Figure 3.

Cross-sectional views of ZG MWCNTs with different radii of the innermost walls. From left to right on each row, the wall numbers are 5, 10, 15, 20, and 25. Top ZG MWCNTs with initial, unrelaxed innermost wall radius of 2.1 nm; middle ZG MWCNTs with initial, unrelaxed innermost wall radius of 3.8 nm; bottom ZG MWCNTs with initial, unrelaxed innermost wall radius of 5.6 nm.

Huang et al. Nanoscale Res Lett 2011 6:53   doi:10.1007/s11671-010-9801-0