Fabrication of well-aligned SWNT arrays using colloidal self-assembly

A novel method to fabrication of well-aligned SWNT arrays on SAM-modified ITO glass substrates, using a well dispersed ef-SWNT solution, a supporting frame consisting of a monolayer of monodisperse silica beads, and the appropriate electric fields, has been developed. The use of the colloidal monolayer as a supporting frame enables the vertical alignment of the SWNTs on the ITO substrate. This method has the following advantages over the previously reported ones: low CNT consumption, mild temperature conditions, and large area deposition.