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Designing of anisotropic gradient surfaces for directional liquid transport:Fundamentals,construction,and applications

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The Innovation 2023年第6期4卷 115-131页

作者： lanlan hou Xiaofei Liu Xinran Ge Rongjun Hu Zhimin Cui Nu WangYong Zhao Key Laboratory of Bioinspired Smart Interfacial Science and Technology of Minitry of Education Beijing Key Laboratory of Bioinspired Energy Materials and DevicesSchool of ChemistryBeijing Advanced Innovation Center for Biomedical EngineeringBeihang UniversityBeijing 100191China School of Printing and Packaging Engineer Beijing Institute of Graphic CommunicationBeiing 102600China Key Laboratory of Photochemical Conversion and Optoelectronic Materials Technical Institute of Physics and ChemistryChinese Academy of SciencesBejjing 100190China Institute of Applied Chemistry Jiangxi Academy of SciencesNanchang 330096China

Many biological surfaces are capable of transporting liquids in a directional manner without energy *** by nature,constructing asymmetric gradient surfaces to achieve desired droplet transport,such as a liquid diode,brings an incredibly valuable and promising area of research with a wide range of *** by advances in nano-technology and manufacturing techniques,biomimetics has emerged as a promising avenue for engineering various types of anisotropic material *** the past few decades,this approach has yielded significant progressin both fundamental understanding and practical *** studies revealed that the heterogeneous composition and topography mainly govern the wetting mechanisms and dynamics behavior of droplets,including the interdisciplinary aspects of materials,chemistry,and *** this review,we provide a concise overview of various biological surfaces that exhibit anisotropic droplet *** discussed the theoretical foundations and mechanisms of droplet motion on designed surfaces and reviewed recent research advances in droplet directional transport on designed plane surfaces and Janus *** liquid-diode materials yield diverse promising applications,involving droplet collection,liquid separation and delivery,functional textiles,and biomedical *** also discuss the recent challenges and ongoing approaches to enhance the functionality and application performance of anisotropic materials.

关键词： anisotropic directional gradient

Bioinspired membranes for multi-phase liquid and molecule separation

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Science China Chemistry 2019年第1期62卷 14-23页

作者： Jingchong Liu Zhimin Cui lanlan hou Dianming Li Yuan Gao Li Shuai Jing Liu Jian Jin Nü Wang Yong Zhao Key Laboratory of Bioinspired Smart Interfacial Science and Technology of Ministry of Education Beijing Key Laboratory of Bioinspired Energy Materials and Devices School of Chemistry Beijing Advanced Innovation Center for Biomedical Engineering Beihang University i-Lab CAS Center for Excellence in Nanoscience and CAS Key Laboratory of Nano-Bio Interface Suzhou Institute of Nano-Tech and Nano-Bionics Chinese Academy of Sciences

Water pollution is a serious problem around the world. It causes the lack of clean drinking water and brings risks to human *** technology has become a competitive candidate to treat the contaminated wastewater due to its high separation efficiency and low energy consumption. In this review, we introduce the recent development of several kinds of bioinspired separation membranes, involving the membrane design and applications. We emphasize the multi-phase liquid separation membranes inspired from nature with special wettability applied for oil/water separation, organic liquids mixture separation, and emulsion separation. After separating multi-phase liquids using these membranes, small molecule pollutants still exist in singlephase liquid. Therefore, we also expand the scope to small molecule-scale separation membranes, such as the nacre-like graphene oxide separation membrane and other nanofiltration membranes. Summary and outlook concerning the future development of separation membranes are also introduced briefly.

关键词： bioinspired superhydrophobic superwettability nanofibers separation membrane

Electrospinning Janus Nanofibrous Membrane for Unidirectional Liquid Penetration and Its Applications

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Chemical Research in Chinese Universities 2021年第3期37卷 337-354页

作者： hou lanlan LIU Jingchong LI Dianming GAO Yuan WANG Yaqiong HU Rongjun REN Wen XIE Shuixiang CUI Zhimin WANG Nü State Key Laboratory of Petroleum Pollution Control CNPC Research Institute of Safety and Environmental TechnologyBeijing102206P.R.China Key Laboratory of Bioinspired Smart Interfacial Science and Technology of Ministry of Education Beijing Key Laboratory of Bioinspired Energy Materials and DevicesSchool of ChemistryBeijing Advanced Innovation Center for Biomedical EngineeringBeihang UniversityBeijing100191P.R.China

Janus membrane with opposite wettability on its two sides has witnessed an explosion of interest in the field of liquid spontaneous and directional transport for their promising *** advances in fabrication technology and natural bionics have brought remarkable progress for the development of Janus *** the exciting progress,the micro/nanofabrication technique of electrospinning shows advantages in constructing thin porous fibrous membrane materials with controllable surface wettability and hierarchical ***,a brief review of bioinspired Janus membrane for unidirectional liquid penetration fabricated by electrospinning is presented,and the underlying scientific mechanism is discussed with an emphasis on the materials design involving asymmetric surface wettability and micro-topology *** overview of recent emerging applications is also reviewed,with special attentions to liquid separation,water collection,distillation,and smart textile,*** researchers keep to develop more efficient strategies on designing new Janus membrane with higher performances,it has become increasingly important to understand the mechanism of liquid moving dynamics at the asymmetric interface in order to better recognize the scientific limitations currently hindering the field *** last,the challenges currently faced and possible strategies on developing new Janus membranes for optimization and engineering in the future are proposed.

关键词： Electrospinning Nanofiber Janus membrane Unidirectional penetration Wettability gradient

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喷墨打印技术在印刷显示制造中的应用

包装工程 2024年第19期45卷 299-309页

作者：王雨欣刘江浩王卉张婉齐英群侯兰兰乔云徐英杰黄蓓青北京印刷学院印刷与包装工程学院北京102600

目的为深入了解喷墨打印技术在显示器件制造中发挥的作用,开拓该印刷技术的应用领域和场景,加快推进喷墨打印大尺寸显示屏的商业化应用和工业化生产。方法分析显示器件制造中现有工艺的不足,阐述喷墨打印技术的原理及技术优势,结合大量... 详细信息

目的为深入了解喷墨打印技术在显示器件制造中发挥的作用,开拓该印刷技术的应用领域和场景,加快推进喷墨打印大尺寸显示屏的商业化应用和工业化生产。方法分析显示器件制造中现有工艺的不足,阐述喷墨打印技术的原理及技术优势,结合大量研究实例和科研成果,进一步说明该技术在显示器件,尤其是有机发光二极管(Organic Light-Emitting Diode,OLED)和量子点发光二极管(Quantum Dot Light Emitting Diode,QLED)制造中的应用和作用,最后结合研究现状总结目前的发展瓶颈,指出解决方向。结论喷墨打印技术在印刷显示制造中发挥出独特优势,具有广泛的适用性和巨大的应用价值,面向产业化生产的道路虽有挑战但前景可期。

关键词：喷墨印刷印刷显示有机发光二极管(OLED) 量子点发光二极管(QLED)

Research on improving the system of account rate in occupational pension

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International English Education Research 2015年第9期 73-75页

作者： hou lanlan Liu Tianyuan Shanghai University of Engineering Science Shanghai 201620 China

In the reform of government organizations and institutions of China, we put forward the establishment of personal account system in occupational pension, and the introduction of the ＂account＂ management model of the non real account accumulation. This paper analyzes the current situation of personal accounts in our country, and puts forward that the account rate of bank deposit can not resist inflation, and can not reflect the real return rate of China＇s pension funds, which is not conducive to the preservation and appreciation of personal account funds. On the basis of the above, the paper puts forward that the account rate should not only consider the level of economic development and inflation, but also to adapt to the financial payment ability, and establish the personal account risk reserve fund system and other improvement measures, and strive to achieve the sustainable development of the personal account system.

关键词： occupational pension personal accounts account rate

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GTF发动机设计及动力学问题研究综述

机械工程学报 2019年第13期55卷 53-63页

作者：曹树谦侯兰兰天津大学力学系天津300354 天津市非线性动力学与控制重点实验室天津300354

齿轮传动涡扇(Geared turbofan,GTF)发动机作为绿色航空动力的代表机型,在降低耗油率、噪声、减少污染物排放等诸多方面具有突出优势。以完善我国关于GTF发动机知识参考、引起国内学者关注该技术研究为目的,详细介绍了GTF发动机的发展... 详细信息

齿轮传动涡扇(Geared turbofan,GTF)发动机作为绿色航空动力的代表机型,在降低耗油率、噪声、减少污染物排放等诸多方面具有突出优势。以完善我国关于GTF发动机知识参考、引起国内学者关注该技术研究为目的,详细介绍了GTF发动机的发展背景和研究现状,以求抛砖引玉之效。重点针对其关键部件-行星齿轮传动系统的动力学问题,包括系统建模、动特性及非线性响应、功率均载、试验及故障模拟方面,做了详细评述,同时基于GTF发动机结构提出其可能面临的故障问题,最后总结了技术难点概况,并指出需要进一步研究的问题。

关键词：齿轮传动涡扇发动机设计行星传动系统动力学特性

Progress of Fabrication and Applications of Electrospun Hierarchically Porous Nanofibers

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Advanced Fiber Materials 2022年第4期4卷 604-630页

作者： Ranran Liu lanlan hou Guichu Yue Huaike Li Jiesan Zhang Jing Liu Beibei Miao Nü Wang Jie Bai Zhimin Cui Tianxi Liu Yong Zhao Key Laboratory of Bioinspired Smart Interfacial Science and Technology of Ministry of Education School of ChemistryBeihang UniversityBeijing 100191People’s Republic of China State Key Laboratory for Modification of Chemical Fibers and Polymer Materials Donghua UniversityShanghai 201620People’s Republic of China Inner Mongolia Key Laboratory of Industrial Catalysis Chemical Engineering CollegeInner Mongolia University of TechnologyHohhot 010051People’s Republic of China

In recent years,electrospun nanofibers have attracted great attention for their facile adjustable structure,morphology feature and chemical ***,significant interest has been devoted to the development of electrospun nanofibers with multiscale pores from micropores and mesopores to macropores,owing to their large specific surface area,hierarchical pore structures,abundant active sites and many other unique properties and *** review presents an overview on the design strategies,preparation methods,physical properties and applications of electrospun hierarchical porous *** first,electrospinning fabrication of nanofibers with different types of pores including micropores,mesopores,macropores and hierarchical pores are *** the structures,properties of electrospun porous nanofibers and their applications in several important areas,such as catalysis,energy storage,adsorption and separation,heat insulation and flame retardant,sound absorption and wave absorption,sensor and biomedical are *** last,challenges and potential opportunities of electrospun porous nanofibers in the future are highlighted.

关键词： Electrospinning Porous nanofibers Hierarchical structure Catalysis Energy storage

Fabrication and Applications of Multi-Fluidic Electrospinning Multi-Structure Hollow and Core–Shell Nanofibers

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Engineering 2022年第6期8卷 116-127页

作者： Dianming Li Guichu Yue Shuai Li Jing Liu Huaike Li Yuan Gao Jingchong Liu lanlan hou Xiaofeng Liu Zhimin Cui Nü Wang Jie Bai Yong Zhao Key Laboratory of Bioinspired Smart Interfacial Science and Technology of Ministry of Education School of ChemistryBeihang UniversityBeijing 100191China School of Materials Science and Engineering Lanzhou Jiaotong UniversityLanzhou 730070China College of Chemical Engineering Inner Mongolia University of TechnologyHohhot 010051China

Recently,electrospinning(ESP)has been widely used as a synthetic technology to prepare nanofibers with unique properties from various raw *** applications of functionalized nanofibers have gradually developed into one of the most exciting topics in the field of materials *** this review,we focus on the preparation of multi-structure fibrous nanomaterials by means of multi-fluidic ESP and review the applications of multi-structure nanofibers in energy,catalysis,and ***,the working principle and process of ESP are introduced;then,we demonstrate how the microfluidic concept is com-bined with the ESP technique to the multi-fluidic ESP ***,the applications of multi-structure nanofibers in energy(Li^(+)/Na^(+)batteries and Li–S batteries),hetero-catalysis,and biology(drug delivery and tissue engineering)are ***,challenges and future directions in this emerging field are summarized.

关键词： Electrospinning Microfluidics Multi-fluidic Hollow structure Nanofibers

Okra‑Like Multichannel TiO@NC Fibers Membrane with Spatial and Chemical Restriction on Shuttle‑Effect for Lithium–Sulfur Batteries

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Advanced Fiber Materials 2023年第1期5卷 252-265页

作者： Shuai Li Jingchong Liu Linlin Ma Li‑Juan Yu lanlan hou Dianming Li Songwei Gao Guichu Yue Zhimin Cui NüWang Xiaoxian Zhao Yong Zhao Key Laboratory of Bio‑Inspired Smart Interfacial Science and Technology of Ministry of Education Beijing Key Laboratory of Bioinspired Energy Materials and DevicesSchool of ChemistryBeijing Advanced Innovation Center for Biomedical EngineeringBeihang UniversityBeijing 100191People’s Republic of China Beijing Key Laboratory for Bioengineering and Sensing Technology Daxing Research InstituteSchool of Chemistry and Biological EngineeringUniversity of Science and Technology BeijingBeijing 100083People’s Republic of China Department of Chemistry College of ScienceHebei Agricultural UniversityBaoding 071001People’s Republic of China Research School of Chemistry Australian National UniversityAustralian Capital TerritoryCanberra 2601Australia School of Materials Science and Engineering Lanzhou Jiaotong UniversityLanzhou 730070China

It is especially important to coordinately design the structure and composition of the host in lithium–sulfur batteries(LSBs)for improving its physicochemical adsorption and conversion of lithium polysulfide,which can alleviate the harmful shuttle ***,a self-supporting multichannel nitrogen-doped carbon fibers membrane embedded with TiO nanoparticles(TiO@NC)was constructed as the electrode for *** inner channels and the embedded TiO nanoparticles offer spatial confinement and chemical binding for polysulfides,***,the TiO nanoparticles have abundant oxygen vacancies that promote the conversion of *** addition,the nitrogen-doped carbon skeleton can not only serve as highly conductive transportation paths for electrons,but also integrate with the inner channels to sustain the morphology and bear volume expansion during cycling ***,the fabricated self-supporting quadruple-channel TiO@NC ultrathin fibers electrode exhibits a high initial specific capacity of 1342.8 mAh g^(-1)at 0.5 C and high-rate capability of 505.8 mAh g^(-1)at 4.0 *** addition,it maintains 696.0 mAh g^(-1)over 500 cycles with only 0.059%capacity decay per cycle at the high current density of 2.0 *** multichannel configuration combined with TiO nanoparticles provides a synergetic design strategy for fabricating high-performance electrodes in LSBs.

关键词： Multichannel Electrospinning Hierarchical structure Spatial confinement Chemical binding Lithium–sulfur battery