简介:Basedontheexperimentalresultsofabnormalinfraredeffects(AIREs)formoleculesadsorbedontransition-metalnanostructuredsurfaces,theinteractionsandthepolarizabilityoftheadsorbedmoleculesareanalyzedtheoretically.Bynumericalsimulations,thenormalabsorptionspectrum,theFano-likebipolarspectrumandtheanti-absorptionspectrumoftheadsorbedCOmoleculesareobtainedrespectively.Theresultsshowthattheadsorbedmoleculesonametalnanostructuredsurfacecanaccumulatetogetherduestotheeffectoflocalexternalelectricfield,whichleadstoachangeinimaginarypartofthemolecularpolarizabilitywithinacertainrangeoffrequency,andevenanegativevaluemayappear.