简介:Basedontheprinciplethatone-endedelectromagneticsurfacewavecandriveaplasmaantenna,therelationbetweentheeffectivelengthofanantennacolumnandtheappliedradiofrequency(RF)powerwasstudiedboththeoreticallyandexperimentally.Thedensitydistributionalongthcantennacolumnaswellastheelectrontemperatureindifferentconditionswereinvestigated.Thecharacteristicsofthereceptionoflocalfrequencymodulated(FM)electromagneticwavebytheplasmaantennawerecomparedwiththatbyacopperantennawithsamedimensions.Theresultsshowthatitisfeasibletotakeplasmaantennasasreceivingones.更多还原
简介:Anovelatmosphericplasmadevicedevelopedinthispaper,whichismoreeffectiveandconvenienttostudytheplasma-initiatedpolymerization(PIP)thanconventionalsetup.Thestructureandmechanismofthedeviceisintroduced.Someplasma-initiatedpolymerizationexperimentsarecarriedoutonthedevice,andtheconversionofAA(Acrylicacid)andAM(Acrylamide)atmospheric(N2)plasmapolymerizationarerespectively89%and94%after120hpostpolymerization,wherebyIRspectraoftheproduct(AA,AM).OurPIPresultareconfirmed.
简介:Wedevelopedaone-dimensionalhybridmodeltosimulatetheDC/RFcombineddrivencapacitivelycoupledplasmaforargondischarges.ThenumericalresultsareusedtoanalyzetheinfluenceoftheDCsourceontheplasmadensitydistribution,ionenergydistributions(IEDs)andionangledistributions(IADs)onboththeRFandDCelectrodes.TheincreaseinDCvoltagedrivesmorehigh-energyionstotheelectrodeappliedtotheDCsource,whichmakestheIEDsattheDCelectrodeshifttowardshigherenergy,andthepeaksintheIADsshifttowardssmallangleregions.Atthesametime,italsodecreasestheionenergyattheRFelectrodeandenlargestheincidentanglesoftheions,whichstriketheRFelectrode.
简介:Ananalyticalstudyispresentedonthemodaldispersioncharacteristics,groupvelocity,andeffectivegroup,aswellasthephaseindexofaternaryonedimensionalplasmaphotoniccrystalforanobliquelyincidentelectromagneticwaveconsideringtheeffectofcollisionsinplasmalayers.Thedispersionrelationisderivedbyusingthetransfermatrixmethodandtheboundaryconditionsbasedonelectromagnetictheory.Thedispersioncurvesareplottedforboththenormalphotonicbandgapstructureandtheabsorptionphotonicbandgapstructure.Itisfoundthattheincreaseintheangleofincidenceshiftsthephotonicbandgaptowardhigherfrequencies.Also,thecutofffrequencyisindependentofcollisions.