简介：Surfacemodificationonapolytetrafluoroethylene(PTFE)panelwasperformedwithsequentialnitrogenplasmatreatmentsandsurface-initiatedpolymerization.ByintroducingCOO—groupstothesurfaceofthePTFEpanelthroughgraftingpolymerizationofacrylicacid(AA),atransparentpoly(acrylicacid)(PAA)membranewasachievedfromacrylicacidsolution.GraftingpolymerizationinitiatingfromtheactivegroupswasachievedonthePTFEpanelsurfaceafterthenitrogenplasmatreatment.Utilizingtheacrylicacidasmonomers,withCOO—groupsascrosslinksitestoformreticulationstructure,atransparentpoly(acrylicacid)membranewitharborescentmacromolecularstructurewasformedonthePTFEpanelsurface.Analysismethods,suchasfouriertransforminfraredspectroscopy(FTIR),microscopyandX-rayphotoelectronspectroscopy(XPS),wereutilizedtocharacterizethestructuresofthemacromoleculemembraneonthePTFEpanelsurface.AcontactanglemeasurementwasperformedtocharacterizethemodifiedPTFEpanels.ThesurfacehydrophilicitiesofmodifiedPTFEpanelsweresignificantlyenhancedaftertheplasmatreatment.Itwasshownthatthegraftingrateisrelatedtothetreatingtimeandthepowerofplasma.

简介：Highlyc-axis-orientedZnOfilmsweredepositedsuccessfullyonthenucleationsidesoffree-standingdiamond(FD)filmsbythedirectcurrent(DC)magnetronsputteringmethod.Theeffectofthesputteringparameters,suchaspower,gaspressureandsputteringplasmacompositionofAr-to-O_2,onthepropertiesofZnOthinfilmswasinvestigatedindetail.X-raydiffraction(XRD)measurementsshowedthat,atasputteringpowerof200W,gaspressureof0.5PaandanAr-to-O_2compositionof1:1,ahigherintensityofthe(002)diffractionpeakandanarrowerfullwidthathalfmaximum(FWHM)weredetectedwhichmeanthighc-axisorientationandhighqualityoftheZnOfilms.ToimprovethequalityoftheZnOfilm,athinZnOlayerwaspre-grownasahomo-bufferlayer.XRDmeasurementsshowedthatthisbufferlayerhadabeneficialeffectonthestructuralandmorphologicalpropertiesofthepost-grownZnOfilm.