Physics of Absorption and Generation of Electromagnetic Radiation

The book offers a comprehensive and interdisciplinary exploration of the fundamental principles, mechanisms, and applications governing electromagnetic radiation across a wide spectrum of frequencies. It systematically bridges classical electromagnetic theory with modern advancements in metamaterials, simulation techniques, biomedical applications, and electromagnetic safety. Beginning with foundational concepts of transmission lines, interference phenomena, and design rules, the book gradually advances toward sophisticated topics such as broadband metamaterial absorbers, finite difference time domain (FDTD) methods, finite integration techniques, and COMSOL-based evaluations. A significant strength of the work lies in its detailed discussion of absorber design, fabrication strategies, and non-lithographic approaches, making it valuable for both researchers and practicing engineers. Beyond engineering and materials science, the book extends its scope to biological and medical domains, addressing the interaction of electromagnetic fields with living organisms, thermal and non-thermal effects, cancer treatment technologies, imaging systems, and machine-learning-assisted diagnostic tools. Topics such as microwave energy harvesting, electromagnetic pulses, biomedical detection, and food safety further highlight its applied relevance. Designed for postgraduate students, researchers, and professionals in physics, electronics, materials science, and biomedical engineering, this volume serves as both a reference text and a forward-looking guide to emerging electromagnetic technologies.