

关键词： Magnesium alloy micro/nanostructure Ultraprecision diamond surface texturing Cutting force Chip morphology Structural color

Superhydrophobic micro/nanostructured Copper Mesh with Self-Cleaning Property for E ective Oil/Water Separation

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Chemical Physics 2019年第5期32卷 635-642页

作者： Tai-heng Zhang Tao Yan Guo-qing Zhao Wenjihao Hu Fei-peng Jiao Department of Chemistry and Chemical Engineering Central South University Changsha 410083 China Department of Chemical and Material Engineering University of Alberta Edmonton T5K1B9 Canada

In this work, a simple method was carried out to successfully fabricate superoleophilic and superhydrophobic N-dodecyltrimethoxysilane@tungsten trioxide coated copper mesh. The as-fabricated copper mesh displayed prominent superoleophilicity and superhydrophobicity with a huge water contact angle about 154.39° and oil contact angle near 0° Moreover, the coated copper mesh showed high separation efficiency approximately 99.3%, and huge water flux about 9962.3 L·h^-1·m-2, which could be used to separate various organic solvents/ water mixtures. Furthermore, the coated copper mesh showed favorable stability that the separation efficiency remained above 90% after 10 separation cycles. Benefiting from the excellent photocatalytic degradation ability of tungsten trioxide, the coated copper mesh possessed the self-cleaning capacity. Therefore, the mesh contaminated with lubricating oil could regain superhydrophobic property, and this property of self-cleaning permitted that the fabricated copper mesh could be repeatedly used for oil and water separation.

关键词： Superhydrophobicity micro/nanostructure Tungsten trioxide Self-cleaning Oil/water separation

Spectral emittance measurements of micro/nanostructures in energy conversion:a review

在线全文

学校读者我要写书评

暂无评论

Frontiers in Energy 2020年第3期14卷 482-509页

作者： Shiquan SHAN Chuyang CHEN Peter G.LOUTZENHISER Devesh RANJAN Zhijun ZHOU Zhuomin M.ZHANG State Key Laboratory of Clean Energy Utilization Zhejiang UniversityHangzhou 310027China George W.Woodruff School of Mechanical Engineering Georgia Institute of TechnologyAtlanta GA 30332USA

micro/nanostructures play a key role in tuning the radiative properties of materials and have been applied to high-temperature energy conversion systems for improved *** the various radiative properties,spectral emittance is of integral importance for the design and analysis of materials that function as radiative absorbers or *** paper presents an overview of the spectral emittance measurement techniques using both the direct and indirect ***,several micro/nanostructures are also introduced,and a special emphasis is placed on the emissometers developed for characterizing engineered micro/nanostructures in high-temperature applications(e.g.,solar energy conversion and thermophotovoltaic devices).In addition,both experimental facilities and measured results for different materials are ***,future prospects in developing instrumentation and micro/nanostructured surfaces for practical applications are also *** paper provides a comprehensive source of information for the application of micro/nanostructures in high-temperature energy conversion engineering.

关键词： concentrating solar power(CSP) emittance measurements high temperature micro/nanostructure selective absorber selective emitter thermophotovoltaics(TPV)

A review of the techniques for the mold manufacturing of micro/nanostructures for precision glass molding

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

International Journal of Extreme Manufacturing 2021年第4期3卷 23-54页

作者： Tianfeng Zhou Yupeng He Tianxing Wang Zhanchen Zhu Ruzhen Xu Qian Yu Bin Zhao Wenxiang Zhao Peng Liu Xibin Wang School of Mechanical Engineering Beijing Institute of TechnologyBeijing 100081People’s Republic of China Beijing Institute of Technology Chongqing Innovation Center Chongqing 401120People’s Republic of China

micro/nanostructured components play an important role in micro-optics and optical engineering,tribology and surface engineering,and biological and biomedical engineering,among other *** glass molding technology is the most efficient method of manufacturing micro/nanostructured glass components,the premise of which is meld manufacturing with complementary micro/*** mold manufacturing methods have been developed to fabricate extremely small and high-quality micro/nanostructures to satisfy the demands of functional micro/nanostructured glass components for various ***,the service performance of the mold should also be carefully *** paper reviews a variety of technologies for manufacturing micro/nanostructured *** authors begin with an introduction of the extreme requirements of mold *** following section provides a detailed survey of the existing micro/nanostructured mold manufacturing techniques and their corresponding mold materials,including nonmechanical and mechanical *** paper concludes with a detailed discussion of the authors recent research on nickel-phosphorus(Ni-P)mold manufacturing and its service performance.

关键词： precision glass molding mold manufacturing micro/nanostructure mold material extreme features

microsized SnS/Few-Layer Graphene Composite with Interconnected Nanosized Building Blocks for Superior Volumetric Lithium and Sodium Storage

在线全文

学校读者我要写书评

暂无评论

Energy & Environmental Materials 2021年第2期4卷 229-238页

作者： Deliang Cheng Lichun Yang Renzong Hu Jiangwen Liu Min Zhu Guangdong Provincial Key Laboratory of Advanced Energy Storage Materials School of Materials Science and EngineeringSouth China University of TechnologyGuangzhou 510640China Institute of Advanced Materials Jiangxi Normal UniversityNanchang

To develop anode materials with superior volumetric storage is crucial for practical application of lithium/sodium-ion ***,we have developed a micro/nanostructured Sn S/few-layer graphene(Sn S/FLG)composite by facile scalable plasma *** the hybrid,SnS nanoparticles are tightly supported by FLG,forming nanosized primary particles as building blocks and assembling to microsized secondary *** this unique micro/nanostructure,the Sn S/FLG composite possesses a high tap density of 1.98 g cm^(-3)and thus ensures a high volumetric *** combination of Sn S nanoparticles and FLG nanosheets can not only enhance the overall electrical conductivity and facilitate the ion diffusion greatly,but alleviate the large volume expansion of Sn S effectively and maintain the electrode integrity during ***,the densely compacted Sn S/FLG composite exhibits superior volumetric lithium and sodium storage,including high volumetric capacities of 1926.5/1051.4 m Ah cm^(-3)at 0.2 A g^(-1),and high retained capacities of 1754.3/760.3 m Ah cm^(-3)after 500cycles at 1.0 A g^(-1).With superior volumetric storage performance and facile scalable synthesis,the Sn S/FLG composite can be a promising anode for practical batteries application.

关键词： micro/nanostructure SnS nanoparticle few-layer graphene volumetric storage anode

Interfacial induction and regulation for microscale crystallization process:a critical review

在线全文

学校读者我要写书评

暂无评论

Frontiers of Chemical Science and Engineering 2022年第6期16卷 838-853页

作者： Mengyuan Wu Zhijie Yuan Yuchao Niu Yingshuang Meng Gaohong He Xiaobin Jiang State Key Laboratory of Fine Chemicals School of Chemical EngineeringDalian University of TechnologyDalian 116024China

microscale crystallization is at the frontier of chemical engineering,material science,and biochemical research and is affected by many *** precise regulation and control of microscale crystal processes is still a major *** the heterogeneous induced nucleation process,the chemical and micro/nanostructural characteristics of the interface play a dominant *** crystal products can be obtained by modifying the interface characteristics,which has been proven to be a promising *** review illustrates the application of interface properties,including chemical characteristics(hydropho-bicity and functional groups)and the morphology of micro/nanostructures(rough structure and cavities,pore shape and pore size,surface porosity,channels),in various microscale crystallization controls and process ***,possible future research and development directions are outlined to emphasize the importance of interfacial crystallization control and regulation for crystal engineering.

关键词： interfacial crystallization heterogeneous nucleation supersaturation micro/nanostructure process control and intensification

Three-dimensional silk fibroin microsphere-nanofiber scaffolds for vascular tissue engineering

在线全文

学校读者我要写书评

暂无评论

Medicine in Novel Technology and Devices 2021年第1期9卷 52-59页

作者： Qiang Liu Guoliang Ying Nan Jiang Ali KYetisen Danyu Yao Xiaoying Xie Yubo Fan Haifeng Liu Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education School of Biological Science and Medical EngineeringBeijing Advanced Innovation Centre for Biomedical EngineeringBeihang UniversityBeijing100191People’s Republic of China Department of Chemistry Stanford UniversityCA94305USA School of Materials Science and Engineering Wuhan Institute of TechnologyWuhan430205People’s Republic of China Division of Engineering in Medicine Department of MedicineBrigham and Women’s HospitalHarvard Medical SchoolCambridgeMA02139USA School of Engineering and Applied Sciences Harvard UniversityCambridgeMA02138USA Department of Chemical Engineering Imperial College LondonLondonSW72AZUK School of Life Information Science and Instrument Engineering Hangzhou Dianzi UniversityHangzhou310018Zhejiang ProvincePeople’s Republic of China

A significant limitation in the engineering of artificial small-diameter vascular scaffolds is that the number of endothelial cells(ECs)is not sufficient to generate a confluent coverage of the vascular scaffolds,so that the surfaces of vascular scaffolds form thrombus via platelet adhesion and *** decrease relies on three-dimensional(3D)scaffolds to mimic the natural extracellular matrix(ECM)as templates to regulate cell behavior and facilitate tissue ***,we developed 3D scaffolds consisting of silk fibroin(SF)nanofibers and homogeneous microspheres by electrospinning and *** nanofibers with diameters ranging from 250 to 350 nm doped with microspheres(2–10μm)formed bridge-shaped *** were seeded and maintained on the 3D microsphere-nanofiber scaffolds with a mean fiber diameter of 300 nm.A 10%higher ratio of cell proliferation on 3D microsphere-nanofiber SF scaffolds was noted as compared to that on microporous and sponge-like SF scaffolds with small surface network fabricated by ***,the gene transcript levels including CD146,VE-C and PECAM-1 were better preserved on 3D microsphere-nanofiber SF scaffolds than those on freeze-dried ***,the developed 3D microsphere-nanofiber structure may have a myriad of applications in vascular tissue engineering scaffolds and cardiovascular devices.

关键词： microfluidics Silk fibroin Electrospinning micro/nanostructure Tissue engineering