This book examines the convergence of classical and quantum engineering at the nanoscale, where physical models begin to evolve under quantum effects. It presents a comprehensive perspective on how quantum phenomena can be understood, modeled, and applied within engineered systems, offering both theoretical and practical insights into this transitional regime.

Spanning topics from nanomaterials, interfaces, and quantum devices to fabrication methods, nano-optics, and biointerfaces, the chapters integrate foundational physics with design methodologies and experimental techniques that define modern nanoengineering. Contributions from across physics, materials science, and electrical engineering provide a unified view of how quantum and classical behaviors interact and overlap across scales. As quantum technologies advance and nanotechnologies mature, this book serves as a key reference for researchers and graduate students exploring the emerging continuum between the quantum and classical domains and the evolving principles that shape the next generation of engineering.