3D Tomo Carbon Nanotubes

Carbon nanotubes containing iron catalyst particles with TiO₂ powder. EFTEM tilt series acquired with a Tridiem energy filter from -50º to 50º. A plasmon series (5 eV slit, 17.6 eV energy), titanium L-23 series (30 eV slit, 2 pre-edge, 1 post-edge), and iron L-23 series (40 eV slit, 2 pre-edge, 1 post-edge) were collected. Elemental series for titanium (blue) and iron (red) were generated with Gatan elemental mapping software and combined with the plasmon series (green).