Comprehensive summary of Chalcogenide Nanophotonics, reviewing basic principles, synthesis methods, and cutting-edge applications Chalcogenide Nanophotonics offers an in-depth exploration of these remarkable materials, covering their fundamental physics, synthesis methods, optical phenomena, and cutting-edge applications in modern photonics. A distinctive feature of this book is its interdisciplinary approach, weaving together materials science, condensed matter physics, and photonic engineering. Each chapter integrates theoretical frameworks with practical case studies — such as phase-change memory devices leveraging GeSbTe alloys or GST-based metasurfaces for dynamic color displays — to illustrate the symbiotic relationship between material design and device performance. The inclusion of recent breakthroughs, such as van der Waals epitaxy for low-defect heterostructures and UV lithography for scalable metasurfaces, ensures relevance to both academic and industrial audiences. Chalcogenide Nanophotonics includes information on: Electronic band structure and material properties, elucidating how chemical bonding and lattice dynamics govern their optoelectronic behaviorIntricate mechanisms of thin-film growth, offering insights into epitaxial techniques such as chemical vapor deposition and pulsed laser depositionProperties of chalcogenides, covering dielectric functions, Raman spectroscopy, and emission mechanismsChalcogenide-based photonic crystals and metamaterials, showcasing their potential for beam steering, perfect absorption, and chiral light manipulationFuture challenges and opportunities, from machine learning-driven material discovery to monolithic 3D integration for quantum photonics Chalcogenide Nanophotonics serves as both a roadmap and an invitation to researchers, engineers, and students alike, encouraging them to harness the infinite potential of chalcogenides.