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会计学Gate-VariableOpticalTransitionsinGrapheneFengWang,YuanboZhang,ChuanshanTian,CaglarGirit,AlexZettl,MichaelCrommie,andY.RonShen,Science320,206(2008).Graphene(AMonolayerofGraphite)Electrically:Highmobilityatroomtemperature,LargecurrentcarryingcapabilityMechanically:LargeYoung’smodulus.Thermally:Highthermalconductance.QuantumHalleffect,BarryPhaseBallistictransport,KleinparadoxOthersQuantumHallEffectOpticalStudiesofGrapheneCrystallineStructureofGraphiteGrapheneBandStructureofGrapheneMonolayerp-ElectronBandsofGrapheneMonolayerExfoliatedGrapheneMonolayersandBilayersRamanSpectroscopyofGrapheneReflectionSpectroscopyonGrapheneExperimentalArrangementInfraredReflectionSpectroscopytoDeduceAbsorptionSpectrumSpectroscopyonMonolayerGrapheneMonolayerSpectrumExperimentalArrangementGateEffectonMonolayerGrapheneVaryOpticalTransitionsbyGatingResultsinGrapheneMonolayerMappingBandStructurenearK2DPlotofMonolayerSpectrumBilayerGraphene(Gate-TunableBandgap)DoublyGatedBilayerSamplePreparationTransportMeasurementOpticalTransitionsinBilayerDifferentialBilayerSpectra(dD=0)(DifferencebetweenspectraofD0andD=0)/ChargeInjectionwithoutChangeofBandstructure(Dfixed)DifferenceSpectraforDifferentDbetweendD=0.15v/nmanddD=0LargerDBandgapversusDD(dR/R)(dR/R)60V-(dR/R)-50VSummary