简介:Floorplan,clocknetworkandpowerplanarecrucialstepsindeepsub-micronsystem-on-chipdesign.Anoveldi-agonalfloorplanisintegratedtoenhancethedatasharingbetweendifferentcoresinsystem-on-chip.Customclocknetworkcon-taininghand-adjustedbuffersandvariableroutingrulesisconstructedtorealizebalancedsynchronization.EffectivepowerplanconsideringbothIRdropandelectromigrationachieveshighutilizationandmaintainspowerintegrityinourMediaSoC.Usingsuchmethods,deepsub-microndesignchallengesaremanagedunderafastprototypingmethodology,whichgreatlyshortensthedesigncycle.
简介:Theprecipitationefficiencyanditsrelationshiptophysicalfactorsareexaminedbyanalyzingatwo-dimensionalcloud-resolvingmodelsimulationduringTOGACOAREinthisstudy.Thebasicphysicalfactorsincludeconvectiveavailablepotentialenergy,water–vaporconvergence,verticalwindshear,cloudratio,seasurfacetemperature,airtemperature,andprecipitablewater.Precipitationefficienciesdonotshowacloserelationshiptoairtemperaturenortoseasurfacetemperaturenortoprecipitablewater.Theprecipitationefficiencyincreasesasthewater–vaporconvergencerateincreasesandverticalwindshearweakens,whereasitdecreasesastheconvectiveavailablepotentialenergydissipatesandanvilcloudsdevelop.
简介:Usingfirst-principlescalculations,thecontactbetweenthescandium(Sc)andsemiconductingcarbonnanotube(CNT)isinvestigated.Thisisoneofthebestqualityofn-typecontacts.Twojunctionmodelswith(8,0)CNTonlow-indexScsurfacesareconstructedtoelucidatethestructuralandelectronicpropertiesofSc/CNTjunctions.AnalysesbasedondensityofstatesandchargedifferencerevealthatstrongchemicalbondsareformedbetweenScandCatomsduetohybridstatesofSc3dstateandC2πstate.WithrespecttoTi(0001)/CNTjunction,wefindthedipolelayerformedattheinterfaceofSc(0001)/CNTiscomparablewiththatofTi(0001)/CNTbutgivesanegativebarrierattheinterface.ThisindicatesthattheexcellentcontactpropertiesofScmetalelectrodearecausedbyitslowworkfunctionandexcellentbindingwithCNT.
简介:Theprocessofhighpowerlaserinteractionwiththelargescalelengthcoronaplasmaproducedbytheleadingedgeofthelaserpulsehasbeeninvestigated.Earlyexperimentalresultsarere-analyzedandconclusionsdrawn.Inparticular,studiesofthecloseconnectionofunstablefilamentationinstabilitywith–mainly–two-plasmondecayand–partly–stimulatedRamanscattering,stimulatedBrillouinscattering,andresonanceabsorptionarecarriedoutinthispaper.Thepositiveandnegativeeffectsoffilamentationinstabilityarealsodiscussed.
简介:Recentstudiesofthemodulationofphysicalpropertiesinoxidethinfilmsbymultiplefieldsarereviewed.Someofthekeyissuesandprospectsofthisareaofstudyarealsoaddressed.Oxidethinfilmsexhibitversatilephysicalpropertiessuchasmagnetism,ferroelectricity,piezoelectricity,metal–insulatortransition(MIT),multiferroicity,colossalmagnetoresistivity,switchableresistivity.Moreimportantly,theexhibitedmultifunctionalitycanbetunedbyvariousexternalfields,whichhasenableddemonstrationofnovelelectronicdevices.
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简介:Wehaveinvestigatedthephysicalproperties,includingthemorphology,texture,adhesionandchemicalquality,ofhigh-frequencychemicalvapourdepositeddiamondcoatingsonWC-6%Cosubstrates,whichwerepre-treatedbyatwo-stepetchingmethod.TheresultsindicatethattheincreasingCocontentfrom0.12to3.05%withintheetchingdepthof5μmcausedamorphologytransformationfromprismdiamondtospheruliticdiamond,andatexturetransformationfroma{111}orientationtoa{110}orientation.TheRamanspectrumshowsthatthespheruliticdiamondfilmcontainsmorenon-diamondphases(graphite,amorphouscarbonanddiamond-likecarbon,etc)andhaslowerchemicalqualitythandiamondfilmsonaWC-6%Cosubstrate.Thediamondcoatinggrainsizesbecameaboutfourtimessmallerwhenthedepositiontemperaturesonthesubstratesurfacewerereducedfrom1000to900℃.Comparedwithspheruliticdiamondfilms,theprismdiamondfilmsexhibitbetteradhesionontheWC-6%Cosubstrate.
简介:ThephysicalandchemicalpropertiesofFFA-1ionexchangefiberhavebeencharacterizedwithIRspectrum,thermalanalysisandSEMmeans.ThepHtitrationcurve,swellingrate,mechanicalproperties,resistancedropoffilterlayeraswellasthedynamicadsorptionforSO2wasdetermined.TheseexperimentsprovidedtheessentialparametersforthepracticalapplicationofFFA-1materialinadsorptionoftoxicgases.
简介:这份报纸发源维的分析的讨论并且在有磁力地帮助的使流体化的床上可伸缩。进程变量的基本检查,合并机械、磁性的单位,允许变量的混合集合的变换直到作为贡献帮助使液化行为的领域的效果代表表面力量的统一术语。自从新变量都是由三个基本领域产生的典型压力,这转变被称为压力变换:严肃,磁性并且液体流动。这条途径以无尺寸的组而非对古典维的分析恰当的正式代数学的操作探讨物理基础。基本的无尺寸的组称为小粒的磁性的邦德数字作为严肃并且磁场的典型压力的比率被介绍。这分析也提供描绘磁场的一套命名无尺寸的数字帮助使液化象Filippov数字,Rosensweig数字,Kwauk数字和Siegell数字那样,作为典型压力的比率发源。
简介:MethodofVSC(VoltageShortedCompaction)canbeusedtodeterminetheintrinsictemperaturedependenceofconductivityofpolycrystallinecompaction.TheexperimentalconditionsandtechnicalkeyforpreparationofVSCdeviceanditsphysicalmodelaswellasitsapplicationsinconductingpolymersarediscussedindetail.
简介:Graphene,definedasasingleatomicplaneofgraphite,isasemimetalwithasmalloverlapbetweenthevalenceandconductionbands.Thestackingofgrapheneuptoseveralatomiclayerscanleadtodiversephysicalproperties,dependingonthestackingmethod.Bilayergrapheneisalsoasemimetal,adoptingtheAB-stacked(orBernal-stacked)structureortherareAA-stackedstructure.Trilayerorfew-layergraphene(FLG)canbesemimetalsorsemiconductors,dependingonwhethertheyadoptBernal(ABA)stackingorrhoinbohedral(ABC)stacking.