1、applicationofsumfrequencygenerationvibrationalspectroscopyincharacteringpolymersurface聚合物的表面和界面的特征和頻率振動光譜，reporter:tanjiaoj 、主要和人員of SFG、簡單規(guī)格體系(5主單元)、外觀、單層無大片。 創(chuàng)新行業(yè)，環(huán)境響應，混合行業(yè)，多邊形角色，高級，SFG，行業(yè)。 2 .清潔表面(樣本(b ) fmma=0. 06。 (C)fMMA=0.09 (D)fMMA=0.11 .3 .結構安全保護/PMMA混合， figurewatercontact-angleofblendsbefo

2、re figuresfgofblends.sampleswereannealedinavacuumat 150 for 20 h，伊柳， Marie c.messer.j.phys.chem.b.3 .結構安裝策略/PMMA品牌，4 .環(huán)境響應， sfghavebeenusedsuccessfullytoprobeburiedinterfacinvariousfieldsofresearch.buttherearemanyprolemstobesolved :1.irirved ctrol pectroscopymolecularchirality3. developmentofhigh-po

3、wertuneablelasersources、Thank you -TJJ、原理、 IR -可視sumfrequencygenerationspectroscopyusestwolaserbeamsthatoverlapatasurfaceofamaterialortheinterfacebetweentwomaterri atafrequencyofthesumofthetwoinputbeams.thetwoinputbeamshavetobeabletoaccessthesurface。 andtheoutputbeamneedstobeabletoleavethesurfacetob

4、epickedupbyadetector.2 oneofthebeamsisavisiblewavelengthlaserheldatacons驗證書thesystemcanscanoverresonancesandobtainthevibrationalspectrumoftheinterfacialregion.1 asanonlinearopticalprocess。 thepolarizationwhichgeneratestheoutputdependsontheelectricfieldsofthetwoinputbeams.asasecond-ordernonlinearproc

5、ess。 sfgisdependentonthe2ndordersusceptibility (2).thefactthatthe2ndordersusceptibility，a third秩檢測器。 becomeszeroincentrosymmetricmedia，limitswhatsamplesareaccessibleforsfg.centrosymmetricmediaincludethebulkofgases， limitswhatsamplesareaccessibleforsfg.Centro andmostsolidsundertheassumptionoftheelect

6、ric -雙極應用程序。 whichneglectsthesignalgeneratedbymultipolesandmagneticmoments.2 ataninterfacebetweentwodifferentmaterialsortwocentrosymmetro the enandansfgsignalcanbegenerated.thissuggeststhattheresultingspectrarepresentathinlayerofmolecules ignalisfoundwhenthereisanetpo sumfrequencygenerationspectrosc

7、opy (SFG ) isatechniqueusedtoanalyzesurfacesandinterfaces.thisnonlinearlaserspectroscopymethodwasdevelopedin 1987 andrapidlyappliedtodeeed 定向分布、andsomestructuralinformationofmoleculesatgassolid、gasliquidandliquidsolidinterfaces.inatypicalsfgs twolaserbeamsmixatasurfaceandgenerateanoutputbeamwithafrequencyequaltothesumofthetwoinputfrequencies.sfghasadvantagesinits ABI ensitive、ab