Novel Branched Nanostructures of Carbon Nanotubes on Si Substrates Suitable for the Realization of Gas Sensors

摘要

A novel tree-like nanostructure of carbon nanotubes is reported through the multi-stage growth of vertically aligned nanotubes, The growth of branched structures is feasible by means of a hydrogenation treatment of already grown carbon nanotubes on silicon substrates. Subsequent growth of CNTs would lead to the evolution of tree-like nano-structures Such branched nano-structures are useful for the formation of gas sensors as well as field emission devices and displays.