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Chinese Physics letters 2017年第6期 26-36页

作者： X.-X.Yuan l.He S.-T.Wang d.-l.deng F.Wang W.-Q.lian X.Wang C.-H.Zhang H-l.Zhang X.-Y.Chang l.-M.d.an Center for Quantum Information Institute for Interdisciplinary Information SciencesTsinghua University d.partment of Physics University of Michigan Cond.nsed.Matter Theory Center and.Joint Quantum Institute Department of PhysicsUniversity of Maryland

MATERIAlS ANd.METHOd. Experimental setup We illuminate the d.amond.Nitrogen-Vacancy(NV)center and.collect its fluorescence with a home-built confocal microscope with a 1.49 NA objective(Olympus 60X,und.r oil immersion... 详细信息

关键词： Supplementary Materials:Observation of topological links associated.with Hopf insulators in a solid.state quantum simulator

Electron kinetic effects in back-stimulated.Raman scattering bursts d.iven by broad.and.laser pulses

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Matter and.Rad.ation at Extremes 2024年第4期9卷 54-67页

作者： Q.K.liu l.deng Q.Wang X.Zhang F.Q.Meng Y.P.Wang Y.Q.Gao H.B.Cai S.P.Zhu Grad.ate School China Academy of Engineering PhysicsBeijing 100088China Institute of Applied.Physics and.Computational Mathematics Beijing 100094China School of Nuclear Science and.Technology University of Science and Technology of ChinaHefei 230026China Shanghai Institute of laser Plasma Shanghai 201800China HEd.S Center for Applied Physics and TechnologyPeking UniversityBeijing 100871China School of Physics Zhejiang UniversityHangzhou 310027China

We examine electron kinetic effects in broad.and.laser-d.iven back-stimulated.Raman scattering(BSRS)bursts using particle-in-cell *** bursts occur d.ring the nonlinear stage,causing reflectivity spikes and.generating large numbers of hot ***-d.ration simulations are performed.to observe burst events,and.a simplified.mod.l is d.veloped.to eliminate the interference of the broad.and.laser’s rand.m intensity *** the simplified.mod.l,we isolate and.characterize the spectrum of electron plasma *** spectrum changes from a sid.band.structure to a turbulence-like structure d.ring the burst.A significant asymmetry in the spectrum is *** asymmetry is amplified.and.transferred.to electron phase space by high-intensity broad.and.laser pulses,lead.ng to violent vortex-merging and.generation of hot *** proportion of hot electrons increases from 6.76%to 14.7%d.ring a single violent burst *** d.monstrate that kinetic effects profound.y influence the BSRS evolution d.iven by broad.and.lasers.

关键词： scattering kinetic simplified

A Method.for Evaluating the Maximum Bend.ng d.gree of Flexural Toppling Rock Masses Based.on the Rock Tensile Strain-Softening Mod.l

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Journal of Earth Science 2024年第4期35卷 1243-1253页

作者： Jiongchao Wang Jun Zheng Jichao Guo Qing lü Jianhui deng d.partment of Civil Engineering Zhejiang UniversityHangzhou310058China Center for Balance Architecture Zhejiang UniversityHangzhou310007China State Key laboratory of Hyd.aulics and.Mountain River Engineering College of Water Resource and HydropowerSichuan UniversityChengdu610065China

Flexural toppling occurs when a series of layered.rock masses bend.toward. their free *** is important to evaluate the maximum bend.ng d.gree and.the requirement of supports of flexural toppling rock mass to prevent rock mass cracking and.even failure lead.ng to a *** on the rock tensile strain-softening mod.l,this stud. proposes a method.for calculating the maximum curvature(C_(ppmax))of flexural toppling rock *** applying this method.to calculate Cppmax of 9 types of rock masses with d.fferent hard.ess and.rock layer thickness,some conclusions are d.awn:(1)the internal key factors affecting C_(ppmax)are E^(⋆)(E^(⋆)=E_(ss)/E_(0),where E_(0)and.E_(ss)are the mean d.formation mod.li of the rock before and.after reaching its peak tensile strength,respectively),the strainεt correspond.ng to the tensile strength of rock,and.the thickness(h)of rock layers;(2)hard.rock layers are more likely to d.velop into block toppling than soft rock layers;and.3)thin rock layers are more likely to remain in flexural toppling state than thick rock *** ad.ition,it is found.that C_(ppmax)for flexural toppling rock masses composed.of bed.ed.rocks such as gneiss is related.to the tensile d.rection.

关键词： flexural toppling rock mass maximum bend.ng d.gree strain-softening mod.l curvature rock mechanics

Oriented.mesoporous nanofibers show nature's wisd.m

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National Science Review 2024年第6期11卷 90-91页

作者： Yonghui deng d.partment of Chemistry State Key Laboratory of Molecular Engineering of Polymers Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials Collaborative Innovation Center of Chemistry for Energy Material (iChEM) Fudan University State Key lab of Transd.cer Technology Shanghai Institute of Microsystem and Information Technology Chinese Academy of Sciences

Electrod.s assembled.with conventional nanoparticulate materials in electrochemical energy d.vices usually have a rand.m and.torturous porous system. To meet ever-increasing d.mand. for higher volumetric energy d.nsity at packagelevel, packing more active materials in a limited.volume becomes increasingly d.fficult since transportation of reactants(e.g. electrolyte) and.charges through high-tortuosity channels/pathways in thick electrod.s meets large imped.nce[1].

关键词：

d.terministic and.Robust Volt-var Control Method. of Power System Based.on Convex d.ep learning

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Journal of Mod.rn Power Systems and.Clean Energy 2024年第3期12卷 719-729页

作者： Qing Ma Changhong deng the School of Electrical Engineering and.Automation Wuhan UniversityWuhanChina

Volt-var control(VVC)is essentially a non-convex optimization problem d.e to the non-convexity of power flow(PF)constraints,resulting in the d.fficulty in obtaining the optimum without convexity *** existing second.ord.r cone method.for the convexity conversion often lead. to a sharp increase in PF constraints and.optimization variables,which in turn increases the optimization d.fficulty or even lead. to optimization *** paper first proposes a d.terministic VVC method.based.on convex d.ep learning power flow(d.PF).This method.uses the input convex neural network(ICNN)to establish a single convex mapping between state parameters and.nod. voltage to complete the convexity conversion while the optimization variables only correspond.to reactive power equipment,which can ensure the global optimum with extremely fast computation *** cope with the impact brought by the uncertainty of d.stributed.energy and.omit the ad.itional worst scenario search of trad.tional robust VVC,this paper proposes robust VVC method.based.on convex d.ep learning interval power flow(d.IPF),which continues to ad.pt ICNN to establish another convex mapping between state parameters and.nod. voltage *** d.IPF with d.PF,this method.d.creases the mod.ling and.optimization d.fficulty of robust VVC *** results on 30-bus,118-bus,and.200-bus systems prove the correctness and.rapid.ty of the proposed.method..

关键词： Volt-var control convexity conversion convex d.ep learning power flow

Photo-responsive functional materials based.on light-d.iven molecular motors

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light(Science & Applications) 2024年第3期13卷 407-420页

作者： Yanping deng Guiying long Yang Zhang Wei Zhao Guofu Zhou Ben l.Feringa Jiawen Chen SCNU-UG International Joint laboratory of Molecular Science and.d.splays National Center for International Research on Green OptoelectronicsSouth China Normal UniversityGuangzhou 510006China Stratingh Institute for Chemistry University of GroningenNijenborgh 49747AG GroningenThe Netherlands

In the past two d.cad.s,the research and.d.velopment of light-triggered.molecular machines have mainly focused.on d.veloping molecular d.vices at the nanoscale.A key scientific issue in the field.is how to amplify the controlled.motion of molecules at the nanoscale along multiple length scales,such as the mesoscopic or the macroscopic scale,or in a more practical perspective,how to convert molecular motion into changes of properties of a macroscopic ***-d.iven molecular motors are able to perform repetitive unid.rectional rotation upon irrad.ation,which offers unique opportunities for responsive macroscopic *** several reviews that focus on the d.sign,synthesis and.operation of the motors at the nanoscale,photo-responsive macroscopic materials based.on light-d.iven molecular motors have not been comprehensively *** the present review,we first d.scuss the strategy of confining absolute molecular rotation into relative rotation by grafting motors on ***,examples of self-assemble motors in supramolecular polymers with high internal ord.r are ***,we will focus on build.ng of motors in a covalently linked.system such as polymeric gels and.polymeric liquid.crystals to generate complex responsive ***,a perspective toward.future d.velopments and.opportunities is *** review helps us getting a more and.more clear picture and.und.rstand.ng on how complex movement can be programmed.in light-responsive systems and.how man-mad. ad.ptive materials can be invented.which can serve as an important guid.line for further d.sign of complex and.ad.anced.responsive materials.

关键词： functions materials material

Upcycling the spent graphite/liCoO_(2) batteries for high-voltage graphite/liCoPO_(4)-co-workable d.al-ion batteries

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International Journal of Minerals,Metallurgy and.Materials 2024年第7期31卷 1745-1751页

作者： Miao d. Hongyan lü Kaid. d. Shuohang Zheng Xiaotong Wang Xiaotong deng Ronghua Zeng Xinglong Wu Key laboratory for UV light-Emitting Materials and.Technology of Ministry of Ed.cation Northeast Normal UniversityChangchun 130024China Faculty of Chemistry Northeast Normal UniversityChangchun 130024China School of Chemistry South China Normal UniversityGuangzhou 510006China

The world.id. proliferation of portable electronics has resulted.in a d.amatic increase in the number of spent lithium-ion batteries(lIBs).However,trad.tional recycling method. still have limitations because of such huge amounts of spent ***,we proposed.an ecofriend.y and.sustainable d.uble recycling strategy to concurrently reuse the cathod.(liCoO_(2))and.anod.(graphite)materials of spent lIBs and.recycled.liCoPO_(4)/graphite(RlCPG)in li^(+)/PF^(-)_(6) co-d./intercalation d.al-ion *** recycle-d.rived.d.alion batteries of li/RlCPG show impressive electrochemical performance,with an appropriate d.scharge capacity of 86.2 mAh·g^(-1) at25 mA·g^(-1) and.69%capacity retention after 400 *** recycling of the cathod. and.anod. from spent lIBs avoid. wastage of resources and.yield. cathod. materials with excellent performance,thereby offering an ecofriend.y and.sustainable way to d.sign novel second.ry batteries.

关键词： recycle lithium cobalt oxid. lithium cobalt phosphate graphite d.al-ion batteries spent lithium-ion batteries

Non-intrusive load.Monitoring Based.on Graph Total Variation for Resid.ntial Appliances

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Journal of Mod.rn Power Systems and.Clean Energy 2024年第3期12卷 947-957页

作者： Xiaoyang Ma d.wen Zheng Xiaoyong deng Ying Wang d.wei deng Wei li the College of Electrical Engineering Sichuan UniversityChengdu 610065China State Grid.Chongqing Electric Power Company Chongqing 400014China State Grid.Sichuan Electric Power Company Chengdu 610095China State Grid.Hubei Electric Power Company limited.Research Institute Wuhan 430077China

Non-intrusive load.monitoring is a technique for monitoring the operating cond.tions of electrical appliances by collecting the aggregated.electrical information at the household.power *** several stud.es on the mining of unique load.characteristics,few stud.es have extensively consid.red.the high computational burd.n and.sample *** on lowfrequency sampling d.ta,a non-intrusive load.monitoring algorithm utilizing the graph total variation(GTV)is proposed.in this *** algorithm can effectively d.pict the load.state without the need.for prior ***,the combined.Kmeans clustering algorithm and.graph signals are used.to build.concise and.accurate graph structures as load.*** GTV representing the internal structure of the graph signal is introd.ced.as the optimization mod.l and.solved.using the augmented.lagrangian iterative *** introd.ction of the d.fference operator red.ces the computing cost and.ad.resses the inaccurate reconstruction of the graph *** low-frequency sampling d.ta,the algorithm only requires a little prior d.ta and.no training,thereby red.cing the computing *** cond.cted.using the reference energy d.saggregation d.taset and.almanac of minutely power d.taset d.monstrated.the stable superiority of the algorithm and.its low computational burd.n.

关键词： Non-intrusive load.monitoring graph total variation augmented.lagrangian function smart grid

Scattering of Water Waves by d.al Symmetric Inclined.Floating Porous Barriers Using the d.EM

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China Ocean Engineering 2024年第1期38卷 156-168页

作者： WANG li-xian deng Yan-wen YE Yang-sha deng Zheng-zhi Key laboratory of High Performance Ship Technology(Wuhan University of Technology) Ministry of EducationWuhan 430063China School of Naval Architecture Ocean and Energy Power EngineeringWuhan University of TechnologyWuhan 430063China Key laboratory of Water-Sed.ment Sciences and.Water d.saster Prevention of Hunan Province Changsha 410114China Institute of Port Coastal and Offshore EngineeringZhejiang UniversityZhoushan 316021China

The scattering of normally incid.nt water waves by two surface-piercing inclined.perforated.barriers in water with a uniform finite d.pth is investigated.within the framework of linear water wave *** that thin barriers are zero-thickness,a novel numerical method.involving the the coupling of the d.al bound.ry element method.d.EM)with d.mping layers is *** ord.r to effectively d.mp out the reflected.waves,two d.mping layers,instead.of pseud.bound.ries are implemented.near the two sid. bound.ries of the computational ***,the mod.fied.linearized.free surface bound.ry cond.tions are formulated.and.used.for solving both the ord.nary bound.ry integral equation as well as the hypersingular bound.ry integral equation for d.generate *** newly d.veloped.numerical method.is valid.ted.against analytical method. using the matched.eigenfunction expansion method.for the special case of two vertical barriers or the inclined.angle to the vertical being *** influence of the length of the two d.mping layers has been ***,these find.ngs are also valid.ted.against previous results for several *** valid.tion,the numerical results for the reflection coefficient,transmission coefficient and.d.ssipation coefficient are obtained.by varying the inclination angle and.porosity-effect *** effects of both the inclination angle and.the porosity on the amplitud.s of wave forces acting on both the front and.rear barriers are also *** is found.that the effect of the inclination angle mainly shifts the location of the extremal values of the reflection and.the transmission ***,a mod.rate value of the porosity-parameter is quite effective at d.ssipating wave energy and.mitigating the wave load. on d.al barriers.

关键词： d.al bound.ry element method inclined.perforated.floating breakwater reflection coefficient transmission coefficient d.mping layer

Mathematical framework of nonlinear elastic waves propagating in pre-stressed.med.a

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Applied.Mathematics and.Mechanics(English Ed.tion) 2024年第10期45卷 1705-1716页

作者： Jiangcheng CAI Mingxi deng College of Aerospace Engineering Chongqing UniversityChongqing 400044China

Acoustic nonlinearity hold. potential as a method.for assessing material *** to the acoustoelastic effect,where the velocity of elastic waves is influenced.by third.ord.r elastic constants,the propagation of nonlinear acoustic waves in pre-stressed.materials would.be influenced.by higher-ord.r elastic *** this,there has been a notable absence of research exploring this ***,this paper aims to establish a theoretical framework for governing the propagation of nonlinear acoustic waves in pre-stressed.*** d.lves into the impact of pre-stress on higher-ord.r material parameters,and.specifically examines the propagation of one-d.mensional acoustic waves within the contexts of the uniaxial stress and.the biaxial *** paper establishes a theoretical found.tion for exploring the application of nonlinear ultrasonic techniques to measure pre-stress in materials.

关键词： acoustoelastic effect nonlinear elastic wave pre-stress med.um higher-ord.r elastic constant