简介：金属nanostructures展览专辑光回声模式在材料从传导性的电子的subwavelength监禁发源。这些回声模式在光学和察觉到的申请由于他们的申请潜力代表一个强壮的研究焦点。在这短评论，我们这块地里的组的最近的成就被加亮。先进金属性的nanostructures的湿化学的途径合成将被介绍，他们由电场的准确的放和操作被显示出。下次，为小分子的察觉的这些nanostructures的申请将在几个例子被描述。另外，金属nanostructures能被用于亚波长光集中并且为有效精力联合进聚合物链，这将被显示出。

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简介：ThehighlydispersedPt–ReOX(x≤1)sitesca.0.5nminsizewereformedviaasuccessiveandstronginteractionoftheReprecursorwithtitaniaandthenofthePtcomplexwithdepositedlow-valentrheniumoxideclusters.Thesize,chargeandchemicalcompositionwerecharacterizedbymeansofHRTEM/STEMwithEDXmapping,XPS,andFTIRS.ThesesiteswithRe/Pt=2wereshowntobehighlyactiveandselectiveinthehydrogenationofcarboxylicacidtoalcoholunderverymildconditions(T=130°C,P=50bar).ThereactionrateconstantforthehydrogenationofhexanoicacidincreasedlinearlywiththePtcontent.Asforthehomogeneouspincer-typeRu-organiccomplexes,theactivePt–ReOXsitescandissociateheterolyticallythemolecularhydrogenwiththeformationofhydroxylgroupsandPthydrideforhydrogenationofthecarboxylicgroup.Indeed,TOFof20h-1andselectivityof98%–99%areapproachingthevaluestypicalofhomogeneouscatalysts.Thefirstorderkineticsdescribedwelltheexperimentaldataobtainedinawiderangeofreactionconditions.

简介：Shortpulsedfiberlasershavebeenwidelymadeusingsingle-walledcarbonnanotubesasasaturableabsorber(SA).However,mostofthecurrentlyuseddevicescanonlyoperateinonedeterminedoperationstatewithanunchangeablemodulationSAdepthinthecavity,whichsignificantlylimitstheirapplicationinphotonicdevices.Inthispaper,well-alignedcarbonnanotubearraysaresynthesizedusingzeoliteAlPO4-5asatemplate,whichfeaturesanisotropicopticalabsorption.Thelinearopticalabsorptionoftheas-synthesizedcarbonnanotubearrayscaneasilybetunedbyadjustingapolarizationcontroller,thusprovidingatunablemodulationdepthforthecarbonnanotubeSA.ByexploitingthisSAinanerbium-dopedfiberlasercavity,bothQ-switchedandmodelockedpulsedlasersareachievedbysimplyadjustingapolarizationcontrollerunderafixedpumppowerof330mW.Inaddition,therepetitionrateoftheQ-switchingandpulsedurationofthemode-lockingcanbetunedaccordingtothevariationofmodulationdepth.Moreover,solitonmoleculescanbeobtainedwhenthemodulationdepthoftheSAis4.5%.

简介：使用活跃中心拍动的可能性控制方法，它是为一台单个阶段的压缩机的一个证明旋转货摊控制方法，到3阶段轴的压缩机试验性地被讨论，在复杂旋转货摊开始进程被观察的地方。研究压缩机是3阶段并且能为转子片和定子翼改变stagger角度背景。十六个转子片/定子翼配置模式被变化测试蹒跚为定子翼的角度。由表面压力变化的测量，货摊开始进程被调查，测量压力变化数据为旋转货摊被用作一个预兆的信号。货摊察觉系统在一台单个阶段的压缩机用于活跃中心拍动控制的试验性的结果表演能有用地与一个更复杂的货摊开始过程在一台3阶段压缩机被用于那。

简介：Inthepresentstudy,weinvestigatedtheeffectofceriumanderbiumdopingofthezirconiumdioxidematrix.Wesynthesizeddopedsamplesusinghydrothermalprocess.Theamountsofdopantusedwere0.5%,1%and5%molar(rareearthoxideoverzirconiumdioxide)respectively.ThesampleshavebeenstudiedviaX-rayDiffractionmeasurementsforthestructuralcharacterization.UVvisiblediffusereflectancewasusedfortheopticalanalysis,Brunauer-Emmett-Teller(BET)modelforthemeasurementofthesurfacearea.Finallythesampleshavebeenanalysedviaelectronparamagneticresonance(EPR)fortheelectroniccharacterization.Thenwetestedthenewsynthetizedmaterialstodeterminetheirphotocatalyticactivityinthereactionofdegradationofmethyleneblueperformedunderirradiationbydiodes(LEDs)emittingexclusivelyvisiblelight.

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简介：Anall-fiberacousto-opticmodulator（AOM）,whichfeaturesacompactstructureandalow-drivingvoltage,isexperimentallydemonstratedfortheactivemode-lockingofafiberlaser.TheproposedAOMisbasedontheshortlengthofthecladding-etchedfiber,theendsofwhicharefixedonaslideglass.Ontopofthecladding-etchedfiber,apiezoelectrictransducerwasoverlaid.Achemicalwet-etchingtechnique,whichisbasedonamixedsolutionofNH4Fand（NH4）2SO4,isusedtoreducethefiberdiameterdownto～25μm,andthelengthoftheetchedsectionisonly0.5cm.Thefabricateddeviceexhibitedamodulationdepthof73.10%atanacousticfrequencyof918.9kHzandapeak-to-peakelectricalvoltageof10V,whilealaserbeamwascoupledat1560nm.ByusingthepreparedAOMwithinanerbium-doped-fiberringcavity,themode-lockedpulseswithatemporalwidthof2.66pswerereadilyobtainedatarepetitionrateof1.838MHz.

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简介：NanosizedGa-containingZSM-5zeoliteswerepreparedviaisomorphoussubstitutionandimpregnationfollowedbycharacterizedusingvarioustechniques.Thecatalyticperformanceofthezeolitesforthearomatizationof1-hexenewasinvestigated.TheresultsindicatethatisomorphoussubstitutionpromotestheincorporationofGaheteroatomsintotheframeworkalongwiththeformationofextra-frameworkGaO+species（[GaO+]a）thathavestrongerinteractionswiththenegativepotentialoftheframework.Inaddition,basedonthePy-IRresultsandcatalyticperformance,the[GaO+]aspecieswithstrongerLewisacidsitesproducedabettersynergismwithmoderateBr?nstedacidsitesandthusimprovedtheselectivitytoaromaticcompounds.However,theimpregnationresultsintheformationofGa2O3phaseandsmallamountsofGaO+speciesthataremainlylocatedontheexternalsurface（[GaO+]b）,whichcontributetoweakerLewisacidsitesduetoweakerinteractionswiththezeoliteframework.During1-hexenearomatization,thenanosizedGaisomorphouslysubstitutedZSM-5zeolitesamples（Gax-NZ5）exhibitedbettercatalyticperformancecomparedtotheimpregnatedsamples,andthehighestaromaticyield（i.e.,65.4wt%）wasachievedovertheGa4.2-NZ5sample,whichcontainedwiththehighestGacontent.

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