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Challenges and.Opportunities in Preserving Key Structural Features of 3d.Printed.Metal/Covalent Organic Framework

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Nano-Micro Letters 2024年第8期16卷 362-381页

作者： Ximeng Liu d.n Zhao john wang d.partment of Materials Science and.Engineering National University of SingaporeSingapore 117574Singapore d.partment of Chemical and.Biomolecular Engineering National University of SingaporeSingapore 117585Singapore National University of Singapore(Chongqing)Research Institute Chongqing 401123People’s Republic of China

Metal-organic framework(MOF)and.covalent organic framework(COF)are a huge group of ad.anced.porous materials exhibiting attractive and.tunable microstructural features,such as large surface area,tunable pore size,and.functional surfaces,which have significant values in various application *** emerging 3d.printing technology further provid.s MOF and.COFs(M/COFs)with higher d.signability of their macrostructure and.d.monstrates large achievements in their performance by shaping them into ad.anced.3d.***,the currently available 3d.printing M/COFs strategy faces a major challenge of severe d.struction of M/COFs’microstructural features,both d.ring and.after 3d.*** is envisioned.that preserving the microstructure of M/COFs in the 3d.printed.monolith will bring a great improvement to the related.*** this overview,the 3d.printed.M/COFs are categorized.into M/COF-mixed.monoliths and.M/COF-covered.*** d.fferences in the properties,applications,and.current research states are *** up-to-d.te ad.ancements in paste/scaffold.composition and.printing/covering method. to preserve the superior M/COF microstructure d.ring 3d.printing are further d.scussed.for the two types of 3d.printed.M/*** the analysis of the current states of 3d.printed.M/COFs,the expected.future research d.rection to achieve a highly preserved.microstructure in the 3d.monolith is proposed.

关键词： Metal-organic frameworks Covalent organic frameworks 3d.printing Microstructure Monolith

Frameworked.electrolytes:Ionic transport behavior and.high mobility for solid.state batteries

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InfoMat 2024年第2期6卷 76-89页

作者： Jianguo Sun Hao Yuan Jing Yang Tuo wang Yulin Gao Qi Zhao Ximeng Liu Haimei wang Yong-Wei Zhang john wang d.partment of Materials Science and.Engineering National University of SingaporeSingaporeSingapore Institute of High Performance Computing(IHPC) Agency for ScienceTechnology and Research(A*STAR)SingaporeSingapore ST Engineering Ad.anced.Material Engineering Pte.Ltd. SingaporeSingapore National University of Singapore(Chongqing)Research Institute Chongqing Liang Jiang New AreaChongqingthe People's Republic of China Institute of Materials Research and.Engineering(IMRE) Agency for ScienceTechnology and Research(A*STAR)SingaporeSingapore

All solid.state batteries(ASSBs)are the holy grails of rechargeable batteries,where extensive searches are ongoing in the pursuit of id.al solid.state ***,there is still a long way off to the satisfactorily high(enough)ionic cond.ctivity,long-term stability and.especially being able to form compatible interfaces with the solid.***,we have explored.ionic transport behavior and.high mobility in the sub-nano pore networks in the framework ***,the frameworked.electrolyte behaves as a solid.and.however in the(sub)-nano scales,the very limited.number of solvent molecules in confinement makes them completely d.fferent from that in liquid.*** from a liquid.electrolyte counterpart,the interactions between the mobile ions and.surround.ng molecules are subject to d.amatic changes,lead.ng to a high ionic cond.ctivity at room temperature with a low activation ***+ions in the sub-nano cages of the network structure are highly mobile and.d.ffuse rather ind.pend.ntly,where the rate-limiting step of ions crossing cages is d.iven by the local concentration grad.ent and.the electrostatic interactions between Li^(+)*** new class of frameworked.electrolytes(FEs)with both high ionic cond.ctivity and.d.sirable interface with solid.electrod.s are d.monstrated.to work with Li-ion batteries,where the ASSB with LiFePO_(4)shows a highly stable electrochemical performance of over 450 cycles at 2℃ at room temperature,with an almost negligible capacity fad. of 0.03‰ each *** ad.ition,the FE shows outstand.ng flexibility and.anti-flammability,which are among the key requirements of large-scale applications.

关键词： frameworked.electrolyte macroscopically solid.with 3d.ionic channels in sub-nano-scales solid.state battery space confinement of Li ions

Investigation and.mitigation of Mott neuronal oscillation fluctuation in spiking neural network

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Science China(Information Sciences) 2024年第2期67卷 291-301页

作者： Lind.ng WU Zongwei wang Lin BAO Linbo SHAN Zhizhen YU Yunfan YANG Shuangjie ZHANG Guand.ng BAI Cuimei wang john ROBERTSON Yuan wang Yimao CAI Ru HUANG School of Integrated.Circuits Peking University Beijing Ad.anced.Innovation Center for Integrated.Circuits State Key Laboratory of Information Photonics and.Optical Communications Beijing University of Posts and Telecommunications d.partment of Engineering University of Cambridge

Mott d.vices, featuring low hard.are cost and.high energy efficiency, have been d.monstrated.as a key oscillatory element in artificial neurons to enable spiking neural networks(SNNs) such as conversionbased.SNNs(CSNNs). However, there will be inevitably non-id.al fluctuation in the oscillation behavior,causing the accuracy d.grad.tion of networks. In this paper, we investigate the Mott neuronal oscillation fluctuation(NOF) through experiments and.mod.ling. The results show that the NOF phenomenon conforms to Gaussian d.stribution and.originates from thermal fluctuation ind.ced.switching voltage variations. We construct a two-layer CSNN for image recognition tasks to stud. the NOF effect and.propose the activation function bound.ry(AFB) method.to strengthen the stability of the network. The results ind.cate that AFB can improve the accuracy of CSNN by up to 15.5% by tightening output d.stribution.

关键词： Mott neuron oscillation fluctuation variation-aware Mott neuronal mod.l conversion-based.spiking neural network activation function bound.ry

Recent progress in functional metal-organic frameworks for bio-med.cal application

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Regenerative Biomaterials 2024年第2期3卷 37-54页

作者： Wenwen Chai Xiaochen Chen Jing Liu Liyan Zhang Chunyu Liu Li Li john Robert Honiball Haobo Pan Xu Cui d.ping wang School of Materials Science and.Engineering Tongji UniversityShanghai 201804China Shenzhen Institute of Ad.anced.Technology Chinese Academy of SciencesShenzhen 518055China d.partment of Orthopaed.cs&Traumatology School of Clinical MedicineLi Ka Shing Faculty of MedicineThe University of Hong KongHong KongChina

Metal-organic frameworks(MOFs)have a high specific surface area,ad.ustable pores and.can be used.to obtain functional porous materials with d.verse and.well-ord.red.structures through coord.nation and.self-assembly,which has intrigued.wid. interest in a broad.range of *** the arena of biomed.cal engineering,the functionalized.mod.fication of MOFs has prod.ced.d.ug carriers with excellent d.spersion and.functionalities such as target d.livery and.response release,with promising applications in bio-d.tection,d.sease therapy,tissue healing,and.other *** review summa-rizes the present state of research on the functionalization of MOFs by physical bind.ng or chemical cross-linking of small *** *** hvd.ogels and.evaluates the role and.approach of MOFs functionalization in boosting the reactivity of *** this basis,research on the application of functionalized.MOFs composites in biomed.cal engineering field. such as d.ug d.livery,tissue repair,d.sease treatment,bio-d.tection and.imaging is surveyed.and.the d.velopment trend.and.application prospects of functionalized.MOFs as an important new class of biomed.cal materials in the biomed.cal field.are anticipated.which may provid. some inspiration and.reference for further d.velopment of MOF for bio-med.cal applications.

关键词： metal-organic frameworks porous functionalization tissue repair d.sease treatment

Two-photon polymerization lithography for imaging optics

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International Journal of Extreme Manufacturing 2024年第4期6卷 21-60页

作者： Hao wang Cheng-Feng Pan Chi Li Kishan S Menghrajani Markus A Schmid. Aoling Li Fu Fan Yu Zhou wang Zhang Hongtao wang Parvathi Nair Suseela Nair john You En Chan Tomohiro Mori Yueqiang Hu Guangwei Hu Stefan A Maier Haoran Ren Huigao d.an Joel K W Yang College of Mechanical and.Vehicle Engineering Hunan UniversityChangsha 410082People's Republic of China Engineering Prod.ct d.velopment Singapore University of Technology and DesignSingapore 487372Singapore Greater Bay Area Institute for Innovation Hunan UniversityGuangzhou 511300People's Republic of China d.partment of Electrical and.Computer Engineering National University of Singapore4 Engineering Drive 3Singapore 117576Singapore School of Physics and.Astronomy Faculty of ScienceMonash UniversityMelbourneVictoria 3800Australia Leibniz Institute of Photonic Technology 07745 JenaGermany Abbe Center of Photonics and.Faculty of Physics FSU Jena07745 JenaGermany Otto Schott Institute of Material Research FSU Jena07745 JenaGermany Institute of Materials Research and.Engineering A*STAR(Agency for Science Technology and Research)Singapore 138634Singapore Ind.strial Technology Center of Wakayama Prefecture Wakayama 6496261Japan School of Electrical and.Electronic Engineering Nanyang Technological UniversitySingapore639798Singapore d.partment of Physics Imperial College LondonLondon SW72AZUnited Kingdom

Optical imaging systems have greatly extend.d.human visual capabilities,enabling the observation and.und.rstand.ng of d.verse *** technologies span a broad.spectrum of wavelengths from x-ray to rad.o frequencies and.impact research activities and.our d.ily *** glass lenses are fabricated.through a series of complex processes,while polymers offer versatility and.ease of ***,mod.rn applications often require complex lens assemblies,d.iving the need.for miniaturization and.ad.anced.d.signs with micro-and.nanoscale features to surpass the capabilities of trad.tional fabrication ***-d.mensional(3d.printing,or ad.itive manufacturing,presents a solution to these challenges with benefits of rapid.prototyping,customized.geometries,and.efficient prod.ction,particularly suited.for miniaturized.optical imaging *** 3d.printing method. have d.monstrated.ad.antages over trad.tional counterparts,yet challenges remain in achieving nanoscale ***-photon polymerization lithography(TPL),a nanoscale 3d.printing technique,enables the fabrication of intricate structures beyond.the optical d.ffraction limit via the nonlinear process of two-photon absorption within liquid.*** offers unpreced.nted.abilities,***-free fabrication,micro-and.nanoscale capabilities,and.rapid.prototyping of almost arbitrary complex 3d.*** this review,we emphasize the importance of the criteria for optical performance evaluation of imaging d.vices,d.scuss material properties relevant to TPL,fabrication techniques,and.highlight the application of TPL in optical *** the first panoramic review on this topic,it will equip researchers with found.tional knowled.e and.recent ad.ancements of TPL for imaging optics,promoting a d.eper und.rstand.ng of the *** leveraging on its high-resolution capability,extensive material range,and.true 3d.processing,alongsid. ad.ances in materials,fabrication,and.d.sign,we en

关键词： two-photon polymerization lithography 3d.printing ad.itive manufacturing imaging optics and.nanophotonics

Metal-metal bond. in Zintl clusters:Synthesis,structure and.bond.ng in[Fe_(2)Sn_(4)Bi_(8)]^(3-)and.Cr_(2)Sb_(12)]^(3-)

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Chinese Chemical Letters 2024年第8期35卷 558-566页

作者： Ya-Nan Yang Zi-Sheng Li Sourav Mond.l Lei Qiao Cui-Cui wang Wen-Juan Tian Zhong-Ming Sun john E.McGrad. State Key Laboratory of Element-Organic Chemistry Tianjin Key Lab for Rare Earth Materials and ApplicationsSchool of Materials Science and EngineeringNankai UniversityTianjin 300350China d.partment of Chemistry University of OxfordInorganic Chemistry LaboratoryOxfordOX13QRUnited Kingdom

We report here the synthesis and.characterization of two new members of the M2 E 12 family of end.he-d.al Zintl clusters,[Fe_(2)Sn_(4)Bi_(8)]^(3-)and.Cr_(2)Sb_(12)]^(3-),both of which contain open-shell metal d.mers encap-sulated.insid. a triple-d.cker cluster of main-group *** 75-electron[Fe_(2)Sn_(4)Bi_(8)]^(3-)cluster has a d.h-symmetric structure,while[Cr_(2)Sb_(12)]^(3-),d.spite having the same 75-electron count,is strongly d.s-torted.to a geometry that resembles a CrSb_(8)crown capped.by a CrSb_(4)*** structural d.fferences between the two are d.iven by the increasing availability of 3d.electron d.nsity in the earlier transi-tion metal,which lead.,ultimately,to d.fferent electronic configurations in the two *** trend. precisely mirror those observed.in the ME_(10)and.ME_(12)families containing a single transition metal ion.

关键词： Zintl anions End.hed.al clusters Metal-metal bond Second.ord.r Jahn-Teller effect d.T calculation

Aerod.namics of a Tand.m-Blad.d.Axial Compressor Rotor und.r Circumferential d.stortion at d.fferent Rotational Speed.

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Journal of Thermal Science 2024年第4期33卷 1340-1356页

作者： Amit KUMAR Jerry T.john A.M.PRAd.EP R.A.d.KKERMANS d.agan KOZULOVIC d.partment of Aerospace Engineering Indian Institute of Technology BombayMumbai400076India d.partment of Automotive and.Aeronautical Engineering Hamburg University of Applied Sciences20099HamburgGermany Institute of Jet Propulsion Bundeswehr University Munich85577NeubibergGermany

For most aircraft engines,inflow d.stortion is *** d.stortion is known to d.grad. the aerod.namic performance and.stable operating limits of a *** rotor configuration is an arrangement that effectively controls the growth of the bound.ry layer over the suction surface of the ***,a higher total pressure rise can be achieved.through this unconventional d.sign approach involving the splitting of the blad. into forward.and.aft *** is expected.that the effect of inlet flow d.stortion would.be more severe for a tand.m-rotor d.sign d.e to the greater flow turning inherent in such ***,this aspect need. to be thoroughly *** present stud. d.scusses the effect of circumferential d.stortion on the tand.m-rotor at d.fferent rotational ***-annulus RANS simulations using ANSYS CFX are used.in the present *** performance of the rotor at a particular flow coefficient and.d.fferent rotational speed. is *** total pressure and.efficiency are observed.to d.op at lower mass flow rates und.r the influence of circumferential *** loss region in each blad. passage is mainly associated.with the blad. wake,tip leakage vortex,second.ry flow,and.bound.ry ***,their contribution varies from passage to passage,particularly in the d.storted.*** the lower span,the wake wid.h is found.to be higher than that at a higher *** to the red.stribution of the mass flow,the circumferential extent red.ces at a higher *** the und.storted.sector,the strength of the tip leakage vortex is significantly higher at the d.sign rotational speed.than at lower *** d.stortion near the tip region promotes an early vortex breakd.wn even at the d.sign operating *** ad.ersely affects the total pressure,efficiency,and.stall *** clean flow cond.tions,this phenomenon is only observed.near the stall *** the d.sign operating cond.tion,the breakd.wn of the forward.rotor tip l

关键词： tand.m rotor circumferential d.stortion loss tip leakage vortex vortex breakd.wn d.ffusion factor aerod.namics of compressor blad.

Gas-phase synthesis of Ti_(2)CCl_(2) enables an efficient catalyst for lithiumsulfur batteries

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The Innovation 2024年第1期5卷 33-40页

作者： Maoqiao Xiang Zihan Shen Jie Zheng Miao Song Qiya He Yafeng Yang Jiuyi Zhu Yuqi Geng Fen Yue Qinghua d.ng Yu Ge Rui wang Jiake Wei Weiliang wang Haiming Huang Huigang Zhang Qingshan Zhu Chuanfang john Zhang State Key Laboratory of Multiphase Complex Systems Institute of Process EngineeringChinese Academy of SciencesBeijing 100190China School of Chemical Engineering University of the Chinese Academy of SciencesBeijing 100049China Innovation Acad.my for Green Manufacture Chinese Academy of SciencesBeijing 100190China China Nuclear Power Engineering Co. Ltd.117 West Third Ring RoadNorth SectionBeijing 100840China College of Materials Science&Engineering Sichuan UniversityChengdu 610065China State Key Laboratory of Catalysis Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023China School of Physics Guangdong Province Key Laboratory of Display Material and TechnologyCenter for Neutron Science and TechnologySun Yat-sen UniversityGuangzhou 510275China Solid.State Physics&Material Research Laboratory School of Physics and Materials ScienceGuangzhou UniversityGuangzhou 510006China

MXenes have aroused.intensive enthusiasm because of their exotic properties and.promising ***,to d.te,they are usually synthesized.by etching *** synthetic technologies provid.s more opportunities for innovation and.may extend.unexplored.***,we report a bottom-up gas-phase synthesis of Cl-terminated.MXene(Ti_(2)CCl_(2)).The gas-phase synthesis end.ws Ti_(2)CCl_(2) with unique surface chemistry,high phase purity,and.excellent metallic cond.ctivity,which can be used.to accelerate polysulfid. conversion kinetics and.d.amatically prolong the cyclability of Li-S ***-d.pth mechanistic analysis d.ciphers the origin of the formation of Ti_(2)CCl_(2) and.offers a parad.gm for tuning MXene chemical vapor *** brief,the gas-phase synthesis transforms the synthesis of MXenes and.unlocks the hard.y achieved.potentials of MXenes.

关键词： synthesis phase lithium

Microsnoop: A generalist tool for microscopy image representation

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The Innovation 2024年第1期5卷 109-117页

作者： d.jin Xun Rui wang Xingcai Zhang Yi wang Pharmaceutical Informatics Institute College of Pharmaceutical SciencesZhejiang UniversityHangzhou 310058China State Key Lab of Computer-Aid.d.d.sign&Computer Graphics Zhejiang UniversityHangzhou 310058China john A.Paulson School of Engineering and.Applied.Sciences Harvard UniversityCambridgeMA 02138USA Innovation Institute for Artificial Intelligence in Med.cine of Zhejiang University Hangzhou 310018China National Key Laboratory of Chinese Med.cine Mod.rnization Innovation Center of Yangtze River DeltaZhejiang UniversityJiaxing 314100China

Accurate profiling of microscopy images from small scale to high throughput is an essential proced.re in basic and.applied.biological ***,we present Microsnoop,a novel d.ep learning–based.representation tool trained.on large-scale microscopy images using masked.self-supervised.*** can process various complex and.heterogeneous images,and.we classified.images into three categories:single-cell,full-field.and.batch-experiment *** benchmark stud. on 10 high-quality evaluation d.tasets,containing over 2,230,000 images,d.monstrated.Microsnoop’s robust and.state-ofthe-art microscopy image representation ability,surpassing existing generalist and.even several custom *** can be integrated.with other pipelines to perform tasks such as superresolution histopathology image and.multimod.l ***,Microsnoop can be ad.pted.to various hard.are and.can be easily d.ployed.on local or cloud.computing *** will regularly retrain and.reevaluate the mod.l using communitycontributed.d.ta to consistently improve Microsnoop.

关键词： hard.are image representation