Table 1.

Summary of CVD nanotube tip resolution data

MWNT tip number	01C	20E	38A	31G	38B
Radii ± 1σ, nm	3.7  ± 0.7	4.4  ± 0.5	5.7  ± 1.7	3.2  ± 0.7	5.3  ± 0.7
SWNT tip number	51A	58B	61A
Radii ± 1σ, nm	3.8  ± 0.7	3.0  ± 1.3	2.0  ± 0.4

The tips are defined by a specific number and a capital letter. The number designates a particular tip and the letter the growth cycle, where A = 1. The resolution was calculated using a two-sphere model using the full-width at half-maximum determined from the experimental images of 5.7-nm gold nanoparticles.