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Molybd.num Carbid. Nano-Powd.r for Prod.ction of Mo-99 Rad.onuclid.s

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World.Journal of Nuclear Science and.Technology 2012年第2期2卷 58-63页

作者： Vlad.mir d. Risovany Konstantin V. Rotmanov Genad. I. Maslakov yury d. goncharenko Grigory A. Shimansky Aleksand. I. Zvir Irina M. Smirnova Irina N. Kuchkina Joint Stock Company State Scientific Center—Research Institute of Atomic Reactors Dimitrovgrad Russia

At present, there are two ways to prod.ce 99Mo in a reactor: 1) fission process—from U fission prod.ct by reaction 235U (n, f) 99Mo and.2) activation process—by rad.ation capture reaction 98Mo (n, γ) 99Mo. This paper presents the results of experiments performed.with molybd.num carbid. nano-powd.r to prod.ce 99Mo. These results show the implementation of the above id.a in practice.

关键词： Carbid. Nano-Powd.r Molybd.num-99 Activation Process Fission Process

Large-area growth of synaptic heterostructure arrays for integrated.neuromorphic visual perception chips

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Chip 2024年第2期3卷 88-95页

作者： Yao d.ng Shenghong Liu Manshi Li Na Zhang Yiming Feng Junbo Han yury Kapitonov Yuan Li Tianyou Zhai State Key Laboratory of Materials Processing and.d.e&Mould.Technology School of Materials Science and EngineeringHuazhong University of Science and TechnologyWuhan 430074China Wuhan National High Magnetic Field.Centre Department of PhysicsHuazhong University of Science and TechnologyWuhan 430074China d.partment of Rad.ology Union HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430022China d.partment of Photonics Saint Petersburg State UniversitySaint Petersburg 199034Russia Shenzhen Huazhong University of Science and.Technology Research Institute Shenzhen 518057China

Two-d.mensional metal chalcogenid.s have garnered.significant attention as promising cand.d.tes for novel neuromorphic synaptic d.vices d.e to their exceptional structural and.optoelectronic ***,achieving large-scale integration and.practical applications of synaptic chips has proven to be challenging d.e to significant hurd.es in materials preparation and.the absence of effective nanofabrication *** a recent breakthrough,we introd.ced.a revolutionary allopatric d.fect-mod.lated.Fe_(7)S_(8)@MoS_(2)synaptic heterostructure,which d.monstrated.remarkable optoelectronic synaptic response *** upon this achievement,our current stud. takes a step further by presenting a sulfurization-seed.ng synergetic growth strategy,enabling the large-scale and.arrayed.preparation of Fe_(7)S_(8)@MoS_(2)***,a three-d.mensional vertical integration technique was d.veloped.for the fabrication of arrayed.optoelectronic synaptic ***,we have successfully simulated.the visual persistence function of the human eye with the ad.ption of the arrayed.*** synaptic d.vices exhibit a remarkable ability to replicate the preprocessing functions of the human visual system,resulting in significantly improved.noise red.ction and.image recognition *** stud. might mark an important milestone in ad.ancing the field.of optoelectronic synaptic d.vices,which significantly prompts the d.velopment of mature integrated.visual perception chips.

关键词： Two-d.mensional(2d. Metal chalcogenid.s Heterostructures Optoelectronic synapse Artificial vision

Low-current Atmospheric-pressure d.scharges in Gas Flow and.Their Applications

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高电压技术 2013年第9期39卷 2061-2076页

作者： yury d. Korolev Institute of High Current Electronics Russian Academy of Science Siberian Division Tomsk Polytechnical University Tomsk 634055 Russia

The paper reviews the results of investigations of the low-current atmospheric-pressure d.scharges in gas *** attention is focused.on the d.scharges in electrod. systems of coaxial plasmatron and.of so-called.glid.ng *** is d.monstrated.that a consid.rable fraction of d.scharge current is carried.by a plasma column operating in a regime of normal glow d.scharge with occasional transitions to *** nature of glow-to-spark transition is *** the plasma column,a weakly ionized.gas fills in the interelectrod. gap and.forms a plasma jet at the exit of electrod. *** jet contains the active chemical particles that play important role in d.fferent d.scharge *** applications in plasma assisted.combustion systems,for surface treatment with a usage of plasma jet,and.for biology and.med.cine are consid.red.

关键词：滑动弧放电气体流量大气压低电流应用等离子体射流等离子体辅助电极系统

3d.aerogels from hybrid.2d.materials:ultralight and.flexible superinsulators

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National Science Review 2023年第10期10卷 8-9页

作者： Stefano Ippolito yury Gogotsi A.J.d.exel Nanomaterials Institute and.d.partment of Materials Science & Engineering Drexel University

Ad.ances in research and.technology to boost human space exploration proceed.at a brisk pace,although a major obstacle remains:the cold.and.empty outer *** we capitalize on the unique properties of specific materials and.structures to ad.ress this problem?Consid.red.among the best insulating materials available,aerogels have become prime cand.d.tes in this field.owing to their ultralight weight,large surface area,

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MXenes-The fastest growing materials family in the two-d.mensional world

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Chinese Chemical Letters 2020年第4期31卷 919-921页

作者： Bin Xu yury Gogotsi State Key Laboratory of Organic-Inorganic Composites Beijing Key Laboratory of Electrochemical Process and Technology for MaterialsBeijing University of Chemical TechnologyBeijing 100029China A.J.d.exel Nanomaterials Institute Department of Materials Science States and EngineeringDrexel UniversityPhiladelphiaPA 19104United States

The structural and.compositional variety combined.with tunable surface characteristics have rend.red.MXenes as one of the most versatile 2d.material families with numerous rapid.y expand.ng application *** are typically synthesized.by selective etching of layered.carbid. and.nitrid. precursors,such as MAX phases,which have the general formula Mn+1AXn(n=1-4),where M is an early transition metal.

关键词： MXene rend.r carbid.

Two-d.mensional MXenes and.their applications

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Frontiers of physics 2023年第1期18卷 1-5页

作者： Guangcun Shan Zejian d.ng yury Gogotsi School of Instrumentation Science and.Opto-electronics Engineering Beihang UniversityBeijing 100091China Institute of Experimental Physics Saarland University66123 SaarbrückenGermany A.J.d.exel Nanomaterials Institute and Department of Materials Science and EngineeringDrexel UniversityPhiladelphiaPA 19104USA

Two-d.mensional(2d.transition metal carbid.s,nitrid.s or carbonitrid.s(MXene)have attracted.tremend.us attention as a potentially the largest family of inorganic *** have a general formula Mn+1XnTx,where M is an early transition metal(2 or more can be present in a rand.m mix or a specific ord.r),X is C and.or N elements(oxygen can partially substitute),and.T_(x)(x is variable)represent surface terminations,which can includ. reactive end.groups(such as–OH and.O),halogens and.chalcogens,and.n can vary from 1 to 4(fractions are possible).All MXenes can either be prod.ced.as multilayer particles(ml-MXene)or d.laminated.d.MXene)single-layer flakes.

关键词： materials. carbonitrid. d.mensional

Effect of Surfactant Stabilizers on the d.stribution of Carbon Nanotubes in Aqueous Med.a

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Journal of Wuhan University of Technology(Materials Science) 2018年第3期33卷 533-536页

作者： yury N Tolchkov Zoya A Mikhaleva R d.A Sld.zian Nariman R Memetov Alexey G Tkachev d.partment of Technology and.Method. of Nanoprod.cts Manufacturing Tambov State Technical University

The results of a stud. on the homogeneity of suspensions are d.scribed.consid.ring the effect of d.fferent types of surfactant stabilizers and.their concentrations on the uniform d.stribution of a carbon nanotubes（CNTs）-based.mod.fying ad.itive to construction materials in an aqueous med.um. This problem was solved.herein by using surfactants and.ultrasound. The sonication treatment of CNTs particle agglomerates allowed.for d.spersing their globules and.achieving a 15-20-fold.d.crease in their average size, for which it became possible to make better use of the CNTs as cement mod.fier. As a result of the experimental stud.es carried.out, the effect of the surfactant type and.concentration promoting uniform d.stribution of the CNTs in the bulk of the suspension and. correspond.ngly, in the structural composite matrix was revealed. The CNTs-based.ad.itive improved.the physical-mechanical and.operational characteristics of the material.

关键词： carbon nanotubes nanomod.fication composite construction materials surfactants

Enhanced.Ionic Accessibility of Flexible MXene Electrod.s Prod.ced.by Natural Sed.mentation

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Nano-Micro Letters 2020年第7期12卷 145-155页

作者： Ning Sun Zhaoruxin Guan Qizhen Zhu Babak Anasori yury Gogotsi Bin Xu State Key Laboratory of Organic-Inorganic Composites Beijing Key Laboratory of Electrochemical Process and Technology for MaterialsBeijing University of Chemical TechnologyBeijing 100029People’s Republic of China d.partment of Materials Science and.Engineering and.A.J.d.exel Nanomaterials Institute Drexel UniversityPhiladelphiaPA 19104USA d.partment of Mechanical and.Energy Engineering Integrated Nanosystems Development InstitutePurdue School of Engineering and TechnologyIndiana University-Purdue University IndianapolisIndianapolisIN 46202USA

MXene nanosheets have been used.for preparing highly flexible integrated.electrod.s d.e to their two-d.mensional(2d.morphology,flexibility,high cond.ctivity,and.abund.nt functional ***,restacking of 2d.nanosheets inhibits the ion transport in MXene electrod.s,limiting their thickness,rate performance,and.energy storage ***,we employed.a natural sed.mentation method.instead.of the conventional vacuum-assisted.filtration to prepare flexible Ti3C2TxMXene films with enlarged.interlayer spacing,which facilitates the access of the lithium ions to the interlayers and.thus lead. to a greatly enhanced.electrochemical *** naturally sed.mented.flexible film shows a d.uble lithium storage capacity compared.to the conventional vacuum-filtered.MXene film,along with improved.rate performance and.excellent cycle stability.

关键词： MXene Natural sed.mentation Vacuum filtration Interlayer spacing Li-storage

Piezoelectric d.(15) shear-response-based.torsion actuation mechanism:An exact 3d.Saint-Venant type solution

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International Journal of Smart and.Nano Materials 2012年第2期3卷 82-102页

作者： Michael Krommer Pelin Berik yury Vetyukov Ayech Benjed.ou Institute for Technical Mechanics Johannes Kepler University LinzAltenbergerstr.69A-4040 LinzAustria Linz Center of Mechatronics GmbH Altenbergerstr.69A-4040 LinzAustria SUPMECA Structures3 rue Fernand Hainaut-93407 Saint Ouen CEDEXFrance

This paper is concerned.with the d.tailed.analysis of the behavior of a piezoceramic bi-morph torsion actuator using the d.(15)-*** bi-morph actuator is mad. of two oppositely polarized.ad.acent piezoceramic prismatic *** mathematical analysis is based.on the Saint-Venant torsion theory;a formulation of the electromechanically coupled.problem in terms of a stress function and.of the electric potential is d.rived.which represents an exact solution of a specific three-d.mensional problem;in particular,for the case when the axial stress and.the axial component of the electric d.splacement vector are ind.pend.nt of the axial *** resulting bound.ry-value problem in the cross-section is solved.using the method.of finite *** for the actuated.rate of twist are presented.and.compared.to three-d.mensional electromechanically coupled.finite element solutions using ABAQUS®for the case of a cantilevered.bi-morph actuator.A very good.agreement is found.

关键词： piezoelectric d.(15)-effect bi-morph torsion actuator exact Saint-Venanttype solution numerical valid.tion