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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.

简介：基于萤火虫算法（FA）全局搜索能力强、粒子群优化算法（PSO）局部优化效果出色的特点,提出一种新型混合优化算法,FAPSO,它融合了PSO和FA的迭代机制,增加了群体多样性。仿真结果表明：FAPSO的全局极值逼近精度、收敛速度及算法鲁棒性远好于PSO、FA和实数遗传算法（GA）;将FAPSO和PSO用来优化星载多波束抛物面天线的赋形波束,对比验证了FAPSO的良好性能,为波束赋形设计问题提供了新的思路。

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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.

简介：随着科学技术的发展，大学基础物理教育的作用和地位引起了科学家的极大关注。当前世界各国组织了一批优秀的物理学家和科学家正在研究和重新制定大学基础物理教育规划，使物理教育与现代科学技术的发展相适应。

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