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234 CARBON NANOTUBES, PILLARED CLAYS, AND POLYMERIC RESINS
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Figure 9.2. TEM images of hollow graphite filaments grown from n-heptane on Fe at 1100 C,
taken from Hilbert and Lange (1958). Magnification = 75,000 and 110,000 (far right).
2nm
Figure 9.3. High-resolution TEM image of 0.35 nm graphitic layers in a hollow carbon filament
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grown from methane over Ni at 650 C. Insert shows area at low magnification in square. Taken
from Fryer (1979) and Baird et al. (1974). Baird et al. (1971) showed similar images of a hollow
filament with graphitic sheets along the axis at 0.34 nm spacing.
