Table 1
Thickness of nanotube walls and inner diameters of tubes
Number of cycles	Thickness of nanotube walls (nm)	Inner diameter of nanotubes (nm)
0	9	90
1	13	84
5	17	72
10	18	70

Plylahan et al. Nanoscale Research Letters 2012 7:349   doi:10.1186/1556-276X-7-349