Abstract
Synthesis of Carbon Nanotubes (CNTs) was performed through the cold-walled and the hot-walled chemical vapor deposition(CVD) processes. CNTs in the forms of fluff and cable were produced in hot-walled horizontal and vertical tube furnaces, respectively; on the other hand, patterned CNTs were synthesized in the cold-walled CVD chamber. Depending on the designed form of CNTs, different processing routes and catalyst systems need to be used. On the application of patterned CNT array in the flexible field emission device, the transferred technique was used and a low turn-on voltage of 1.13 V/μm with the enhanced factor of 6,222 was achieved. On the application of fluff CNTs in the field of nanocomposites, hybrid nanocomposites containing CNTs and short carbon fibers were fabricated, and comparisons of mechanical properties among composites reinforced with short carbon fibers, CNTs, and hybrid reinforcements were made. Microstructures of the as-synthesized CNTs were examined by the Transmission Electron Microscope (TEM), and fracture morphologies of the nanocomposites were examined by the Field Emission Scanning Electron Microscope (FE-SEM).