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32 个结果
  • 简介:Thispaperpresentsamethodusingsimplephysicalvapourdepositiontoformhigh-qualityhafniumsiliconoxyni-tride(HfSiON)onultrathinSiO2bufferlayer.Thegatedielectricwith10A(1A=0.1nm)equivalentoxidethicknessisobtained.TheexperimentalresultsindicatethatthepreparedHfSiONgatedielectricexhibitsgoodphysicalandelectricalcharacteristics,includingverygoodthermalstabilityupto1000C,excellentinterfaceproperties,highdielectricconstant(k=14)andlowgate-leakagecurrent(Ig=1.9×103A/cm2@Vg=Vfb1VforEOTof10A).TaNmetalgateelectrodeisintegratedwiththeHfSiONgatedielectric.TheeffectiveworkfunctionofTaNonHfSiONis4.3eV,meetingtherequirementsofNMOSforthemetalgate.And,theimpactsofsputteringambientandannealingtemperatureontheelectricalpropertiesofHfSiONgatedielectricareinvestigated.

  • 标签: 高K值栅物质 二维模型 HFSION 物理 化学汽相沉积
  • 简介:原子的电的偶极子polarizabilities在许多不同物理应用是很重要的,例如精确原子频率标准。这些性质的计算很重要、挑战性。我们建议计算策略由使用电子关联能足够地被考虑的一套高质量的轨道的底变化地与高精确计算频率依赖者偶极子polarizabilities。Na的扎根的状态的静态的polarizabilities被如此的一个方法精确地计算并且能直接与精确实验测量相比。计算结果在对在大约0.1%以内的可得到的试验性的大小的优秀同意,它表明我们的策略的有效性。我们的计算策略有一个宽用法,不是仅仅在polarizibilies,而且在象散布的电子原子的理论处理那样的另外的地里处理。用一样的轨道的底,我们执行Na的精确计算[?]亲密关系。我们的计算亲密关系在对在0.1%以内的精确激光光谱学大小的优秀同意。[从作者抽象]

  • 标签: 计算结果 原子频标 极化率 物理量 电子相关性 物理应用
  • 简介:Analternateyetgeneralformoftheclassicaleffectivethermalconductivitymodel(Maxwellmodel)fortwo-phaseporousmaterialsispresented,servinganexplicitthermo-physicalbasis.Itisdemonstratedthatthereducedeffectivethermalconductivityoftheporousmediaduetonon-conductingporeinclusionsiscausedbythemechanismofthermalstretching,whichisacombinationofreducedeffectiveheatflowareaandelongatedheattransferdistance(thermaltortuosity).

  • 标签: Maxwell模型 两相多孔介质 物理基础 热拉伸 有效导热系数 一般形式
  • 简介:1,2-Diarylacetylenes被与乙酰氯化物和结果的ethene氯化物的消除由diaryl酉同类的增加组成的一个灵巧的方法综合了。在1,2-diarylacetylene的物理性质和结构之间的关联被微分扫描学习了热量计(DSC),折射媒体和电镀物品光的参数测试仪器。结果证明birefringence与把cyclohexyl插入到骨骼,而是mesophase范围被增加,融化并且变清点与在分子,和birefringence介绍乙烯桥被减少,粘性,空地点和mesophase变化都能与perfluoroalkyl/alkoxyl终端被减少而不是alkyl/alkoxyl一半。

  • 标签: 合成 1 2-二芳乙酰烯 相关性 结构 物理性质 环己基
  • 简介:AmodelofcrosslinkerunbindingisimplementedinahighlycoarsegrainedgranularmodelofF-actincytoskeleton.WeemploythisspecificgranularmodeltostudythemechanismsofthecompressiveresponsesofF-actinnetworks.ItisfoundthatthecompressiveresponseofF-actincytoskeletonhasdependencyonthestrainrate.TheevolutionofdeformationenergyinthenetworkindicatesthatcrosslinkerunbindingeventscaninducetheremodellingofF-actincytoskeletoninresponsetoexternalloadings.TheinternalstressinF-actincytoskeletoncanefficientlydissipatewiththehelpofcrosslinkerunbinding,whichcouldleadtothespontaneousrelaxationoflivingcells.

  • 标签: F-肌动蛋白 物理机制 交联剂 绑定 网络 肌动蛋白细胞骨架
  • 简介:WehavesynthesizedandinvestigatedphysicalpropertiesoftwonewquaternarycompoundsGd2CoAl4T2(T=Si,Ge)singlecrystals,whichareisostructuraltoTb2NiAl4Ge2andEr2CoAl4Ge2.Themostimportantstructuralfeatureofthesematerialsistheanti-CaF2-typeCoAl4T2slabs.Thesematerialsshowmetallicbehaviorbelow300Kandthereisalong-rangeantiferromagnetic(AFM)transitionappearingat20and27KforGdCoAl4Ge2andGd2CoAl4Si2,respectively.ResistivityandheatcapacitymeasurementsalsoconfirmthesebulkAFMtransitions.Furtheranalysisindicatesthatthislong-rangeantiferromagnetismshouldresultfromthemagneticinteractionbetweenlocalmomentsofGd^3+ions.

  • 标签: magnetic MAT erials RARE earth COMPOUNDS