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. Author manuscript; available in PMC: 2009 Aug 27.
Published in final edited form as: Nano Lett. 2005 Dec;5(12):2448–2464. doi: 10.1021/nl051748o

Figure 1.

Figure 1

Scanning electron microscopy (SEM) images and high-resolution transmission electron microscopy (HRTEM) images of carbon nanomaterials used in this study. (A) SEM image of multiwalled carbon nanotubes (scale bar = 200 nm). (B) SEM image of carbon nano-onions (scale bar = 200 nm). (C) HRTEM images of multiwalled carbon nanotubes (MWCNTs) (scale bar = 5 nm). (D) HRTEM images of multiwalled carbon nano-onions (MWCNO) (scale bar = 10 nm).