Introduction to Plasmonics and Nanophotonics

Nanotechnology has revolutionized how we manipulate light, allowing us to squeeze optical fields far below the conventional diffraction limit. To unlock these capabilities, you must understand how light behaves when confined to metallic structures at the nanoscale. This text-based course guides you through the fundamental physics of plasmonics, bridging the gap between classical electromagnetism, quantum mechanics, and solid-state materials. By reading through our structured lessons, you will transition from basic electromagnetic theory to understanding complex light-matter interactions at the nanoscale. You will discover how localized surface plasmons concentrate light, creating powerful optical fields that can detect single molecules and power next-generation nanoscale devices. What you'll learn: - Understand the core physical principles of light interaction with metal nanostructures - Explore the fundamentals of localized surface plasmon resonance and propagation - Analyze how quantum mechanics and solid-state physics govern optical responses at the nanoscale - Evaluate the mechanisms behind giant electromagnetic field enhancement - Discover the design principles of nanoscale lasers and single-molecule biosensors - Study modern computational modeling approaches used to simulate nanophotonic devices This course begins with foundational concepts, establishing key definitions, optical properties of metals, and Maxwell's equations in nanostructured media. As you progress, you will read about advanced applications in biosensing, subwavelength waveguiding, and active nanophotonic components. This course is designed for curious beginners, physics students, and engineers who want a solid theoretical foundation in nanophotonics without needing prior specialized laboratory experience. Start reading today to master the physics of subwavelength light control.