Progress On Electroless Silver Deposition Upon Carbon Nanofibers
Thomas Walker
Keywords:
nanotube, silver, deposition, nanofiber
Abstract:
The electroless deposition of silver onto nonconductive surfaces is of interest. This method is better than other methods because of its much higher deposition rate. A thin metal film is then deposited, and it autocatalytically builds thickness. As silver deposition is site-specific, one may use the technique to directly pattern onto silica. This application might be useful in computers. Deposition of silver upon nanofibers, however, was the present interest.
The literature uses silver and silver compounds as a seed layer to induce autocatalytic deposition. Though the present substrate was not of silicon, contamination was found. After the nanotubes were coated with nickel phosphate in the later trials, heat treatment was used to crystallize the nanotubes. Heat was later used in conjunction with ultrasonics, though never after plating.
More silver was present on the graphite (after ultrasonics and sensitization) than was seen in earlier trials. Flecks of silver were found on the graphite after the addition of ultrasonics and heat.