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Maximizing Carbon Nanotube Forest Growth With 99.5% Pure Ethylene

Student Name: Black, Scott
Advisor Name: Davis, Robert
Approval Date: 7/1/2009
Report Type: Capstone
Title: Maximizing Carbon Nanotube Forest Growth With 99.5% Pure Ethylene
Abstract: A new growth recipe for height maximization of carbon nanotubes (CNTs) by thermal chemical vapor deposition is found using an ethylene purity of 99.5%. This new recipe yields fast growthrates with average growth heights of 1146 μm in 10 minutes of growth. The CNT forest growth is very uniform but also has tears in structures, bowed vertical growth, and rough sidewalls indicating a poor quality CNT forest. These poor features seem to be a result of the thickness of the iron catalyst layer. With a thicker catalyst layer, high quality CNT forests may potentially be grown using 99.5% pure ethylene with faster growth rates than the current standard growth recipe for CNTs using 99.95% pure ethylene.
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