简介：

简介：Inthispaper,wederivethebi-Hamiltonianstructureofamulti-componentCamassa–Holmsystem,whichassociateswiththemulti-componentAKNShierarchyandmulti-componentKNhierarchyviathetri-Hamiltoniandualitymethod.Furthermore,thespectralproblemsofthedualhierarchiesmaybeobtained.

简介：Stabledual-modesemiconductorlaserscanbeappliedforthephotonicgenerationofmicrowaveandterahertzwaves.Inthispaper,themodecharacteristicsofavariablecurvaturemicroresonatorareinvestigatedbyatwodimensionalfiniteelementmethodforrealizingstabledual-modelasing.Themicroresonatorfeaturesasmoothboundaryandthesamesymmetryasasquareresonator.Asmallvariable-curvaturemicroresonatorwitharadiusof4μmcansupportthefundamentalfour-bouncemodeandthecircular-likemodesimultaneously,withqualityfactorsuptotheorderof10~4and10~5,respectively.ThedualmodesinthephasespaceofthePoincarésurfaceofsectionsdistributefarfromeachotherandcanmaintainenoughstabilityfordual-modelasing.Furthermore,therefractiveindexandwaveguidecanmodulatethedual-modewavelengthdifferenceandqualityfactorsefficientlythankstothespatiallyseparatedfieldsofthesetwomodes.

简介：AdualSshapedmicrostripantennawitharealisticfeedisproposedforgenerationoftiltedbeamradiationpatternpertainingforbeamsteeringapplications.Toachievethis,fourfeedingpointsarelocatedatadistanceof5.6mmfromtheantennacentre.Thesefeedingpointswhenexcitedonebyonegeneratefourtiltedbeamsinfourdifferentspacequadrants,thusyieldingabeamsteerableantenna.Importantly,sincetheproposedantennaissymmetricalinthestructure,allthefourtiltedbeamshavethesameradiationpatterncharacteristics.Afurtherenhancementoftheantennabandwidthisalsoachievedusing100-μmcapacitivecouplingbetweenthefeedandtheantennastrip.

简介：有一个压电的致动器(D-MFPA)的一个双方面的多重扇子系统，它能驾驶八把被动颤动扇子并且提供二方向性的空气由使用仅仅一个压电的致动器流动，在这研究被调查了。而且，扇子图案的二种类型，viz。磁性的扇子(MF)和合成磁性的扇子(CMF)也被探索。在MF的调查，当碳纤维板(L)的长度从55公里减少了到35公里，结果显示D-MFPA的回声频率从27.6Hz增加了到66Hz。它也减少了到4.8公里的从12.4mm的D-MFPA的振幅。为CMF，当时，结果证明回声频率减少了Mylar板的长度(增加的El)，和最大的减少从66Hz到45Hz什么时候L=35公里和El=30公里。无尺寸的热传送对流数字(MD-MFPA)被定义描述并且确定在热表演的改进。结果证明单身的压电的扇子的最佳的MD-MFPA为使一热来源凉下来是1.58。由对比，在一样的电源消费下面，D-MFPA不仅使二热来源凉下来而且显示了更好热的性能。

简介：我们调查在中国顶由城市的公共交通网络(UPTN)例示的复杂网络的拓扑的特征--十个最大的城市。UPTN有小世界行为，这被发现，由他们的拓扑的参数的考试。UPTN的运输效率的定量分析例如揭示他们的更高本地的效率E-l和更低的全球效率，它仍然在他们的发展中的阶段与那些中国城市的现状与一致很好。而且，在UPTN的效率的拓扑的性质也被检验，并且调查结果在一方面，显示那theUPTNs表演坚韧性到到对全球规模的恶意的攻击的随机的攻击和易碎性；在另外的手，在UPTN效率之间的相互关系和网络主题值得我们的注意。互连UPTN效率的主题总是是三角形形式的模式，例如主题标志238，标志174和标志102，等等。

简介：A16-channeldualtuningwavelengthdivisionmultiplexer/demultiplexerbasedonsilicononinsulatorplatformisdemonstrated,whichisbothpeakwavelengthtunableandoutputopticalpowertunable.Thewavelengthdivisionmultiplexer/demultiplexerconsistsofanarrayedwaveguidegratingforwavelengthdivisionmultiplexing/demultiplexing,aheaterforpeakwavelengthtuningandavariableopticalattenuatorbasedonp–i–ncarrier-injectionstructureforopticalpowertuning.Theexperimentalresultsshowthattheinsertionlossonchipofthedeviceis3.7dB–5.7dBandthecrosstalkis7.5dB–9dB.Forthetunabilityofthepeakwavelength,1.058-nmwavelengthtunabilityisachievedwith271.2-mWpowerconsumption,andtheaveragemodulationefficiencyis3.9244nm/W;forthetunabilityoftheopticalpower,theopticalpowerequalizationisachievedinall16channels,20-dBattenuationisachievedwith144.07-mWpowerconsumption,andtheraise/falltimeofVOAis35ns/42ns.

简介：Anultrathin,planar,broadbandmetalenscomposedofmetalrectangularsplit-ringresonators(MRSRRs)hasbeendesigned,whichshowsdual-polaritycharacteristicsfordifferenttypesofcircularlypolarized(CP)lightincidence.Thedesignedmetalenscanbeconsideredasthefocusinglensandthediverginglensunderleft-handedCPandright-handedCPlightincidence,respectively.Thephasediscontinuityofthecross-polarizedtransmissionlightisproducedbyoptical-axisrotationthroughmodulatingtwoarms’lengthsoftheMRSRR.TheMRSRRmetalenspossessesawavelength-controllablefocallengthandarelativelylargerchromaticaberrationcomparedwiththeconventionallenses.Andthefocallengthchangesfrom9to7μmwithincidentwavelengthfrom740to950nm.Thedual-polarityflatmetalensopensadoorfornewapplicationsofphasediscontinuitydevices,anditwillpromotethefabricatingcapabilityofon-chiporfiber-embeddedopticaldevices.

简介：在那里存在，这被证明迪拉克的一个向量代表“在它等价于的一意义的s旋量Geldand双性人四元数(即complexified四元数)表示。这能被看作Cartan的归纳“到迪拉克的triality的s想法”s旋量。在向量表示，一阶的DiracLagrangian对拓扑地巨大的计量器地的two-orderLagrangian双等价物。潜力删除哪个对应于Diracfield被使用主人获得(或父母)行动途径。新奇计量器删除是自我双的并且包含反对称的李和对称的乔丹结构。

简介：有表面结果的supercooled水微滴的碰撞一个目标在表面上创造冰生长。在任何冷环境的糖衣问题在预防和预言技术上在飞机，和很多研究上导致严重损坏因为糖衣到目前为止被进行了。因此，知道冻结supercooled水微滴的机制改进反的详细是很重要的--并且除冰的设备和糖衣模拟代码。影响目标表面的单个supercooled水微滴的糖衣机制将为目的给我们大卓见。在现在的学习，我们开发一种双光的成像技术测量在不同温度条件下面影响表面的supercooled水微滴的解决时间的温度。我们使用这种技术测量水微滴的准确温度，并且讨论结冰过程的详细。

简介：

简介：Inthispaperwepresentanovelnanoantenna(nantenna)designforenergyharvesting.Thenantennahasan'E'shapeandisplacedonaSiO2substrate.ItsoperationisbasedontheexcitationofsurfaceplasmonpolaritonsthroughthegoldarmsoftheEshape.Byvaryingthelengthsandwidthsofthearms,twooverlappingworkingbandwidthscanbeachieved.Thisresultsinawidebandbehaviorcharacterizedbyafullwidthathalf-maximumofabout2.2μmcenteredaround3.6μm.TwoorthogonalEnantennasareplacedperpendiculartoeachothertorealizeadual-polarizednantenna.Thisnantennacanreceivethetwoincidentpolarizationsattwoseparategaplocationswithveryhighisolation.Theproposedstructurecanbeusedinseveralenergyharvestingapplications,suchasscavengingtheinfraredheatfromtheEarthandotherhotobjects,inadditiontoopticalcommunications.

简介：Thedoubleconstraintequationsintheself-dualgravitationaltheorycontainingthecosmologicaltermarederivedin3+1gravity.Furthermore,inordertodeeplystudytheLorentzianandEuclideanrealityconditionsforthistheory,therelationsbetweenconstraintsarediscussedbyintroducingthedoubleconstantconformaltransformationandthedoublecomplexfunctionmethod.

简介：Inthispaper,wepresentamode-selectivecouplerbasedonadual-coreall-solidphotonicbandgapfiber（AS-PBGF）.Becausetheyareall-solid,AS-PBGF-basedmodeconvertersareeasiertosplicetootherfibersthanthosebasedonair-holephotoniccrystalfibers.ModeconversionsbetweentheLP01andLP11modes,LP01andLP21modes,andLP01andLP02modesareobtainedatthewavelengthλ=1550nm.The3dBwavelengthbandwidthofthesemodeconvertersare47.8,20.3,and20.3nm,respectively.

简介：我们在CHF313.56MHz/2MHz调查中间的煤气的阶段双频率电容地联合血浆(CCP)因为蚀刻的SiCOH低绝缘的常数(low-k)电影，和2MHz的效果在激进分子上驱动集中。在13.56MHzCCP的CHF3的主要分离反应是低分离契约精力反应，它导致低F和高CF2集中。2MHz力量的增加能提起高分离契约精力反应的概率并且当几乎把CF2作为集中时，导致F集中的增加一个常数，它具有蚀刻的SiCOHlow-k电影的优点。激进的空间一致性依赖于二来源联合的力量。然而，2MHz力量的增加导致差的一致性一致性能被增加13.56MHz力量改进。

简介：Weproposeandexperimentallydemonstrateanovelultracompactdual-modewaveguidecrossingbasedonsub-wavelengthmultimode-interferencecouplersforadenselyintegratedon-chipmode-divisionmultiplexingsystem.Byengineeringthelateral-daddingmaterialindexandmanipulatingphaseprofilesoflightatthenanoscaleusinganimprovedinversedesignmethod,asubwavelengthstructurecouldtheoreticallyrealizetheidenticalbeatlengthforbothTE0andTE1,whichcanreducethescaleofthedevicegreatly.Thefabricateddeviceoccupiedafootprintofonly4.8μm×4.8μm.Themeasuredinsertionlossesandcrosstalkswerelessthan0.6dBand-24dBfrom1530nmto1590nmforbothTE0andTE1modes,respectively.Furthermore,ourschemecouldalsobeexpandedtodesignwaveguidecrossingsthatsupportmoremodes.

简介：隐藏的对称和一个无限的集合广告5S5上的格林Schwarz超弦的非局部的保存水流被Bena等指出了。在这篇论文，我们证明在MaurerCartan方程和运动的方程之间双的农夫在格林Schwarz超弦的moduli空格给隐藏的对称。因此由扭曲的转变vielbeins，我们能表示纸的水流[我。Bena，J。Polchinski，和R。Roiban，Phys。加快。D69(2004)046002]作为宽松的连接由一唯一光谱参数。

简介：Graphitehasbeencurrentlyconsideredasapromisingcathodematerialindualionbatteries(DIBs)duetoitsuniquefeaturesofsp2hybridizedcarbonandstackedtwo-dimensionallayeredstructures.However,unexpectedvolume/thicknesschangesinthegraphitecathodes,inducedbytheintercalation/deintercalationofanionswithlargemolecularsizehavebeenknowntobeacriticalproblemindesigningDIBcells.Tounderstandthevolume/thicknesschangesintheDIBelectrodes,inoperandoopticalobservingapparatushasbeenemployedtoobservethecross-sectionviewofagraphite-basedcathodeuponcyclesinthepresentwork.Theobservationsuggeststhatthecathodeinitiallypresentedahugeirreversiblethicknesschange(60%),andsuchthicknessvariationwaspronetoreduceandremain<20%inthefollowingcycles.Theresultsfrombothinoperandoobservationandelectrochemicalcharacterizationscollectivelyindicatethatthegreaterthicknessvariationatinitialcycleshouldbeattributedtobothanionintercalationintographite-basedcathodesandirreversibledecompositionofchemicalcomponentsintheDIBsystem.Themethodherehighlightsauniversalrouteforfundamentallyunderstandingtheelectrodesofhugevolumevariation.

简介：一种极端狭窄的双隧道的过滤器原则上被建议anddemonstrated试验性地。这个过滤器借助于二个取样的纤维布拉格栅栏(SFBG)被设计，在一个人是周期的0-pi采样，其它是对称的空间采样的地方。Theformer能在传播系列创造二stopbands，后者能生产twoultra-riarrow通带。我们的过滤器有大约1下午的3-dB带宽，其价值是二ordersof大小不到传统的SFBG过滤器的带宽。建议过滤器有隧道间距仍然是的amerit未改变当调节过滤器时。

简介：Dual-pumpedmicroring-resonator-basedopticalfrequencycombs(OFCs)andtheirtemporalcharacteristicsarenumericallyinvestigatedandexperimentallyexplored.ThecalculationresultsobtainedbysolvingthedrivenanddampednonlinearSchr?dingerequationindicatethatanultralowcoupledpumppowerisrequiredtoexcitetheprimarycombmodesthroughanon-degeneratefour-wave-mixing(FWM)processand,whenthepumppowerisboosted,boththecombmodeintensitiesandspectralbandwidthsincrease.Atlowpumppowers,thefieldintensityprofileexhibitsacosinevariationmannerwithfrequencyequaltotheseparationofthetwopumps,whilearollTuringpatternisformedresultingfromtheincreasedcombmodeintensitiesandspectralbandwidthsathighpumppowers.Meanwhile,wefoundthatthepowerdifferencebetweenthetwopumpfieldscanbetransferredtothenewlygeneratedcombmodes,whicharelocatedonbothsidesofthepumpmodes,throughacascadedFWMprocess.Experimentally,thedual-pumpedOFCswererealizedbycouplingtwoself-oscillatingpumpfieldsintoamicroringresonator.ThenumericallycalculatedcombspectrumisverifiedbygeneratinganOFCwith2.0THzmodespacingover160nmbandwidth.Inaddition,theformationofarollTuringpatternathighpumppowersisinferredfromthemeasuredautocorrelationtraceofa10freespectralrange(FSR)OFC.Theexperimentalobservationsaccordwellwiththenumericalpredictions.Duetotheirlargeandtunablemodespacing,robustness,andflexibility,theproposeddual-pumpedOFCscouldfindpotentialapplicationsinawiderangeoffields,includingarbitraryopticalwaveformgeneration,high-capacityopticalcommunications,andsignal-processingsystems.