简介：Ｔｈｅｅｆｆｅｃｔｏｆｍａｇｎｅｔｉｃｆｉｅｌｄ－ｆｒｅｅｓｐａｃｅｏｎｔｈｅａｃｏｕｓｔｉｃｂｅｈａｖｉｏｒｏｆｂｕｄｇｅｒｉｇａｒｓ（Ｍｅ－ｌｏｐｓｉｔｔａｃｕｓｕｎｄｕｌａｆｕｓ）ＪＩＮ－ＣＨＡＮＧＪＩＡＮＧ１）（蒋锦昌），ＨＡＩ－ＱＩＡＮＧＪ...

简介：Pockel’seffectandopticalrectificationinducedbythebuilt-inelectricfieldinthespacechargeregionofasiliconsurfacelayeraredemonstratedina{001}-cuthigh-resistancesiliconcrystal.Thehalf-wavevoltageisabout203V,deducedbyPockel’seffect.TheratioX2zxxX2zzziscalculatedtobeabout0.942accordingtoopticalrectification.OurcomparisonwiththeKerrsignalshowsthatPockel’ssignalismuchstronger.Thisindicatesthattheseeffectsaresoconsiderablethattheyshouldbetakenintoaccountwhendesigningsilicon-basedphotonicdevices.

简介：Inthispaper,wepresentanultra-compact1Dphotoniccrystal(PhC)Bragggratingdesignonathinfilmlithiumniobateslotwaveguide(SWG)via2D-and3D-FDTDsimulations.2D-FDTDsimulationsareemployedtotunethephotonicbandgap(PBG)size,PBGcenter,cavityresonancewavelength,andthewholesizeofPhC.3DFDTDsimulationsarecarriedouttomodeltherealstructurebyvaryingdifferentgeometricalparameterssuchasSWGheightandPhCsize.AmoderateresonancequalityfactorQofabout300isachievedwithaPhCsizeofonly0.5μm×0.7μm×6μm.TheproposedslotBragggratingstructureisthenexploitedasanelectricfield(E-field)sensor.Thesensitivityisanalyzedby3D-FDTDsimulationswithaminimumdetectableE-fieldassmallas23mV∕m.Thepossiblefabricationprocessoftheproposedstructureisalsodiscussed.ThecompactsizeoftheproposedslotBragggratingstructuremayhaveapplicationsinon-chipE-fieldsensing,opticalfiltering,etc.

简介：ConsideringitscentralpositioninEastGondwanareconstructions,theIndiansubcontinentfiguresprominentlyinthestudies,whichwereenvisagedundertherecentlyconceptualizedinternationalproject—""LEGENDS""(LithosphericEvolutionofGondwanaEastfrominterdisciplinaryDeepSurveys),amajorinitiativebyinternationalscientificcommunitytostudycontinentsofthesouthernhemisphere.TheCC-8subcommitteeoftheInternationalLithosphericProgramme(ILP)hasalsoacceptedtheLEGENDSinitiative.

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简介：Inthispaper,byusingthemethodofalgebraicanalysis,theresultsinourpreviousworkaregeneralized.Theseresultsareofimportanceinthequalitativetheoryofpolynomialautonomoussystems.

简介：在在一台三阶段的轴的流动压缩机的转子blade-to-blade段落之间的不稳定的流动结构被不稳定的表演特征，casing墙压力变化和他们的小浪分析的详细大小试验性地调查。测试压缩机的主要特征是在系列连接到压缩机插头以便供应压缩或扩大波浪从的一台能力坦克设备压缩机下游。研究注意集中于同时发生的巨浪和旋转货摊的货摊以后的特征。在不稳定的表演曲线上操作点的压缩机的影响证明巨浪周期不规则地变化取决于不变的抵抗特征，并且墙压力变化的小浪分析的结果建议巨浪周期可以被旋转货摊房间结构有选择地在转子串联以内决定。

简介：Theflowfieldinacoldmodelof2500t/dfive-stagecyclonepreheaterandprecalcinersystemwasnumericallysimulated.Renaultstressmodel(RSM)turbulentmodelwasadoptedtosimulatetheflowfield,andahybridmeshschemewasselectedtogeneratecalculationmesh.Withthefirstorderupwinddifference,finite-volumemethodwasusedtoconvertturbulentequationsintodifferenceequationspressure-velocitycouplingwhichweresolvedbytheclassicsimplealgorithm,andduringthecourseofnumericalsolution,meshself-adaptingtechnologywasapplied.Themainflowfieldstructuresofthewholesystemandeachpartofthecoldmodelwerestudiedbyanalyzingthesimulationresults.

简介：In-situwhite-beamsynchrotronradiationtopographicobservationsunderanelectricfieldhavebeenmadeonKTiOPO4familycrystals.Theinvestigationshowsastrongenhancementofdiffractedintensityofhklreflections(l≠0)andthetopographicextinctioncontrast,whenthefieldisappliedalongthepolaraxis.Dopedandundopedsampleswithgrown-indefectsarestudiedindetail.ItisbelievedthatthemovementofK^+ionsdrivenbythefieldleadstoalocalaccumulationofchargesandthelatticedistortion.Allthefield-relatedphenomenaappeartoberelatedtotheone-dimensionalionicconductance.

简介：在chiralp波浪超导体的impurity-field-induced和magnetic-field-inducedquasiparticle状态被自我一致地解决Bogoliubov-deGennes方程理论上调查。在强壮的散布限制，我们发现到杂质的通用州的界限能为单个无磁性的杂质和单个磁性的杂质被导致。而且，我们发现不同chiral命令参数和相应超电流在线性杂质附近有一致分布。状态的本地密度的计算面对一个外部磁场证明在旋涡核心的零精力的Majorana模式的紧张山峰能被调节外部磁场的力量或配对相互作用戏剧性地提高。

简介：AnumericalwaveflumeisconstructedbasedontheReynoldsAveragedNavier-Stokes(RANS)equationswithturbulenceclosurebyamodifiedk-εmodeltostudytheviscousinteractionsofwaveswithverticalbreakwatersfordifferentovertoppingcases.Thegoverningequations,theturbulencemodel,boundaryconditions,andsolutionmethodforthenumericalwaveflumeareintroducedbriefly.Thereliabilityofthenumericalwaveflumeisexaminedbycomparingthenumericalresultswiththeexperimentalmeasurements,andgoodagreementsbetweenthemindicatethevalidityofthepresentmodel.Thedevelopmentsofmeanvelocityfields,thecontoursofvorticity,andtheinfluencesofwavenonlinearityonturbulencefieldaswavepassingthroughverticalbreakwatersarediscussedindetailbasedonthenumericalresults.Itisnotedthatthevorticesattherearofthelowersubmergedbreakwaterareclosetothebottomandmaybeinducethescouringtotheleesidetoeofmarinestructureinpractice.Overall,aconclusioncanbeobtainedfromthisstudythattheturbulenceinwavefieldaroundstructureisinduceddirectlybythedevelopmentofboundarylayeronthesolidboundary,thenonlinearinteractionoffreesurfacewithobstacle,andtheplungingofovertoppingwaves.

简介：Athoroughunderstandingonthemechanicalpropertiesofcarbonnanotube(CNT)isessentialinextendingtheadvancedapplicationsofCNTbasedsystems.However,conductingexperimentstoestimatemechanicalpropertiesatthisscaleisextremelychallenging.Therefore,developmentofmechanisticmodelstoestimatethemechanicalpropertiesofCNTsalongwiththeintegrationofexistingcontinuummechanicsconceptsiscriticallyimportant.ThispaperpresentsacomprehensivemoleculardynamicssimulationstudyonthesizedependencyandpotentialfunctioninfluenceofmechanicalpropertiesofCNT.Commonlyusedreactivebondorder(REBO)andadaptiveintermolecularreactivebondorder(AIREBO)potentialfunctionswereconsideredinthisregard.Young'smodulusandshearmodulusofCNTsarederivedbyintegratingclassicalcontinuummechanicsconceptswithmoleculardynamicssimulations.TheresultsindicatethatthepotentialfunctionhasasignificantinfluenceontheestimatedmechanicalpropertiesofCNTs,andtheinfluenceofpotentialfieldismuchhigherwhenstudyingthetorsionalbehaviourofCNTsthanthetensilebehaviour.

简介：与1°x的分辨率基于活跃外壳的块构造，全新统活断层和波速结构1°，为中国大陆的构造压力紧张域的一个二维的有限元素模型在纸被构造。用GPSmeasurements，然后，为模型的速度边界条件被推出中国大陆的今日的压力紧张地的年变化模式被模仿。结果证明(1)在中国大陆的最近的构造变形的一般模式被它的包围盘子的相互作用管理，哪个，印度板起一个主要作用。在中国大陆的西方有指导NNE的速度分布。最大值滑倒率出现在碰撞边界。指导北方的部件减少，当指导theeast的部件从南方逐渐地增加到北方并且从西方到东方时。在东方部分，有一个一般指导东方的运动，与在中国大陆的今日的构造应力场经历了的指导南方的部件(2)的某个数量最近的年里的改进的过程，并且这个过程介绍作为中心从Qinghai-Xizang(西藏)高原向东放射的一个一般模式。一般模式类似于周围的构造应力场，显示中国大陆上的当代的构造变形的继承。(3)最大的主要紧张介绍在东方在西方和low高的一个明显的模式。在西方的构造运动在东方是比那强壮的。Largeactive差错都位于最大的主要紧张的高值的地区。然而，紧张的大小在活跃的外壳的块的内部是更小的，它被这些差错围住。(4)四川云南区域的压力紧张地是唯一的。它不能被盘子的碰撞独自管理但是外部活跃的块的运动的联合，在下地壳或上地幔和特殊构造几何学的材料流动(例如东方喜玛拉雅的句法)也。

简介：Anaxisymmetricfiniteelementmodelisdevelopedtosimulatethetemperaturefieldofresistantspotweldingaccordingtotheprocesscharactersofnuggetformationofnon-equalstainlesssteelsheets.Asimulationmethodoftheinteractionofelectricalandthermalfactorsispresented.Thespotweldingprocessofnuggetformationissimulatedusinghardandsoftweldingtechniquenorms.Theheatingcharactersofsoftandhardnormsdeterminethedifferencesintheprocessofnuggetformationanddeterminethefinallyshapeandoffsetofnugget.Experimentalverificationshowsthatthemodelpredictionagreeswellwiththepractical.

简介：Inthepresentwork,verticallyalignedZnOnanorodarrayswithtunablesizearesuccessfullysynthesizedonnonseededITOglasssubstratesbyasimpleelectrodepositionmethod.Theeffectofgrowthconditionsonthephase,morphology,andorientationoftheproductsarestudiedindetailbyX-raydiffraction(XRD),scanningelectronmicroscopy(SEM),andtransmissionelectronmicroscopy(TEM).Itisobservedthattheas-preparednanostructuresexhibitapreferredorientationalongcaxis,andthesizeanddensityoftheZnOnanorodcanbecontrolledbychangingtheconcentrationofZnCl2.Fieldemissionpropertiesoftheas-synthesizedsampleswithdifferentdiametersarealsostudied,andtheresultsshowthatthenanorodarrayswithasmallerdiameterandappropriateroddensityexhibitbetteremissionproperties.TheZnOnanorodarraysshowapotentialapplicationinfieldemitters.

简介：在这份报纸，分析了是在直角的频率分割的标志同步算法复合(OFDM)系统，并且完成是粗糙、精致的同步算法的硬件电路设计。基于粗糙、精致的同步算法的分析，多路，模块累加器，部门和输出判断，它能显然保存硬件资源费用。电路顺序和设计计划的波浪表格模拟的分析证明建议方法高效地减少系统资源和电源消费。

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简介：Atheoreticalinvestigationiscarriedoutintothecrossphasemodulation(XPM)inanasymmetricdoubleAlGaAs/GaAsquantumwellsstructurewithacommoncontinuum.Itisfoundthat,combiningresonanttunneling-inducedtransparencyandconstructiveinterferenceinthethird-orderKerreffect,agiantXPMcanbeachievedwithvanishinglinearandnonlinearabsorptions,accompaniedbythevelocitiesoftheprobeandsignalfieldsbeingmatched.Furthermore,thisgiantXPMcouldinduceaπ-phaseshiftatasingle-photonlevelwhichisfavorablefortheapplicationsintwo-qubitquantumlogicgates.

简介：在这研究，我们在场把跨洞的他们数据转变成内部井的抵抗力分发的一种实际技术。先验的信息限制被合并到一个反复的调整倒置过程，可变粗糙被增加进倒置进程。有限元素近似基于一二并且一一半维(2.5D)模型为前面的问题和为构造敏感矩阵和合成数据需要的问题设置了的“伪forward”被开发了。调整最少平方的倒置计划，抑制了，先验的信息从井日志获得了，被采用重建从二个合成电磁的数据集合的内部井的抵抗力侧面和领域数据在Gudao油领域里获得了，华东。敏感矩阵的部分衍生物被伴随方程基于交换原则计算。倒置结果合成并且地数据例子建议我们的方法面对在地数据的随机的噪音柔韧、稳定并且能被用于跨洞的他们地数据解释。