Figure 2From: Site-specific growth and density control of carbon nanotubes by direct deposition of catalytic nanoparticles generated by spark dischargeSEM images of selectively grown CNTs. (a) SEM image showing site-specific CNT growth. (b) Angled view of aligned CNTs showing the distinct edge of the pattern line. (c) Close-up view of the squared area in (b), showing the vertically aligned CNTs grown. (d) High-magnification SEM image showing the individual CNTs.Back to article page