Abstract
Diblock copolymers of polystyrene and poly(methyl methacrylate) are utilized in a thin film to create a nanoscale template, which is used to deposit a nanoscale array of nickel nanodots. Systematic experiments show that this process must be optimized to successfully transfer the order of the diblock copolymer template to the resultant nickel nanodot array. It is found that the amount of nickel deposited dramatically impacts the fidelity of the final nanodot array, with a thickness ratio for copolymer:metal of 8:1 found to be optimal. The results also indicate that the method by which the surface is neutralized for the diblock domain alignment impacts the amount of nickel nanodots that remain on the surface after template removal. Finally, the nanoscale array of nickel nanodots is utilized to successfully grow vertically aligned carbon nanofibers from 18 nm and 40 nm diameter nickel dots.
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