Assembling Carbon Nanotubes Based on DEP and Fluid Driving

Assembling carbon nanotubes on micro-structures is the key to fabricate nano devices. Assembly of carbon nanotubes (CNTs) based on dielectrophoresis(DEP) and fluid driving are studied. Two types of multi-wall carbon nanotubes are used in the experiments. During DEP deposition, increasing voltage or deposition time, more CNTs are assembled. An appropriate flow velocity makes better assembly results in fluid driving assembly. According as the experimental results, the advantages and shortcomings of DEP and fluid driving assembly are concluded and compared. It indicates that DEP deposition can realize positional assembly between electrodes, while fluid driving assembly can uniformly array CNTs on a lager scale.