Title - Nanotechnology Research and Development - Lance Delzeit
The development of carbon nanotube devices requires the ability to produce both single- and multi-walled carbon nanotubes with a wide range of characteristics. For example, microscopy applications require growth of a single nanotube at the tip of a cantilever. On the other hand, field emission applications would require controlled growth over a large area. In all cases, defect- free nanotubes with 100% purity are desirable.

I have been working on techniques that will allow for the growth of single-and multi-walled carbon nanotubes with a variety of densities. The various catalytic formulas are deposited onto the surface of interest through ion beam sputtering. This technique can also be used with standard shadow masking methods to produce growths of NTs within a patterned area.

Other procedures are also being investigated to remove the amorphous carbon and metal contamination from the carbon nanotubes. These procedures are done following the growth of the NTs with further investigation into the ability to remove the contamination during the growth process itself.

These techniques will be combined with Plasma Enhanced Chemical Vapor Deposition to create an even more flexible platform upon which to grow carbon nanotubes.

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Email: ldelzeit@mail.arc.nasa.gov
Phone: 650-604-0236
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