简介：Weinvestigatetheareadistributionofclusters(loops)inthehoneycombO(n)loopmodelbymeansofthewormalgorithmwithn=0.5,1,1.5,and2.Atthecriticalpoint,thenumberofclusters,whoseenclosedareaisgreaterthanA,isproportionaltoA-1withaproportionalityconstantC.WeconfirmnumericallythatCisuniversal,anditsvalueagreeswellwiththepredictionsbasedontheCoulombgasmethod.

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简介：TheroleoftemperatureontheoxidationdynamicsofCu2OonZnO(0001)wasinvestigatedduringtheoxidationofCu(111)/ZnO(0001)byusingoxygenplasmaastheoxidant.AtransitionfromsinglecrystallineCu2O(111)orientationtomicro-zonephaseseparationwithmultipleorientationswasrevealedwhentheoxidationtemperatureincreasedabove300°C.TheexperimentalresultsclearlyshowtheeffectoftheoxidationtemperaturewiththeassistanceofoxygenplasmaonchangingthemorphologyofCu(111)filmandenhancingthelateralnucleationandmigrationabilitiesofcuprousoxides.Averticaltop-downoxidationmodeandalateralmigrationmodelwereproposedtoexplainthedifferentnucleationandgrowthdynamicsofthetemperature-dependentoxidationprocessintheoxidationofCu(111)/ZnO(0001).

简介：Usingfirst-principlescalculations,wesystematicallystudythedissociationsofO2moleculesondifferentultrathinPb（111）films.AccordingtoourpreviousworkrevealingthemolecularadsorptionprecursorstatesforO2,wefurtherexplorewhytherearetwonearlydegenerateadsorptionstatesonPb（111）ultrathinfilms,butnoprecursoradsorptionstatesexistingatallonMg（0001）andAl（111）surfaces.Thereasonisconcludedtobethedifferentsurfaceelectronicstructures.FortheO2dissociation,weconsiderboththereactionchannelsfromgas-likeandmolecularlyadsorbedO2molecules.WefindthattheenergybarrierforO2dissociationfromthemolecularadsorptionprecursorstatesisalwayssmallerthanthatfromO2gas.ThemostenergeticallyfavorabledissociationprocessisfoundtobethesameondifferentPb（111）films,andtheenergybarriersarefoundtobeinfluencedbythequantumsizeeffectsofPb（111）films.

简介：TheEINio-southernoscillation(ENSO)isaninterannualphenomenoninvolvedintropicalPacificoceanatmosphereinteractions.Inthispaper,wedevelopanasymptoticmethodofsolvingthenonlinearequationusingtheENSOmodel.BasedonaclassoftheoscillatoroftheENSOmodel,aapproximatesolutionofthecorrespondingproblemisstudiedemployingtheperturbationmethod.

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