Preparation of Chemical Vapor-deposited Materials for Use in Field-enhanced Electron Emission Studies PDF Download
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Author: David G. MCMaster Publisher: ISBN: Category : Languages : en Pages : 44
Book Description
The general principles of chemical vapor deposition (CVD) are described and specific experimental results on the deposition of pyrolytic graphite, of CVD boron nitride, and of CVD tungsten on tungsten substrates are discussed. In order to obtain uniform anisotropic, thin films of pyrolytic graphite and CVD boron nitride, the deposition parameters such as deposition temperature, concentration of the gaseous reactants, and gas flow pattern were varied, and their influence on the deposits was studied. It was found that the uniformity of pyrolytic graphite can be increased by using high total gas flow rates and low methane concentrations. The most uniform CVD-boron nitride deposits were obtained under the following conditions: Temperature: 1600C; Gas flow rate (cc/min): ammonia 10, boron trichloride 6, nitrogen 4. The deposits of pyrolytic graphite and CVD boron nitride exhibited a high degree of anisotropy. Thin-film sandwich structures of pyrolytic graphite and CVD boron nitride were successfully produced. Preliminary tests have been performed with CVD tungsten. (Author).
Author: David G. MCMaster Publisher: ISBN: Category : Languages : en Pages : 44
Book Description
The general principles of chemical vapor deposition (CVD) are described and specific experimental results on the deposition of pyrolytic graphite, of CVD boron nitride, and of CVD tungsten on tungsten substrates are discussed. In order to obtain uniform anisotropic, thin films of pyrolytic graphite and CVD boron nitride, the deposition parameters such as deposition temperature, concentration of the gaseous reactants, and gas flow pattern were varied, and their influence on the deposits was studied. It was found that the uniformity of pyrolytic graphite can be increased by using high total gas flow rates and low methane concentrations. The most uniform CVD-boron nitride deposits were obtained under the following conditions: Temperature: 1600C; Gas flow rate (cc/min): ammonia 10, boron trichloride 6, nitrogen 4. The deposits of pyrolytic graphite and CVD boron nitride exhibited a high degree of anisotropy. Thin-film sandwich structures of pyrolytic graphite and CVD boron nitride were successfully produced. Preliminary tests have been performed with CVD tungsten. (Author).
Author: S. R. Steele Publisher: ISBN: Category : Languages : en Pages : 54
Book Description
The objectives of this program include: (a) The investigation of some of the specific applications of currently available CVD materials in electron tubes, (b) The preparation of improved CVD materials which appear to be potentially valuable for future use in electron tubes. (Author).
Author: Selcuk Guceri Publisher: Springer Science & Business Media ISBN: 1402025483 Category : Technology & Engineering Languages : en Pages : 534
Book Description
The combination of conductive polymer technology with the ability to produce nanofibres will facilitate major new developments in biotechnology and information technology, benefiting such areas as scaffolds for tissue engineering and drug delivery systems; wires, capacitors, transistors and diodes; sensor technology; biohazard protection; and energy transport, conversion and storage. The work on nanofibrous materials presented here is designed, first of all, to instruct scientists in the most advanced methods for the formation of nanofibres and nanotubes. The second section covers the physics and chemistry of nanofibres, while the third deals with computer simulation and modelling. The applications described in section 4 include biomedical applications, nanotube-based devices, electronic applications of nanotubes and nanofibres, nanofluidics, and composites. Finally, the fifth section discusses recent developments in nanomaterials, nanoparticles and nanostructures.
Book Description
This special issue of Materials Science Forum contains the papers which were presented at the 1st International Meeting on Applied Physics (APHYS-2003), held in Badajoz (Spain), and more specifically, the selected papers which were presented during the conference sessions on Interfaces in Colloidal and Particulate Systems, covering Imaging Techniques, Microscopy; Nanoscience and Nanotechnology, Bioengineered Materials, Applied Materials Science / Solid State Physics & Chemistry / Advanced and Functional Materials and Semiconductor Materials and Devices. Volume is indexed by Thomson Reuters CPCI-S (WoS).
Author: Safa Kasap Publisher: Springer Science & Business Media ISBN: 0387291857 Category : Technology & Engineering Languages : en Pages : 1409
Book Description
Contributions from well known and respected researchers throughout the world Thorough coverage of electronic and opto-electronic materials that today's electrical engineers, material scientists and physicists need Interdisciplinary approach encompasses research in disciplines such as materials science, electrical engineering, chemical engineering, mechanical engineering, physics and chemistry
Author: David G. MCMaster
Author: David G. MCMaster
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Author: Donald T. Hawkins
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Author: S. R. Steele
Author: Selcuk Guceri
Author: A. Méndez-Vilas
Author: Safa Kasap