MicroComputed Tomography has become the gold standard for studying 3D microscopic structures nondestructively, and this book provides up-to-date coverage of the modality. The first part of the book focuses on methodology, covering experimental methods, data analysis, and visualization approaches. Emphasis is on fundamentals so that those new to the field can design their own effective microCT studies. The second part addresses various microCT applications, organized by type of microstructure so that the reader can appreciate approaches from other disciplines. The applications include porous solids, microstructural evolution, soft tissue studies, applications using x-ray phase contrast or x-ray scattering contrast, and multimode studies.
This book on gallium nitride (GaN) and associated materials focuses on advances in basic science, as well as the rapidly maturing technologies involving blue/green light emitters, detectors and high-power electronics. A highlight is a report on wide-bandgap semiconductor research done in Europe. Also reported is the commercialization of a laser operating at 405nm wavelength with a 4000-hour device lifetime. At 450nm emission wavelength, significant reductions in lifetime were found, and are believed to arise from nonideal properties of the InGaN alloy used in the active layer of the device. Additional topics include: the significant success of transistors for microwave applications; improvements in the epitaxy of GaN, using both selective area growth techniques (lateral epitaxy overgrowth) and introducing low-temperature intralayers in the films; advances in both molecular beam epitaxy and metal-organic vapor phase epitaxy, including several studies of quantum dot formation in strained alloys and improvements in hydride vapor phase epitaxy, particularly for providing very thick films.
These 38 papers from the April 2000 symposium study granular structure, granular flows, nonlinear waves in granular media, vibrated and rotated granular media, and stress distributions. Topics include jamming in liquids and granular materials, nuclear magnetic resonance studies of granular flows, the blueprint of a concept for a nozzle- free inkjet printer, mixing and segregation processes in a Turbula blender, persistence of granular structure during die compaction of ceramic powders, and humidity-induced cohesion effects in granular media. c. Book News Inc.