Extended Data Fig. 5: I–V characteristics of individual carbon nanotube porins.
From: Breakdown of the Nernst–Einstein relation in carbon nanotube porins
a. Schematics of the experimental set-up where a small area lipid bilayer with a single CNTP was formed over a SiNx nanopore fabricated on a silicon chip. An external voltage was applied across the bilayer to drive the ion transport through the CNTP channel. b. Current–voltage (I–V) curves recorded for an individual CNTP channel at different KCl concentrations, where the conductance obtained from the slopes of the linear fitting lines is 6.0 ± 0.7 pS at 5 mM KCl, 12.5 ± 3.5 pS at 20 mM KCl, 24.9 ± 5.8 pS at 50 mM KCl, and 35.8 ± 3.7 pS at 100 mM KCl. The conductance value recorded in a 100 mM KCl solution is similar to the value obtained in the CNTP insertion measurement.
