Figure 4.

Characterization of clusters at the end of the grown SWCNT. Representative AFM images showing a globule at one end of the as-grown catalyst-free SWCNT along with the height profile of such globule feature to the right while the height profile of the grown CNT is to the left of the AFM image.

Ibrahim et al. Nanoscale Research Letters 2013 8:265   doi:10.1186/1556-276X-8-265
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