Carbon Nanotubes Field Emission Diode: Nanoelectronic Device

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A fully integrated field emission diode (FED) using carbon nanotubes as electron field emitter was constructed. The device was designed and fabricated on a glass substrate by screen-printing thick film technique. The FED was operated at 100 V for giving a forward current density of 180 mA/cm2. A leakage current of 1 pA was measured then a 1000 V reverse voltage was applied, indicating that a high voltage blocking capability was obtained from such a device. From theoretical calculation and experimental results, the FED can be operated in megahertz due to very high speed of electrons traveling through them vacuum gap on forward operation and a small residue capacitance as well as minimum the reverse recovery time on reverse operation. The high performance of the novel FED was fabricated by a cost effective process combined with nanomaterials which opens up a route to produce miniaturized vacuum devices and new applications for such kind of the integrated vacuum microelectronic device.

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Carbon Nano Forms and Applications

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Cutting-edge coverage of carbon nanoscale science

This definitive volume offers an in-depth look at the unique properties and potential applications of carbon nanomaterials (CNM). Beginning with a description of various CNM types, Carbon Nanoforms and Applications addresses the need to develop a new classification of carbon. After discussing the fundamental physics, the book covers techniques for CNM synthesis and characterization. This authoritative resource then provides comprehensive information on the physico-chemical and biosystems applications of CNMs.

Carbon Nanoforms and Applications covers:

• Theoretical aspects of CNM
• Synthesis and characterization of CNM
• Electron field emission
• Fuel cells
• Electric double-layer capacitors
• Hydrogen storage
• Lithium-ion batteries
• Carbon solar cells
• Microwave absorption
• Carbon nanosensors
• Biosystems
• Cancer treatment
• Nano-enabled drug delivery
• Antimicrobial properties
• Tissue fabrication
• Neurogenesis
• Food and cosmetics

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NanoScience in Biomedicine

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NanoScience in Biomedicine provides up-to-date information in the frontier fields of nano biomedicine focusing on basic concepts and recent developments in many topical areas including particular nanomaterials synthesis, field emission of carbon nanotubes, flexible dye-sensitized nano-porous films, magnetic nanofluids, and intrinsically electroconducting nanoparticles. Novel methods of synthesizing nanoscale biomaterials and their applications in biomedicine are also included such as nano-sized materials for drug delivery, bioactive molecules for regenerative medicine, nanoscale mechanisms for assembly of biomaterials, and nanostructured materials constructed from polypeptides. This book is organized in three parts: Part I introduces most recent developments in all aspects of design, synthesis, properties, and applications of nanoscale biomaterials. Part II focuses on novel nanotechnologies in biomedicine. Part III includes some of the new developments of nanomaterials’ synthesis and recent studies on nanostructure-properties relationships. The book comprehensively addresses the most critical issues in a tutorial manner so that technical non-specialists and students in both biomedical sciences and engineering will be able to benefit. All chapters are contributed by internationally recognized scholars.

Dr. Donglu Shi is a professor at the Chemical and Materials Engineering Department, University of Cincinnati, USA.

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Ultrananocrystalline Diamond: Synthesis, Properties, and Applications

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Ultrananocrystalline Diamond: Syntheses, Properties, and Applications is a unique practical reference handbook that brings together the basic science of nanoscale carbon structures, particularly its diamond phase, with detailed information on nanodiamond synthesis, properties, and applications. Here you will learn about UNCD in its two forms, as a dispersed powder made by detonation techniques and as a chemical vapor deposited film. You will also learn about the superior mechanical, tribological, transport, electrochemical, and electron emission properties of UNCD for a wide range of applications including MEMS, NEMS, surface acoustic wave (SAW) devices, electrochemical sensors, coatings for field emission arrays, photonic and RF switching, biosensors, and neural prostheses, and more.

This ôEverything about Ultra-nanocrystalline Diamondö book with 16 chapters is written by leading experts worldwide. It is for everyone who researches carbon nanostructures, everyone who produces them, everyone who characterizes them, and everyone who builds devices using them.

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Carbon Nanotubes: Basic Concepts and Physical Properties

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Carbon nanotubes are exceptionally interesting from a fundamental research point of view. Many concepts of one-dimensional physics have been verified experimentally such as electron and phonon confinement or the one-dimensional singularities in the density of states; other 1D signatures are still under debate, such as Luttinger-liquid behavior. Carbon nanotubes are chemically stable, mechanically very strong, and conduct electricity. For this reason, they open up new perspectives for various applications, such as nano-transistors in circuits, field-emission displays, artificial muscles, or added reinforcements in alloys.

This text is an introduction to the physical concepts needed for investigating carbon nanotubes and other one-dimensional solid-state systems. Written for a wide scientific readership, each chapter consists of an instructive approach to the topic and sustainable ideas for solutions. The former is generally comprehensible for physicists and chemists, while the latter enable the reader to work towards the state of the art in that area. The book gives for the first time a combined theoretical and experimental description of topics like luminescence of carbon nanotubes, Raman scattering, or transport measurements. The theoretical concepts discussed range from the tight-binding approximation, which can be followed by pencil and paper, to first-principles simulations. We emphasize a comprehensive theoretical and experimental understanding of carbon nanotubes including

– general concepts for one-dimensional systems
– an introduction to the symmetry of nanotubes
– textbook models of nanotubes as narrow cylinders
– a combination of ab-initio calculations and experiments
– luminescence excitation spectroscopy linked to Raman spectroscopy
– an introduction to the 1D-transport properties of nanotubes
– effects of bundling on the electronic and vibrational properties and
– resonance Raman scattering in nanotubes.

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