Download or read book Field Emission Electronics written by Nikolay Egorov and published by Springer. This book was released on 2017-06-01 with total page 568 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is dedicated to field emission electronics, a promising field at the interface between “classic” vacuum electronics and nanotechnology. In addition to theoretical models, it includes detailed descriptions of experimental and research techniques and production technologies for different types of field emitters based on various construction principles. It particularly focuses on research into and production of field cathodes and electron guns using recently developed nanomaterials and carbon nanotubes. Further, it discusses the applications of field emission cathodes in new technologies such as light sources, flat screens, microwave and X-ray devices.

Download or read book Field Emission in Vacuum Microelectronics written by George N. Fursey and published by Springer Science & Business Media. This book was released on 2007-12-24 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt: Field emission is a phenomenon described by quantum mechanics. Its emission capability is millions times higher than that of any other known types of electron emission. Nowadays this phenomenon is experiencing a new life due to wonderful applications in the atomic resolution microscopy, in electronic holography, and in the vacuum micro- and nanoelectronics in general. The main field emission properties, and some most remarkable experimental facts and applications, are described in this book.

Download or read book The Formation and Characteristics of a Broad area Semiconductor Field Emission Cathode written by John W. Hanson and published by . This book was released on 1969 with total page 350 pages. Available in PDF, EPUB and Kindle. Book excerpt: The work is a study of the formation, operation and application of a semiconductor field emission cathode consisting of one or more individual emitting points on a broad area cathode. The material primarily used was germanium. Two methods of forming these cathodes were studied; a vacuum breakdown method and one using radiation from a pulsed ruby laser focused on the cathode surface. The former is the method by which the cathode was first revealed. The latter holds the most promise for making cathodes practical. Both types of cathodes were observed with a scanning electron microscope to aid in understanding the mechanism by which the very regular emitting points are formed. The electrical characteristics of the cathode were studied experimentally and found to agree with theory of semiconductor field emission. A retarding potential analyzer was designed and built to measure the energy distribution for electrons emitted from individual points on the cathode. An electron optical system was used to study the operation of the semiconductor cathode as an electron source for such applications as in a cathode ray tube or similar device requiring a low-current electron beam. (Author).

Download or read book Nanodiamond written by Oliver A Williams and published by Royal Society of Chemistry. This book was released on 2014-03-18 with total page 530 pages. Available in PDF, EPUB and Kindle. Book excerpt: The exceptional mechanical, optical, surface and biocompatibility properties of nanodiamond have gained it much interest. Exhibiting the outstanding bulk properties of diamond at the nanoscale in the form of a film or small particle makes it an inexpensive alternative for many applications. Nanodiamond is the first comprehensive book on the subject. The book reviews the state of the art of nanodiamond films and particles covering the fundamentals of growth, purification and spectroscopy and some of its diverse applications such as MEMS, drug delivery and biomarkers and biosensing. Specific chapters include the theory of nanodiamond, diamond nucleation, low temperature growth, diamond nanowires, electrochemistry of nanodiamond, nanodiamond flexible implants, and cell labelling with nanodiamond particles. Edited by a leading expert in nanodiamonds, this is the perfect resource for those new to, and active in, nanodiamond research and those interested in its applications.

Download or read book Applied Research on Field Emission Cathodes written by E. E. Martin and published by . This book was released on 1963 with total page 25 pages. Available in PDF, EPUB and Kindle. Book excerpt: Effort was directed toward the study of field emission cathodes and their development to a practical electron source. Primary emphasis was on relatively gross structures for use at high power levels. Emission currents to 22 amperes at 390 kilovolts were obtained from single, needle-shaped, tungsten emitters and to 105 amperes at 203 kilovolts from an edge-shaped, tungsten structure. Point cathodes were shown to emit maximum currents in agreement with theoretical prediction based on energy exchange at the cathode and on cathode dimensions. Electrolytic and chemical techniques were developed for fabrication of edge cathodes which were free of cold work and had terminal radii of the order of 0.00001 cm. Electron optical systems appropriate for use with field emitted beams were studied; and basic knowledge of the behavior of adsorbates which improve beam utility by selective emission enhancement in the forward direction was extended. (Author).

Download or read book Handbook of Visual Display Technology written by Janglin Chen and published by Springer. This book was released on 2012-01-23 with total page 2700 pages. Available in PDF, EPUB and Kindle. Book excerpt: This handbook offers a comprehensive description of the science, technology, economic and human interface factors associated with the displays industry. With expert contributions from over 150 international display professionals and academic researchers, it covers all classes of display device and discusses established principles, emergent technologies, and particular areas of application.

Download or read book Introduction to the Physics of Electron Emission written by Kevin L. Jensen and published by John Wiley & Sons. This book was released on 2017-11-29 with total page 714 pages. Available in PDF, EPUB and Kindle. Book excerpt: A practical, in-depth description of the physics behind electron emission physics and its usage in science and technology Electron emission is both a fundamental phenomenon and an enabling component that lies at the very heart of modern science and technology. Written by a recognized authority in the field, with expertise in both electron emission physics and electron beam physics, An Introduction to Electron Emission provides an in-depth look at the physics behind thermal, field, photo, and secondary electron emission mechanisms, how that physics affects the beams that result through space charge and emittance growth, and explores the physics behind their utilization in an array of applications. The book addresses mathematical and numerical methods underlying electron emission, describing where the equations originated, how they are related, and how they may be correctly used to model actual sources for devices using electron beams. Writing for the beam physics and solid state communities, the author explores applications of electron emission methodology to solid state, statistical, and quantum mechanical ideas and concepts related to simulations of electron beams to condensed matter, solid state and fabrication communities. Provides an extensive description of the physics behind four electron emission mechanisms—field, photo, and secondary, and how that physics relates to factors such as space charge and emittance that affect electron beams. Introduces readers to mathematical and numerical methods, their origins, and how they may be correctly used to model actual sources for devices using electron beams Demonstrates applications of electron methodology as well as quantum mechanical concepts related to simulations of electron beams to solid state design and manufacture Designed to function as both a graduate-level text and a reference for research professionals Introduction to the Physics of Electron Emission is a valuable learning tool for postgraduates studying quantum mechanics, statistical mechanics, solid state physics, electron transport, and beam physics. It is also an indispensable resource for academic researchers and professionals who use electron sources, model electron emission, develop cathode technologies, or utilize electron beams.

Download or read book A Novel Emission Electron Microscope for the Study of Field Emission Cathodes and Their Emittance written by Daniel Enderich and published by . This book was released on 2018 with total page 149 pages. Available in PDF, EPUB and Kindle. Book excerpt: Vacuum electronic devices (VEDs) serve an important role as high-power and/or high-frequency sources of RF radiation. To access higher power and higher frequency regimes, VEDs will require greater current densities and lower emittance electron beams. Field emission cathodes show tremendous promise in satisfying these needs, but much remains to be learned about how the cathode structure affects the emittance of the resulting beam. Some theoretical work has been published, but no experimental data has been produced to guide and validate these theoretical developments. In this dissertation, I motivate the need for a better understanding of these cathodes for application in VEDs. I show why emittance is such an important figure of merit for electron beams and how it relates to the beam current density. I demonstrate that the only way to acquire the data necessary to test the recent theoretical developments regarding emittance is to construct a focusing field emission electron microscope (f-FEEM) capable of resolving individual emission sites with large magnification. I provide design guidelines for constructing such an f-FEEM, and I present initial test data validating its performance. Finally, I propose future research directions that will improve the performance of the f-FEEM and open up new areas of research.

Download or read book Modern Developments in Vacuum Electron Sources written by Georg Gaertner and published by Springer Nature. This book was released on 2020-10-09 with total page 609 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Download or read book Nanostructured Carbon Electron Emitters and Their Applications written by Yahachi Saito and published by CRC Press. This book was released on 2022-01-27 with total page 374 pages. Available in PDF, EPUB and Kindle. Book excerpt: Carbon forms a variety of allotropes due to the diverse hybridization of s- and p-electron orbitals, including the time-honored graphite and diamond as well as new forms such as C60 fullerene, nanotubes, graphene, and carbyne. The new family of carbon isotopes—fullerene, nanotubes, graphene, and carbyne—is called “nanostructured carbon” or “nanocarbon.” These isotopes exhibit extreme properties such as ultrahigh mechanical strength, ultrahigh charge–carrier mobility, and high thermal conductivity, attracting considerable attention for their electronic and mechanical applications as well as for exploring new physics and chemistry in the field of basic materials science. Electron sources are important in a wide range of areas, from basic physics and scientific instruments to medical and industrial applications. Carbon nanotubes (CNTs) and graphene behave as excellent electron-field emitters owing to their exceptional properties and offer several benefits compared to traditional cathodes. Field emission (FE) produces very intense electron currents from a small surface area with a narrow energy spread, providing a highly coherent electron beam—a combination that not only provides us with the brightest electron sources but also explores a new field of electron beam–related research. This book presents the enthusiastic research and development of CNT-based FE devices and focuses on the fundamental aspects of FE from nanocarbon materials, including CNTs and graphene, and the latest research findings related to it. It discusses applications of FE to X-ray and UV generation and reviews electron sources in vacuum electronic devices and space thrusters. Finally, it reports on the new forms of carbon produced via FE from CNT.

Download or read book Tables on Non relativistic Electron Trajectories for Field Emission Cathodes written by Allan Melvin Russell and published by . This book was released on 1962 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Handbook of Charged Particle Optics written by Jon Orloff and published by CRC Press. This book was released on 2017-12-19 with total page 888 pages. Available in PDF, EPUB and Kindle. Book excerpt: With the growing proliferation of nanotechnologies, powerful imaging technologies are being developed to operate at the sub-nanometer scale. The newest edition of a bestseller, the Handbook of Charged Particle Optics, Second Edition provides essential background information for the design and operation of high resolution focused probe instruments. The book’s unique approach covers both the theoretical and practical knowledge of high resolution probe forming instruments. The second edition features new chapters on aberration correction and applications of gas phase field ionization sources. With the inclusion of additional references to past and present work in the field, this second edition offers perfectly calibrated coverage of the field’s cutting-edge technologies with added insight into how they work. Written by the leading research scientists, the second edition of the Handbook of Charged Particle Optics is a complete guide to understanding, designing, and using high resolution probe instrumentation.

Download or read book Carbon Nanotubes written by Mohammed Rahman and published by BoD – Books on Demand. This book was released on 2018-04-26 with total page 366 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book Carbon Nanotubes - Recent Progress contains a number of recent researches on synthesis, growth, characterization, development, and potential applications on carbon materials especially CNTs in nanoscale. It is a promising novel research from top to bottom that has received a lot of interest in the last few decades. It covers the advanced topics on the physical, chemical, and potential applications of CNTs. Here, the interesting reports on cutting-edge science and technology related to synthesis, morphology, control, hybridization, and prospective applications of CNTs are concluded. This potentially unique work offers various approaches on the R

Download or read book Non contact Charge Control Using Field Emission Cathodes written by Dion Monstavicius and published by . This book was released on 1998 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Physics of Carbon Nanotube Devices written by Francois Leonard and published by William Andrew. This book was released on 2008-11-18 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt: Possibly the most impactful material in the nanotechnology arena, carbon nanotubes have spurred a tremendous amount of scientific research and development. Their superior mechanical and chemical robustness makes them easily manipulable and allows for the assembly of various types of devices, including electronic, electromechanical, opto-electronic and sensing devices. In the field of nanotube devices, however, concepts that describe the properties of conventional devices do not apply. Carbon nanotube devices behave much differently from those using traditional materials, and offer entirely new functionality. This book – designed for researchers, engineers and graduate students alike – bridges the experimental and theoretical aspects of carbon nanotube devices. It emphasizes and explains the underlying physics that govern their working principles, including applications in electronics, nanoelectromechanical systems, field emission, optoelectronics and sensing. Other topics include: electrical contacts, p-n junctions, transistors, ballistic transport, field emission, oscillators, rotational actuators, electron-phonon scattering, photoconductivity, and light emission. Many of the aspects discussed here differ significantly from those learned in books or traditional materials, and are essential for the future development of carbon nanotube technology. • Bridges experimental and theoretical aspects of carbon nanotube devices, focusing on the underlying physics that govern their working principles • Explains applications in electronics, nanoelectromechanical systems, field emission, optoelectronics and sensing. • Other topics include: electrical contacts, p-n junctions, transistors, ballistic transport, field emission, oscillators, rotational actuators, electron-phonon scattering, photoconductivity, and light emission. • Covers aspects that significantly differ from those learned in traditional materials, yet are essential for future advancement of carbon nanotube technology. * Bridges experimental and theoretical aspects of carbon nanotube devices, focusing on the underlying physics that govern their working principles * Explains applications in electronics, nanoelectromechanical systems, field emission, optoelectronics and sensing. * Other topics include: electrical contacts, p-n junctions, transistors, ballistic transport, field emission, oscillators, rotational actuators, electron-phonon scattering, photoconductivity, and light emission * Covers aspects that significantly differ from those learned in traditional materials, yet are essential for future advancement of carbon nanotube technology.

Download or read book Interim Technical Report on High Density Field Emission Beams and Field Emission from Semiconductors written by and published by . This book was released on 1960 with total page 66 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Research on Field Emission Cathodes written by E.E. Marin and published by . This book was released on 1959 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt: