简介:Fe2O3solwiththeparticlediameterof3-5nmwasflocculatedbytheadditionofSDS,andtheflocculateformedwasredispersedbythefurtheradditionofthatsurfactant.ThusthesurfactantbilayerwasformedonthesurfaceofFe2O3.Theemulsionpolymerizationofstyrene(St)adsolubilizedonthesurfactantadsorbedbilayerwascarriedoutbyinitiatorpotassiumpersulfate(KPS).TheUV-Visandsurfacephotovoltagespectra(SPS)indicatethattheFe2O3particleswereencapsulatedinpolystyrene(PSt)successfully.
简介:Theobservationandestimationofdirectionalspectraofseawavesisoneoftheessentialsubjectsofstudyofoceanicdynamics.Onthebasisoftheirregularlinearwavetheory,estimationmethodsfori/UV,PUVandVVdirectionalwavespectraarederived.ByusingijandPUVdatameasuredin-situ,directionalwavespectraareestimated,meanwhilethevirtuesanddefectsofvariousspectraarecomparied.Thismethodprovideabasisfortheobservationsofseawaves.
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简介:Anovelfluorescencelifetimeimagingmicroscopy(FLIM)workingwithdeepUV240–280nmwavelengthexcitationshasbeendeveloped.UV-FLIMisusedformeasurementofdefect-relatedfluorescenceanditschangesuponannealingfromfemtosecondlaser-inducedmodificationsinfusedsilica.ThisFLIMtechniquecanbeusedwithmicrofluidicandbiosamplestocharacterizetemporalcharacteristicsoffluorescenceuponUVexcitation,acapabilityeasilyaddedtoastandardmicroscope-basedFLIM.UV-FLIMwastestedtoshowannealingofthedefectsinducedbysilicastructuringwithultrashortlaserpulses.Frequency-domainfluorescencemeasurementswereconvertedintothetimedomaintoextractlongfluorescencelifetimesfromdefectsinsilica.