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anoscale structures need to be arranged into well-defined configura-
 

Summary: N
anoscale structures need to be
arranged into well-defined configura-
tions in order to build integrated
systems. Here we use a chemical-vapour
deposition method with gas-phase catalyst
delivery to direct the assembly of carbon
nanotubes in a variety of predetermined
orientations onto silicon/silica substrates,
building them into one-, two- and three-
dimensional arrangements. The preference
of nanotubes to grow selectively on and
normal to silica surfaces forces them
to inherit the lithographically machined
template topography of their substrates,
allowing the sites of nucleation and the
direction of growth to be controlled.
Although carbon nanotubes promise to
have a wide range of applications1
, better

  

Source: Ajayan, Pulickel M. - Department of Mechanical Engineering and Materials Science, Rice University

 

Collections: Materials Science