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CHAPTER Plasmonics CHAPTER OUTLINE HEAD 6 6.1 Introduction ....................................................................................................................................175 6.2 SPR Phenomena..............................................................................................................................177 6.2.1 Propagating Surface Plasmons ................................................................................... 177 6.2.1.1 SurfacePlasmonsattheInterfaceofSemi-InfiniteMetalDielectric.........................177 6.2.1.2 EffectsoftheFiniteMetalFilmThickness ...............................................................181 . 6.2.1.3 The2×2AbelesMatrixApproachfortheOpticsofMultilayers ..............................186 . 6.2.1.4 TheFieldDistributionCalculation............................................................................188 6.2.2 Localized SPR .......................................................................................................... 190 6.2.2.1 AbsorptionandScatteringbyMetalNanospheres ...................................................190 . 6.2.2.2 AbsorptionandScatteringbyAnisotropicNanoparticles..........................................193 6.2.2.3 FieldEnhancementandSurface-EnhancedOpticalEffects......................................196 6.2.2.4 EnhancedOpticalTransmissionThroughNanoaperturesinMetals..........................200 6.3 Applications of Plasmonics..............................................................................................................205