Wyniki wyszukiwania:

This book covers the basics of band structure of silicon and germanium and their influence on photonic properties and discusses system layout and key device components with the application background in mind. Special focus is given to SOI-based interconnects and passive waveguide devices and to germanium-on-silicon heterostructure devices for light detection, modulation, and emission. The high index contrast of SOI shows great promise for submicron waveguide structures suited to integration on chip scale. The Ge/Si heterostructures have already proved the expansion of the spectral range,...

This book presents the melt pool monitored-laser additive manufacturing (MPMed-LAM) technology for enhancing forming quality and mechanical performance of key metalic components. Despite progress in metal additive manufacturing (AM) since the 1970s, a large number of challenges remain in synergic controlling both shape and performance due to thermal stress-induced defects and metallurgical flaws. The book reviews key research on melt pool monitoring, forming quality control, microstructure evolution, and mechanical performance in laser additive manufacturing (LAM), providing a foundation...

This book introduces the laser hybrid additive manufacturing technology (LHAM) with alternately thermal and mechanical effects for the high-performance manufacturing of key components. Metal additive manufacturing (AM) technologies have made considerable progress in the basic theoretical field since its invention in the 1970s. However, there are still some difficulties in the coordinated control of the structure and performance, containing the challenges of "structure control" against deformation and cracking of the formed metallic components incurred by internal stress and "performance...

This book introduces the fundamentals of laser shock peening (LSP) and its effects on the corrosion behaviours of metal alloy materials. It focuses on innovations in theory and methods related to LSP-induced surface nanocrystallization and corrosion resistance in steels, Mg alloy and titanium alloy. The main contents of the book include the characteristics of laser shock wave, LSP-induced surface integrity and the anti-corrosion mechanism. The research has accumulated a large amount of experimental data, which has proven the significant effectiveness of LSP in improving the corrosion...