Figure 2.

FE-SEM images of CNTs. FE-SEM images of CNTs grown on (a) Ti substrate, (b) 20-nm Au buffer layer/Ti substrate (c) 40-nm Au buffer layer/Ti substrate, and (d) 60-nm Au buffer layer/Ti substrate.

Gwon et al. Nanoscale Research Letters 2012 7:61   doi:10.1186/1556-276X-7-61
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