电雾化液滴运行轨迹仿真与沉积实验分析

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1、电雾化液滴运行轨迹仿真及沉积实验研究SimulationofElectrohydrodynamicAtomizatedDropletTrajectoryandExperimentResearchofDepositionAbstractElectrohydrodynamicatomization(EHDA)，oneofimportantbranchesofelectricfluid，mainlyuseselectricfluidforcetoovercometheliquidsurfacetensionand1ca

2、dtothefluidbrokeintotinydropletsformingatomizationphenomenon．耶1eadvantageofEHDAisthatitsdropletsCallbeextremelysmall，andthechargeandsizeofthedropletcanbecontrolledbyelectricalmeans．Besides，thethicknessofsinglelayerdepositedfilmisquitethin,whichhasbeenwidelyco

3、ncerned．HowtocontroltheprocessofEHDA，inordertoobtainidealsedimentarystructure，hasbeenthefocusofaaention．Inthisarticle，anumericalmodelforthesimulationofelectrohydrodynamicatomizateddroplettrajectoryhadbeenbuilttoresearchdepositionexperiment．Basingontheexisting

4、theoryandexperimentaldataofelectrohydrodynamicatomization，anumericalsimulationmodelofchargeddroplettrajectoriesWaSbuiltusingtheComsolsoftware．meffectofdifferentatomizationparameters(flowrate，workingdistance，appliedvoltage)onPt／CandPt-Ru／Cnano-suspensionatomiz

5、ationexperimentsandthemovementofthechargeddropletswerediscussed，respectively．AfocusingelectrodeWasaddedtOthetraditionalEHDAexperimentdevicetocontrolthetrajectoriesofchargeddroplets，whichmakethedepositionareaofatomizationdropletssmallerthanthatwithoutfocusinge

6、lectrode．TheeffectonEHDAofDifferenttypesoffocusingelectrodeshavebeenanalyzedrespectively．Byadjustingtheflowrate，thegraphenelinesofdozensofmicrometershavebeengot．Finally，Graphenenano-suspensionwaswereusedtostudyelectrohydrodynamicatomization(EHDA)whichusedPoly

7、dimethylsiloxane(PDMSlassubstrate．ThePDMShadbeentreatedbyoxygenplasmatoobtainthecone-jetmode．ComparisonofdifferentstructuredepositedbyEHDAonthemodifiedandunmodifiedPDMShasbeenmade．GraphenefilmswereformedontheoxygenplasmatreatedPDMSatdifferentworkingdistances．

8、RamanspectrumanalysisWasmadeatthelaserof785nmwavelength．TheleastsheetresistanceamonggraphenefilmsdepositedbyEHDAis127t1’sq～．Then，somegrapheneline(30prn-170肛m)weredepositionattheassistance