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Nanostructured Carbon Electron Emitters and Their Applications
Nanostructured Carbon Electron Emitters and Their Applications
📖 Book - PDF

Nanostructured Carbon Electron Emitters and Their Applications

Yahachi Saito
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360 pages
language
English
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📖 Book - PDF

Nanostructured Carbon Electron Emitters and Their Applications

Yahachi Saito
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About This Book

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 C 60 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.

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Information

Publisher
Jenny Stanford Publishing
Year
2022
ISBN
9781000333879
Topic
Physical Sciences
Subtopic
Physics
Edition
1

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