1. 1 Synthesis of Carbon nanotubes by Chemical Vapor Deposition Amit Khosla Mechanical Engineering University of Colorado Advisor: Prof. Roop. L. Mahajan Introduction to Research- MCEN 5028

2. 2 Introduction -Carbon Nanotubes  Carbon nanotubes, long, thin cylinders of carbon, were discovered in 1991 by S. Iijima  They can be thought of as a sheet of graphite (hexagonal lattice of carbon) rolled into cylinder  Mechanical property- Young Modulus of 1TPA  Electronic Properties- Semiconductor or metal  Thermal Properties- Conductivity at room temperature- 3000 W/ m.k Introduction to Research- MCEN 5028

3. 3 Motivation To have an in house facility to produce carbon nanotubes for development of Thermal interface material using structured carbon nanotube arrays Carbon nanotube-epoxy composites Carbon nanotube based paint Introduction to Research- MCEN 5028

4. 4 Research Approach Chemical vapor deposition set up Parameters to be varied are:  Temperature, Mass Flow Rate, Hydrocarbon source, Carrier gas, Deposition Metal Introduction to Research- MCEN 5028

5. 5 Synthesis: CVD Large scale possible Relatively cheap SWNTs / MWNTs Aligned nanotubes Introduction to Research- MCEN 5028

6. 6 Schedule Task Sep-Oct’04Nov-Dec’04Jan-Feb’05Mar-Apr’05 Literature Review Design and build Set up Experiments Analysis Introduction to Research- MCEN 5028