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. Author manuscript; available in PMC: 2013 Mar 2.
Published in final edited form as: Nanotechnology. 2012 Feb 1;23(8):085203. doi: 10.1088/0957-4484/23/8/085203

Figure 4.

Figure 4

The electrical response of opened semiconducting SWCNTs to different cations. (a) Typical Ids vs. Vgs curves when the opened SWCNT (device 2) was exposed to 1mM KCl (red), NaCl (green) and LiCl (black) solutions respectively at Vds=0.5V. (b) Gating efficiency ΔI/I-(black squares) and ionic conductance ratio (normalized with GKCl) (blue solid circles) in three different 1mM ionic solutions for the same SWCNT device are shown. The ionic conductance ratios in PDMS micron size channels are also displayed for comparison (blue open circles).