A novel process which does not require the traditional Chemical Vapor
Deposition (CVD) synthesis techniques and which works at temperatures lower than the
conventional techniques was developed for synthesis of carbon nanotubes (CNT). The
substrates used for this study involved MEMS (Micro Electrical Mechanical Systems)
elements and passive elements. These were coated with Fullerene using Physical Vapor
Deposition or through a solution in an organic solvent. Catalyst precursors were
deposited on these Fullerene coated substrates using “wet processes”. These substrates
were then heated using either the integrated microheaters or external heaters in an inert
atmosphere to obtain CNT. Thus, in this process we tried to obviate the Chemical Vapor
Deposition (CVD) process for synthesis of CNT (SWCNT and MWCNT). The
synthesized CNT will be characterized using Scanning Electron Microscopy and Raman
spectroscopy techniques. Also, conductivity measurements were carried out for the
synthesized tubes using Dry (contact based) and Wet (electro-chemical) methods. This
work also proves the concept for the feasibility for a portable hand held instrument for
synthesis of CNT with tunable “on demand” chirality.
| Identifer | oai:union.ndltd.org:tamu.edu/oai:repository.tamu.edu:1969.1/ETD-TAMU-3191 |
| Date | 15 May 2009 |
| Creators | Gargate, Rohit Vasant |
| Contributors | Banerjee, Debjyoti |
| Source Sets | Texas A and M University |
| Language | en_US |
| Detected Language | English |
| Type | Book, Thesis, Electronic Thesis, text |
| Format | electronic, application/pdf, born digital |
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