简介：Inthispaper,theminimaldissipationlocaldiscontinuousGalerkinmethodisstudiedtosolvetheellipticinterfaceproblemsintwo-dimensionaldomains.Theinterfacemaybearbitrarysmoothcurves.ItisshownthattheerrorestimatesinL2-normforthesolutionandthefluxareO（h2｜logh｜）andO（h｜logh｜^l/2）,respectively.Innumericalexperiments,thesuccessivesubstitutioniterativemethodsareusedtosolvetheLDGschemes.Numericalresultsverifytheefficiencvandaccuracvofthemethod.

简介：根在稳定并且加强土壤起一个重要作用。这篇文章试图学习分支的在土壤和根之间的接口的机械性质，用在实验室的撤退测试方法。有分支接口的土壤根的机械性质通过撤退力量和根滑动曲线(F-S曲线)被决定。调查24Pinustabulaeformis的结果挑选根和55P。有分支的tabulaeformis根表明了三种撤退测试失败：分叉的根，分叉的节点上的破裂失败，和撤退失败上的破裂失败。分支角度与分支在根的失败模式上有显著效果：最大的撤退力量与分支直径和分支角度的和增加了。山峰滑动和起始的力量与分支直径的和有积极关联。然而，在分支角度和起始的力量之间的关联的意义测试证明他们没有关联。布朗奇角度和分支根直径影响在根系统和土壤之间的抛锚性质。因此，与分支调查根的抛锚力学理解根加强和抛锚的机制是重要的。

简介：Interfacedislocationsmaydramaticallychangetheelectricproperties,suchaspolarization,ofthepiezoelectriccrystals.Inthispaper,westudythelinearinteractionsoftwointerfacedislocationloopswitharbitraryshapeingenerallyanisotropicpiezoelectricbi-crystals.Asimpleformulaforcalculatingtheinteractionenergyoftheinterfacedislocationloopsisderivedandgivenbyadoublelineintegralalongtwocloseddislocationcurves.Particularly,interactionsbetweentwostraightsegmentsoftheinterfacedislocationsaresolvedanalytically,whichcanbeappliedtoapproximateanycurvedloopsothatananalyticalsolutioncanbealsoachieved.Numericalresultsshowtheinfluenceofthebi-crystalinterfaceaswellasthematerialorientationontheinteractionofinterfacedislocationloops.

简介：这个工作由进行批实验在沉积调查Cu离子的吸附，包括等温的实验和吸附动力学实验。从等温的实验的数据用Freundlich和Temkin模特儿兰米尔被分析，试验性的运动数据用伪first-order，pseudo-second-order，Elovich，液体电影散开和intra粒子散开模型是合适的。兰米尔模型导致了为平衡数据合适的最好，它显示沉积上的Cu离子的吸附能力是1.0403?mg?有K1>L4.2877的KL价值?L?mg1。也提供的Freundlich和Temkin模型好适合，并且nFnF和A价值是3.8565和66.9964?Lmg1,分别地，显示在Cu离子和沉积之间的更强壮的吸附紧张和吸附精力。与伪first-order和Elovich模型相比，pseudo-second-order模型为描述吸附动力学是更适当的，显示吸附的化学吸着性质。吸附运动过程能被划分成电影散开，毛孔散开和吸附反应。为吸附动力学的控制的步随着吸附过程的发展变化了。全部吸附过程拿了180?min。电影散开是控制步骤为开始的20?min。在期间20～60?min时期，逐渐地增加的毛孔散开和电影散开减少了以便两现象共存了。毛孔散开在60-180期间是控制步骤?min时期。

简介：界面的脱臼可以有相应于的一个传播核心一弱砍接口的抵抗。在这份报纸，一个圆锥形的模型被建议在各向异性的bimaterials模仿界面的脱臼的传播核心。由Stroh形式主义和草地功能，有弹性的地的分析表达式为如此的脱臼被推出。作为一个例子拿Cu/Nbbimaterial，方法的精确性和效率被接口条件很好验证，这被表明，一个传播核心能极大地与紧缩的核心相比在界面的脱臼附近减少压力紧张，并且传播核心区域附近的有弹性的地与压缩核心显著地不同，当他们对是的一个地点不太敏感时，1.5预定核心宽度离开传播核心的中心。

简介：内在的hydrogenated非结晶的硅(a-Si:H)电影在n类型上被扔由到分析的热电线的化学蒸汽免职(HWCVD)的水晶的硅(c-Si)晶片非结晶/水晶的heterointerface钝化性质。对称的heterostructure的少数搬运人一生被使用请教WCT-120一生测试者系统，和决定从一生测量的接口状态密度被建议的一个简单方法的Sinton测量。接口状态密度测量被使用深水平的短暂光谱学(DLTS)证明简单方法的有效性也执行。微观结构和a-Si的氢结合配置:有不同的氢冲淡的H电影被使用分光镜的ellipsometry(SE)和Fourier变换调查红外线的光谱学(FTIR)分别地。接口状态密度的更低的值被使用a-Si获得:有水晶的硅上的更一致的、紧缩的微观结构和更少体积缺点的H电影由HWCVD扔了。

简介：Thispaperdescribesanovelsharpinterfaceapproachformodelingthecavitationphenomenainincompressibleviscousflows.Aone-fieldformulationisadoptedforthevapor-liquidtwo-phaseflowandtheinterfaceistrackedusingavolumeoffluid(VOF)method.PhasechangeattheinterfaceismodeledusingasimplificationoftheRayleigh-Plessetequation.Interfacejumpconditionsinvelocityandpressurefieldaretreatedusingalevelsetbasedghostfluidmethod.Thelevelsetfunctionisconstructedfromthevolumefractionfunction.Amarchingcubesmethodisusedtocomputetheinterfaceareaattheinterfacegridcells.Aparallelfastmarchingmethodisemployedtopropagateinterfaceinformationintothefield.Adescriptionoftheequationsandnumericalmethodsispresented.Resultsforacavitatinghydrofoilarecomparedwithexperimentaldata.

简介：

简介：Inthispaper,weinvestigateflowswithmovingcontactlinesoncurvedsolidwallsonadual-resolutiongridusingadiffuse-interfaceimmersed-boundary(DIIB)method.Thedual-resolutiongrid,onwhichtheflowsaresolvedonacoarsemeshwhiletheinterfaceisresolvedonafinemesh,wasshowntosignificantlyimprovethecomputationalefficiencywhensimulatingmultiphaseflows.Ontheotherhand,theDIIBmethodisabletoresolvedynamicwettingoncurvedsubstratesonaCartesiangrid,butitusuallyrequiresameshofhighresolutioninthevicinityofamovingcontactlinetoresolvethelocalflow.Inthepresentstudy,wecoupletheDIIBmethodwiththedual-resolutiongrid,toimprovetheinterfaceresolutionforflowswithmovingcontactlinesoncurvedsolidwallsatanaffordablecost.Thedynamicbehaviorofmovingcontactlinesisvalidatedbystudyingdropspreading,andthenumericalresultssuggestthattheeffectivesliplengthλ_ncanbeapproximatedby1.9Cn,whereCnisadimensionlessmeasureofthethicknessofthediffuseinterface.Wealsoapplythemethodtodropimpactontoaconvexsubstrate,andtheresultsonthedual-resolutiongridareingoodagreementwiththoseonasingle-resolutiongrid.ItshowsthattheaxisymmetricsimulationsusingtheDIIBmethodonthedual-resolutiongridsavesnearly60%ofthecomputationaltimecomparedwiththatonasingle-resolutiongrid.

简介：Ameshlessradialbasisfunction(RBF)collocationmethodbasedontheEringennonlocalelasticitytheoryisdevelopedtocalculatethebandstructuresofternaryandquaternarynanoscalemulti-layeredphononiccrystals(PNCs)withfunctionallygraded(FG)interlayers.Detailedcalculationsareperformedforanti-planetransversewavespropagatinginsuchPNCs.TheinfluencesofFGandhomogeneousinterlayers,componentnumber,nonlocalinterfaceimperfectionsandnanoscalesizeoncut-offfrequencyandbandstructuresareinvestigatedindetail.Numericalresultsshowthatthesefactorshavesignificanteffectsonbandstructuresatthemacroscopicandmicroscopicscales.

简介：Tobreakthroughthebottle-neckofquantumyieldinupconversion(UC)core-shellsystem,weelucidatedthattheenergytransferefficiencyincore-shellsystemhadanevidentcontributionfromthechargetransferofinterfacewithrelatedtotwofactors:(1)bandoffsetsand(2)bindingenergyareadensity.Thesetwovariablesweredeterminedbymaterialintrinsicpropertiesandcore-shellthicknessratio.Wefurtherunraveledthemechanismofnon-radiativeenergytransferbychargetransferinduceddipoleattheinterface,basedonaquasi-classicalderivationfromF?rstertyperesonantenergytransfer(FRET)model.Withstablebondingacrosstheinterface,thecontributionsonenergytransferinbothradiativeandnon-radiativeenergytransfershouldalsobeaccountedtogetherinAuzel'senergytransfer(ETU)modelincore-shellsystem.Basedonthediscussionaboutinterfacebonding,bandoffsets,andformationenergies,wefiguredoutthesignificanceofinterfacebondinginducedgapstates(IBIGS)thatplayedasignificantroleforinfluencingthechargetransferandradiativetypeenergytransfer.Theinterfacebandoffsetswereakeyfactorindominatingthenon-radiativeenergytransfer,whichwasalsocorrelatedtocore-shellthicknessratio.Wefoundthattheenergyareadensitywithrelatedtocore/shellthicknessratiofollowedthetrendofBoltzmansigmoidalgrowthfunction.Bythephysicaltrend,thisworkcontributedareferencehowthemulti-layeredcore-shellstructurewasformedstartingfromtheverybeginningwithinminimumsize.Aroutewaspavedtowardsasystematicstudyoftheinterfacetounveiltheenergytransfermechanismincore-shellsystems.