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Interfaces of solid materials play an increasingly important role when the size of active elements used in different areas of science and technology shrinks to the nanometer range. This has required development of analytical tools specifically sensitive to the properties of a material in the vicinity of its boundary with other phase (a heterojunction). The present book is the first to describe the basics of internal photoemission spectroscopy - a method based on the detection of electron transitions from one solid to another. This spectroscopy combines the interface sensitivity typical of conv

Photoelectron spectroscopy. --- Photoemission. --- Semiconductors --- Junctions.

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Significant progress has occurred during the last few years in device technologies and these are surveyed in this new volume. Included are Si/(Si-Ge) heterojunctions for high-speed integrated circuits, Schottky-barrier arrays in Si and Si-Ge alloys for infrared imaging, III-V quantum-well detector structures operated in the heterodyne mode for high-data-rate communications, and III-V heterostructures and quantum-wells for infrared emissions.

Semiconductors --- Thin films, Multilayered. --- Epitaxy. --- Quantum wells. --- Infrared detectors. --- Junctions.

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This volume explores the dynamic topic of tight junctions. The book focuses on tight junctions' role in sealing adjacent epithelial cells in a narrow band just beneath their apical surface. The book explains how tight junctions consist of a network of claudins and other proteins, and delves into how they hold cells together and form functional and protective barriers, regulating the passage of molecules and ions through the space between cells. The book opens with a discussion of the evolution of research on tight junctions, discussing a range of primary areas of growth, including the current knowledge on the particular physiological function of different claudins due to the development of an array of knock out mice. The chapters also explore in-depth studies of tight junctions in specific tissues (gut, lung and endothelia). This book offers a comprehensive understanding on post-translational modifications of occludin and its impact on tight junction function, as well as the molecular composition and function of tricellular tight junctions. This volume is particularly relevant to students and scientists in neuroscience, cell biology, physiology, cell differentiation, and cancer research.

Histology. Cytology --- Biology --- History of human medicine --- Pathological biochemistry --- Neuropathology --- Human medicine --- medische biochemie --- neurologie --- farmacologie --- biologie --- biomedische wetenschappen --- cytologie --- histologie --- Tight junctions (Cell biology) --- Life sciences. --- Citologia