Fig. 2.

Cross-sectional view at constant $z$ of the continuum model for the water-immersed (a) SWCNT: $R_{int}^{sw}$$=$ 0.17 nm and $R_{ext}^{sw}=0.51\mathrm{nm}$; (b) MWCNT: $R_{int}^{mw}$$=$ 7.3 nm and $R_{ext}^{mw}=15.5\mathrm{nm}$. The MWCNT is water filled, at variance with the SWCNT. The figures are not to scale.