Unidirectional Alignment of Carbon Nanotube Aggregates Using Friction-transferred Polymeric Films

Abstract Aggregates of single-walled carbon nanotubes (SWCNTs) were deposited unidirectionally on highly oriented PTFE film made by friction transfer. The friction-transferred PTFE film possesses many straight channels of various sizes running along the transfer direction. SWCNT aggregates were preferentially deposited parallel to the channels when SWCNTs in a form of dry powder were sprinkled, as confirmed by Raman microscopy and anisotropic electrical resistivity. Furthermore, the SWCNT film can be transferred to another substrate surface by simply stamping the SWCNT/PTFE film on it.