Modern Developments in Vacuum Electron Sources

Modern Developments in Vacuum Electron Sources

Author: Georg Gaertner

Publisher: Springer Nature

Published: 2020-10-09

Total Pages: 609

ISBN-13: 3030472914

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This book gives an overview of modern cathodes and electron emitters for vacuum tubes and vacuum electron devices in general. It covers the latest developments in field emission theory as well as new methods towards improving thermionic and cold cathodes. It addresses thermionic cathodes, such as oxide cathodes, impregnated and scandate cathodes, as well as photocathodes and field emitters – the latter comprising carbon nanotubes, graphene and Spindt-type emitter arrays. Despite the rise and fall of the once dominant types of vacuum tubes, such as radio valves and cathode ray tubes, cathodes are continually being improved upon as new applications with increased demands arise, for example in electron beam lithography, high-power and high-frequency microwave tubes, terahertz imaging and electron sources for accelerators. Written by 17 experts in the field, the book presents the latest developments in cathodes needed for these applications, discussing the state of the art and addressing future trends.


Engineered in Japan

Engineered in Japan

Author: Jeffrey K. Liker

Publisher: Oxford University Press, USA

Published: 1995

Total Pages: 421

ISBN-13: 0195095553

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Engineered in Japan presents a unique and comprehensive examination of technology management in the most successful Japanese companies: unique in that all chapters go beyond superficial descriptions of stylized practices to look in depth at particular issues, often contradicting or qualifying the conventional wisdom; comprehensive in that it covers the entire technology life cycle from basic R&D, to development engineering, to manufacturing processes, to learning from the Japanese. Each chapter is based on original research by noted scholars in the field, and identifies technology management practices that have become a major source of competitive advantage for highly successful Japanese companies. Engineered in Japan documents the best practices from such companies as Toyota, Hitachi, Toshiba, and Nippondenso, and discusses how these technology management practices can be usefully adopted in other cultural contexts. Going beyond past observations, the authors all delve below the surface of Japanese management approaches. They look more closely than has been done before at how particular methods are applied, and they identify some new practices that have not yet been highlighted in books on Japanese methods. Presenting recent data that contradict some conventional thinking about U.S.-Japanese differences, they look at old techniques from a new perspective. "U.S. managers can perhaps learn more from the process of creation in Japan and the organizational structures that support innovation," say the editors in their introduction, "than from the particular approaches, tools, and technologies created." A running theme throughout the book is that Japanese managers and engineers tend to think in terms of systems, focusing not just on the parts but on the connections between them. Engineered in Japan is must reading for technology managers and engineers, along with anyone interested in Japanese business, engineering, and management.


Japanese Manufacturing Techniques

Japanese Manufacturing Techniques

Author: Richard Schonberger

Publisher: Simon and Schuster

Published: 1982

Total Pages: 280

ISBN-13: 0029291003

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Japanese productivity and quality standards have fired the imagination of American managers, but until now there has been little explanation of how to do it -- how to apply Japanese methods at the actual operating level of U.S. manufacturing plants. This book shows you how, exposing otherwise well-informed westernized readers to a new world of management ideas. Author Richard J. Schonberger demonstrates that the Japanese formula for success is based on a number of specific, interrelated techniques -- stunning in their simplicity -- and he shows how these techniques can be put to work in American industries today. Here, in a clear, handbook format, are nine "lessons" for American manufacturers, introducing scores of techniques aimed at simplifying the overly-complex purchasing, inventory, assembly-fine, and quality-control processes of U.S. firms. At the heart of Japanese manufacturing success are two overlapping strategies: "just-in-time" production and "total quality control." Some American manufacturers already know a little about these methods, but Richard Schonberger provides the most comprehensive description of these techniques available: how they developed, how they all fit together, why they are so potent, and how they "snowball" -- unleashing a powerful chain reaction of productivity and quality control improvements each time more simplification is introduced. -- Publisher description.


The Blue Laser Diode

The Blue Laser Diode

Author: Shuji Nakamura

Publisher: Springer Science & Business Media

Published: 2013-04-17

Total Pages: 348

ISBN-13: 366203462X

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In 1993, the author, Shuji Nakamura developed the first commercially available blue and green light-emitting diodes. Now he has made the most important breakthrough in solid state laser techniques to date - the first blue semiconductor laser based on GaN. Here, Dr. Nakamura discusses the physical concept and basic manufacturing technology of these new blue light-emitting and laser diodes. he shows how this represents a new era in commercial applications for semiconductors, including displays, road and railway signalling, lighting, scanners, optical data storage, and much more. Moreover, Nakamura provides fascinating background information on the extraordinary realisation of an extremely successful concept of research and development. Of interest to researchers as well as engineers.


New Achievements in Continuum Mechanics and Thermodynamics

New Achievements in Continuum Mechanics and Thermodynamics

Author: Bilen Emek Abali

Publisher: Springer

Published: 2019-03-13

Total Pages: 586

ISBN-13: 3030133079

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This book presents a liber amicorum dedicated to Wolfgang H. Müller, and highlights recent advances in Prof. Müller’s major fields of research: continuum mechanics, generalized mechanics, thermodynamics, mechanochemistry, and geomechanics. Over 50 of Prof. Müller’s friends and colleagues contributed to this book, which commemorates his 60th birthday and was published in recognition of his outstanding contributions.


Internal Photoemission Spectroscopy

Internal Photoemission Spectroscopy

Author: Valeri V. Afanas'ev

Publisher: Elsevier

Published: 2014-02-22

Total Pages: 404

ISBN-13: 0080999301

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The second edition of Internal Photoemission Spectroscopy thoroughly updates this vital, practical guide to internal photoemission (IPE) phenomena and measurements. The book's discussion of fundamental physical and technical aspects of IPE spectroscopic applications is supplemented by an extended overview of recent experimental results in swiftly advancing research fields. These include the development of insulating materials for advanced SiMOS technology, metal gate materials, development of heterostructures based on high-mobility semiconductors, and more. Recent results concerning the band structure of important interfaces in novel materials are covered as well. Internal photoemission involves the physics of charge carrier photoemission from one solid to another, and different spectroscopic applications of this phenomenon to solid state heterojunctions. This technique complements conventional external photoemission spectroscopy by analyzing interfaces separated from the sample surface by a layer of a different solid or liquid. Internal photoemission provides the most straightforward, reliable information regarding the energy spectrum of electron states at interfaces. At the same time, the method enables the analysis of heterostructures relevant to modern micro- and nano-electronic devices as well as new materials involved in their design and fabrication. - First complete model description of the internal photoemission phenomena - Overview of the most reliable energy barrier determination procedures and trap characterization methods - Overview of the most recent results on band structure of high-permittivity insulating materials and their interfaces with semiconductors and metals


Excitonic Processes in Solids

Excitonic Processes in Solids

Author: Masayasu Ueta

Publisher: Springer Science & Business Media

Published: 2012-12-06

Total Pages: 544

ISBN-13: 3642826024

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An exciton is an electronic excitation wave consisting of an electron-hole pair which propagates in a nonmetallic solid. Since the pioneering research of Fren kel, Wannier and the Pohl group in the 1930s, a large number of experimental and theoretical studies have been made. Due to these investigations the exciton is now a well-established concept and the electronic structure has been clarified in great detail. The next subjects for investigation are, naturally, dynamical processes of excitons such as excitation, relaxation, annihilation and molecule formation and, in fact, many interesting phenomena have been disclosed by recent works. These excitonic processes have been recognized to be quite important in solid-state physics because they involve a number of basic interactions between excitons and other elementary excitations. It is the aim of this quasi monograph to describe these excitonic processes from both theoretical and experimental points of view. we take a few To discuss and illustrate the excitonic processes in solids, important and well-investigated insulating crystals as playgrounds for excitons on which they play in a manner characteristic of each material. The selection of the materials is made in such a way that they possess some unique properties of excitonic processes and are adequate to cover important interactions in which excitons are involved. In each material, excitonic processes are described in detail from the experimental side in order to show the whole story of excitons in a particular material.