Chapter 1: Plasmonic Nanosensors: An Introduction. Chapter 2: Plasmonic Nanosensors: Classification, Properties, Applications, and Future Perspectives. Chapter 3: Biogenic Silver and Gold Nanostructures as Surface Plasmon Resonance Based Sensors for The Detection of Toxic Metal Ions in Aqueous Media. Chapter 4: Chemically Functionalized Silver and Gold Nanostructures as Surface Plasmon Resonance Based Sensors for The Detection of Toxic Metal Ions in Aqueous Media. Chapter 5: Paper-Based Plasmonic Nanosensors. Chapter 6: Graphene-Based Nanostructures as Plasmonic Nanosensors. Chapter 7: Core-Shell Nanostructures as Plasmonic Nanosensors. Chapter 8: Quantum Dots as Plasmonic Nanosensors. Chapter 9: Nanoporous Membrane Based Plasmonic Nanosensors. Chapter 10: Carbon Nanotubes Based Plasmonic Nanosensors. Chapter 11: Nanofiber Based Nanostructures as Plasmonic Nanosensors. Index.