We present some early results on the controlled growth of carbon nanotubes inside lateral porous
alumina templates. Such lateral templates provide an easy way of organizing nano-objects in the
plane of their supporting substrate, with potential densities of more than 100/μm, thus paving the
way for the realization of dense circuits. Here we discuss the growth conditions inside the lateral
pores of the templates, with the aim of avoiding the parasitic deposition of amorphous carbon. Our
organization method should also apply to other nanostructures such as semiconductor nanowires.