Comment on “Electrostatics of Individual Single-Walled Carbon Nanotubes Investigated by Electrostatic Force Microscopy”

A Comment on the Letter by M. Paillet, P. Poncharal, and A. Zahab, Phys. Rev. Lett. 94, 186801 (2005). The authors of the Letter offer a Reply.

Figure 1

(a) EFM signals ($V_{\mathrm{EFM}}=-3\mathrm{V}$) recorded across a 15 nm-diameter MWCNT [see horizontal line in (b)] before charging, after charging ($V_{\mathrm{inj}}=-6\mathrm{V}$ for 2 min), and after the MWCNT discharge. (b) EFM image of the discharged MWCNT. The scale bar is 500 nm. (c) Similar EFM signals acquired on a 3.0 nm-diameter SWCNT. (d) EFM image of the discharged SWCNT. The scale bar is 300 nm.