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21 February 2007 From highly efficient impurity-free CNT synthesis to DWNT forests, CNT solids, and super-capacitors
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Abstract
We demonstrate an extremely efficient chemical vapour deposition synthesis of single-walled carbon nanotubes where the activity and lifetime of the catalysts are enhanced by controlling the ambient of the CVD furnace, a growth mode we call "Super Growth" [1]. The enhanced catalytic activity of super growth results in massive growth of super-dense and vertically-aligned single-walled nanotubes forests with heights up to 2.5 millimeters. In addition, these SWNT forests were easily separated from the catalysts, producing the most pure SWNT material (over 99.98%) ever made, through an all-dry process without any purification. Moreover, patterned highly organized intrinsic single-walled nanotube structures were successfully fabricated. Super Growth simultaneously addresses many critical problems such as scalability, purity, and cost, and opens up innumerable opportunities ranging from fundamental research to real applications.
© (2007) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Kenji Hata "From highly efficient impurity-free CNT synthesis to DWNT forests, CNT solids, and super-capacitors", Proc. SPIE 6479, Quantum Sensing and Nanophotonic Devices IV, 64791L (21 February 2007); https://doi.org/10.1117/12.716279
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