Figure 11.

HREM image of the carbon onion with a constant layer interspacing (ca. 0.33 nm), which was typically formed after prolonged (>30min) electron irradiation on a carbon-coated collodion film in this study.

Huang et al. Nanoscale Research Letters 2009 4:1286-1296   doi:10.1007/s11671-009-9394-7