简介：Weproposeandexperimentallydemonstratecompacton-chip1×2wavelengthselectiveswitches(WSSs)basedonsiliconmicroringresonators(MRRs)withnestedpairsofsubrings(NPSs).OwingtotheresonancesplittinginducedbytheinnerNPSs,theproposeddevicesarecapableofperformingselectivechannelroutingatcertainresonancewavelengthsoftheouterMRRs.SystemdemonstrationofdynamicchannelroutingusingfabricateddeviceswithoneandtwoNPSsiscarriedoutfor10Gb∕snon-return-to-zerosignal.Theexperimentalresultsverifytheeffectivenessofthefabricateddevicesascompacton-chipWSSs.

简介：Atheoreticaldesignispresentedfora1×Mwavelength-selectiveswitch（WSS）thatroutesanyoneofNincomingwavelengthsignalstoanyoneofMoutputports.Thisplanaron-chipdevicecomprisesofa1×Ndemultiplexer,agroupofNswitching'trees'actuatedbyelectro-opticalorthermo-opticalmeans,andanM-foldsetofN×1multiplexers.Treesutilize1×2switches.TheWSSinsertionlossisproportionalto(log2（M+N+1）)Alongwithcrosstalkfromtrees,crosstalkispresentateachcross-illuminatedwaveguideintersectionwithintheWSS,andthereareatmostN-1suchcrossingsperpath.TheselossandcrosstalkpropertieswilllikelyplaceapracticallimitofN=M=16upontheWSSsize.Byconstrainingthe1×2switchingenergyto1fJ∕bit,wefindthatresonant,narrowband1×2switchesarerequired.The1×2devicesproposedherearenanobeamMach–Zehndersandasymmetriccontra-directionalcouplerswithgratingassistance.

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简介：为研究空间用四结太阳电池中InGaAsP/InGaAs子电池在电子辐照条件下的性能衰退情况,对InGaAsP/InGaAs双结电池开展了1MeV电子辐照试验,测试了辐照前后的电学参数和量子效率,分析讨论了参数退化情况.结果表明：随着电子注量和位移损伤剂量的增加,电池性能参数退化程度逐渐加大;由位移损伤缺陷导致的载流子寿命减小,是导致电池短路电流和开路电压下降的主要原因;InGaAsP/InGaAs双结电池基区损伤比发射区损伤更加严重,因此,提高其抗辐射能力的关键在于优化基区结构.

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简介：Magnetoplasmonicsensorsareattractivecandidatesforultrasensitivechemicalandbiomedicalsensorapplications.Avarietyofferromagneticmetalthinfilmshavebeenusedformagnetoplasmonicdeviceapplications,yetthedependenceofsensorperformanceontheopticalandmagneto-opticalpropertiesofferromagneticmetalmaterialshasbeenrarelystudied.Inthiswork,wereportthestudyofenhancedmagneto-opticalKerreffect（MOKE）andsensingperformanceinAu∕FexCo1-xbilayermagneto-opticalsurfaceplasmonresonance（MOSPR）transducers.TheopticalconstantsofFexCo1-x（x=0,0.29,0.47,0.65,and1）inasputter-depositedAu∕FexCo1-xdevicearecharacterizedbytheattenuatedtotalinternalreflection（ATR）method.FexCo1-xthinfilmsshowdifferentMOKEsasafunctionofthechemicalconcentration,withthehighesttransverseMOKEsignalobservedinFe0.7Co0.3.Indexsensingperformanceiscloselyrelatedtothematerial’sopticalandmagneto-opticalconstants.BystudyingthesensingperformanceintheparameterspaceoftheAu∕FexCo1-xbilayerthicknesses,thehighestsensitivityisfoundtobe0.385（theoretical）and0.306RIU-1（experimental）intheAu∕Fe0.7Co0.3MOSPRdevices.OurresearchhighlightstheinfluenceoftheopticalpropertiesofferromagneticmaterialtodevicesensitivityinMOSPRtransducers.ThehighsensitivityinAu∕FexCo1-xMOSPRdevicesmakethesestructuresattractivecandidatesforchemicalandbiomedicalsensingapplications.

简介：AseriesofRbxCs1-xAg4I5(x=0-1)thinfilmsweregrownbyvacuumevaporationonNaCIcrystalsubstratesat350K.Theabsorptionspectraofthesefilmsweremeasuredat80Kinthewavelengthrangefrom240nmto400nm.ItisshownthatsuperionicconductorthinfilmsofquaternarycompoundRb0.5Cs0.5Ag4I5andternarycompoundRbAg415canbeobtainedatx=0.5-0.6andx=0.7-1,respectively.Atx=0.65,thecombinedcompoundfilmofthemixtureof30mol%RbAg4I5and70mol%Rb0.5Cs0.5Ag4I5ispresented.Then,basedonthespectralpositionsoftheA1andA2peaks,wedeterminedthattheRb0.5Cs0.5Ag4I5excitoncouplingenergyRexis0.21eV,theforbiddenzonewidthEgis3.82eVandtheexcitonradiusaexis0.70hm.Furthermore,theionicconductivitiesofsuperionicconductorthinfilmsofRbAg4I5andRb0.5Cs0.5Ag4I5andtheirmixturefilmareinvestigated,respectively,inthetemperaturerange303K-393K.

简介：Inthispaper,adetailedLiesymmetryanalysisofthe(2+1)-dimensionalcouplednonlinearextensionofthereaction-diffusionequationispresented.Thegeneralfinitetransformationgroupisderivedviaasimpledirectmethod,whichisequivalenttoLiepointsymmetrygroupactually.Similarityreductionandsomeexactsolutionsoftheoriginalequationareobtainedbasedontheoptimalsystemofone-dimensionalsubalgebras.Inaddition,conservationlawsareconstructedbyemployingthenewconservationtheorem.

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简介：Ceria-zirconiasolidsolutionhasbeenpreparedbytheureagrindcombustionandcitricacidsol-gelmethodsforcatalyticapplicationsasoxygenstorage/releasematerialsinthisstudy.Thepropertiesandoxygenstorage/releasecapacitiesofsampleswithdifferentZrcontentswerecharacterizedandevaluatedbyX-raydiffraction（XRD）,N2adsorption,scanningelectronmicroscopy（SEM）,Ramanspectroscopy,andinsituCO–CO2loopingtest.Theresultsdemonstratethatthesamplespreparedbytwomethodsareallofexcellentlattice[O]release/storagepropertiesandmaintaingoodlong-termcyclestability.ButthepreparationmethodsignificantlyimpactsthehomogeneityofsamplesrelatedtotheirredoxpropertiesandthecontentofZrover20%,whichgreatlychangedthepropertiesofceria-zirconiasolidsolutionsandcausedtheirchangingofcrystallinesymmetryfromcubictotetragonal.Thesamplespreparedbycitricacidsolgelmethodareofmorehomogeneousparticlesizesandhigherspecificsurfaceareasthanthatbyureagrindcombustionmethod,whichisbenefittotheoxygenreleaseratherthanoxygenstorage.ThebulkoxygenamountmigratedtosurfaceincreaseswiththeincreasingZrcontent,however,theamountoflatticeoxygenmigrationdecreaseswhenZrcontentisover20%.WhenZrcontentis20%,thedifferencesofstorage/releasecapacitiesfromtwodifferentpreparationmethodsarereducedathightemperatureinthelong-termloopreaction.

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简介：Effectsofspacevelocity,reactiontemperatureandsupportacidityonproductdistributionandinductionperiodin1-buteneisomerizationandmetathesisoverMo/mordenite-aluminawereinvestigated.Asrevealedbythecatalyticperformanceresults,inductionperiodandobjectiveproductwerecloselyrelatedtothereactionconditions.Lowerspacevelocityledtolongerinductionperiodandhigherpropeneyield.Theoptimalreactiontemperatureforpropeneproductionisaround150Canditshiftedto100Cforetheneproduction.1-Buteneauto-metathesispredominatedinthereactionnetworkifthesupportwithlowerdegreeofsodiumexchanged.Andpropenegraduallybecamethedominantproductuponincreasingthesupportsodiumexchangedegree.6Mo/H100Na0M-30Alcatalystwithasupportoffullsodiumexchangedegreeexhibitedthehighestpropeneyield.

简介：详细地研究了LS1垫层在同一应力水平下，不同温度对其加速老化规律的影响。按照永久变形试验标准加工试样，然后对其进行长期加载，大小为对垫层进行45％压缩。加载以后的样品分别放入45，65℃和75℃的烘箱内，进行长时间加速老化；又分别在40，80，120d和160d的不同时间段内取出样品进行测试；分别测试了取出样品的质量、永久变形量、压缩性能、松弛性能、动态力学性能以及红外光谱。

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简介：Takingthe(2+1)-dimensionalBroer-Kaup-Kupershmidtsystemasasimpleexample,somefamiliesofrationalformsolitarywavesolutions,triangularperiodicwavesolutions,andrationalwavesolutionsareconstructedbyusingtheRiccatiequationrationalexpansionmethodpresentedbyus.Themethodcanalsobeappliedtosolvemorenonlinearpartialdifferentialequationorequations.

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简介：人们一直尝试合成可以替代现今高能炸药的新型炸药，期望新型炸药在相同的感度水平有更高的性能，或者在相同的性能水平下有更低的感度。1，1-二氨基-2，2-二硝基乙烯（简称FOX-7）就是在这种要求下研究较为活跃的一种新型低感炸药。文献报道FOX-7有3种或4种相态，在室温下存在α相，在113℃转变成β相，下一个相变开始于160℃或170℃。文中利用四圆衍射仪测定FOX-7的晶体结构，变温X射线衍射仪（XRD）研究FOX-7在加热时发生的相变。

简介：Inthispaper,first,weemployclassicLiesymmetrygroupsapproachtoobtaintheLiesymmetrygroupsofthewell-known(2+1)-dimensionalGeneralizedSasa-Satsuma(GSS)equation.Second,basedonamodifieddirectmethodproposedbyLou[J.Phys.A:Math.Gen.38(2005)L129],moregeneralsymmetrygroupsareobtainedandtherelationshipbetweenthenewsolutionandknownsolutionissetup.Atthesametime,theLiesymmetrygroupsobtainedareonlyspecialcasesofthemoregeneralsymmetrygroups.Atlast,someexactsolutionsofGSSequationsareconstructedbytherelationshipobtainedinthepaperbetweenthenewsolutionandknownsolution.