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RASIRC™, the steam purification company, reports research findings indicating that the addition of ultra-pure water vapor during the formation of carbon nanotubes affects all aspects of their development including length, shape, and purity. The paper, Water Vapor and Carbon Nanotubes, by Jeffrey Spiegelman, is available at
Precisely delivered ultra-pure water vapor in the production of carbon nanotubes has been shown to significantly improve the growth rate and uniformity of the carbon nanotubes. Water vapor controls the length, structure, contamination of metals and amorphous carbon, continuity of the tube wall, and performs post chemical vapor deposition cleaning of the carbon nanotubes. It therefore controls appearance, yield, and how free the structure is of contaminants.
Ultra-pure water vapor is manufactured and delivered via a new technology developed by RASIRC. The RainMaker Humidification System starts with industrial grade deionized water, then uses a special non-porous membrane to remove molecular oxygen and other contaminants from the water supply, so the process is repeatable and stable.
The paper explains each area of carbon nanotube development and improvements that result from the delivery of ultra-pure steam at each point in the process.
RASIRC products purify and deliver ultra pure liquids and gases. RASIRC technology is the first to generate ultra high purity (UHP) steam from de-ionized water. It reduces cost, improves yield, and improves safety. UHP steam has many applications in the semiconductor industry, nanotechnology, photovoltaic manufacturing and related industries. Call 858-259-1220, e-mail
For more information, please click here
Jeffrey Spiegelman, 858-259-1220
A R Marketing, Inc
Andrea Roberts, 858-451-8666
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