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Contents
Preface
Acknowledgment
xiii
xvii
1 Foundations of Molecular Plasmonics 1
F. Della Sala
1.1 Electromagnetic Waves 2
1.1.1 Propagation in a Homogeneous Medium 5
1.1.1.1 Poynting vector 7
1.1.2 Reflection and Transmission at an Interface 9
1.1.2.1 Normal incidence 13
1.1.3 Current and Charges as Sources of Fields 14
1.1.3.1 Green’s function 15
1.2 Dielectric Function of Metals 17
1.2.1 The Drude Model 17
1.2.2 Noble Metals 22
1.2.3 Linear Response Theory 23
1.3 Delocalized Surface Plasmon Resonances 27
1.3.1 The Surface Plasmon-Polariton Wavevector 30
1.3.1.1 Propagation length 32
1.3.1.2 Field-penetration depths 33
1.4 Localized Surface Plasmon Resonances 33
1.4.1 Nanosphere in the Quasi-Static Approximation 35
1.5 Dipole Radiation 41
1.5.1 Radiation Pattern 45
1.5.2 Dissipated Power 46
1.5.3 Classical Approach 47
1.6 Scattering Theory 50
1.6.1 Scattering Cross-Section 52
1.6.2 Optical Theorem 54