金屬納米顆粒的形狀對表面等離子體共振特性的調(diào)制研究.pdf

1、電子科技大學碩士學位論文金屬納米顆粒的形狀對表面等離子體共振特性的調(diào)制研究姓名：張妹景申請學位級別：碩士專業(yè)：光學指導教師：周秀麗20100501ABSTRACTABSTRACTTheopticalpropertiesofmetallicnanoparticlesandtheirapplicationinsurfaceenhancedRamanscattering(SERS)havebeenahottopicinnanosciencea

2、ndnanotechnologyBecausenanoparticlesaredifferentfrombulkmaterialsintheconstruction，nanoparticlesbearsomeeffects，forexamplequantumsizeeffectsmallsizeeffectsurfaceeffectandSOonThesebasicpropertiesleadtospecialopticalproper

3、tiessurfaceplasmonresonanceThesurfaceplasmaresonancepeakpositionsisinfluencedbythesize，shape，metalcompositionandsurroundingmedium，thespecialpropertiesCanapplymmanyareasThemainfocusofthisthesisistosurpassthelimitationofMi

4、etheorywhoseapplicationisrigorouslylimitedtosphericalparticles，inordertotheoreticallystudythequantitativedependenceofthelinearopticalpropertiesandelectromagneticenhancementmechanismofSERSonthesize，shape，surroundingmedium

5、ofmetalnanoparticleswi廿1arbitraryshapeThemainworkofthispaperissummarizedasfollows1Basedonthesurfaceplasmonresonance(SPR)propertiesofmetalnanoparticles，thetransmissioncharacteristicsofametallicfilmwitllsubwavelengthellips

6、oidnanoholearraysareinvestigatedbyusingthethreedimensionalfinite—differencetimedomain(3DFDTD)methodTheinfluencesofthe1atticeconstantandtheholeshapeonthetransmissionarestudiedTheextraordinarytransmissionisattributedtothec

7、ollaborationoflocalizedwaveguideresonanceandSPR2Opticalpropertiesofmetalnanoparticlesareinfluencedbythemetalcomposition，shape，sizepolarizationdirectionoflightandeffectiveindexofthemediumaroundthenanoparticlesTheplasmonic

8、propertiesofrhombus，cross—shapedsilvernanoparticleandarraiesareinvestigatedusing3D—FDTDmethodThensummarythevariationofthesenanoparticlesandarraies3Moredetailedcalculationofelectricfields(Efields)distributionandthemaxtium