Nanotech - Production of Carbon Nanotubes 1. Laser...

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Production of Carbon Nanotubes 1. Laser evaporation 2. Carbon arc techniques 3. Chemical vapor deposition
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Laser Evaporation Method • Graphite workpiece containing small amount of Co and Ni • Act as nucleation sites • Put into tube with argon gas • Diameters of 10- 20nm and lengths of about 100μm
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Carbon Arc Techniques • Two carbon electrodes 5-20μm in diameter 1mm apart • He • 25V applied • Tubes formed on negative electrode • 1-5nm in diameter 1μm long
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Chemical Vapor Deposition • Hydrocarbon gas like methane • Decomposes and releases carbon • Condenses on a cool substrate • Continuous fabrication
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Nanomedicine constructing miniaturized tetherless medical tools for in vivo diagnostics and therapeutics Small enough to pass through the various conduits in the body, such as the gastrointestinal tract, the reproductive or the circulatory system
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Nanorobots in Surgery video imaging and capturing devices insufflation instruments such as Veress needles
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Nanotech - Production of Carbon Nanotubes 1. Laser...

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