Ay. Cao et al., Grapevine-like growth of single walled carbon nanotubes among vertically aligned multiwalled nanotube arrays, APPL PHYS L, 79(9), 2001, pp. 1252-1254
Large arrays of self-oriented, multiwalled carbon nanotubes (MWNTs) have be
en obtained by chemical vapor deposition. It has so far been impossible to
translate this idea for growing single walled nanotubes (SWNTs) but we show
here that oriented growth of SWNTs among vertically aligned MWNT arrays ca
n be realized by the catalytic pyrolysis of ferrocene and xylene. The MWNTs
act as the support structures for SWNTs, forcing them to grow upward stead
ily, like grapevines. The growth of vertically aligned SWNT over large area
s brings about the possibility of exploring their properties in select conf
igurations. (C) 2001 American Institute of Physics.