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. Author manuscript; available in PMC: 2015 Nov 13.
Published in final edited form as: Nanotoxicology. 2013 Sep 30;8(8):867–875. doi: 10.3109/17435390.2013.837209

Figure 1.

Figure 1

A. Raman spectra of Gd-SWCNT and Fe-SWCNT showing characteristic D and G bands at 1369 cm−1 and 1580 cm−1.(B–E) Atomic Force Microscopy images of non-aggregated (B) Gd-SWCNT (C) Fe-SWCNT samples showing individual tubes and aggregated (D) Gd-SWCNT (E) Fe-SWCNT samples showing aggregated bundles of tubes. Individual Gd-SWCNT’s appear ~1–3 nm in height and ~600–800 nm in length. Individual Fe-SWCNT’s appear ~1–3 nm in height and ~1.5–3 μm in length.