Electronic detection of molecules on the exterior and molecular transport through the interior of single walled carbon nanotubes

[摘要] (cont.) By analyzing pore-blocking events caused by ions, we report for the first time 1) high ionic mobility through the SWNT interior, 2-3 orders of magnitude higher than the bulk mobility, 2) proton conductivity of ~ 10³ S/cm through the SWNT interior, 4 orders of magnitude higher than the Nafion proton exchange membrane and the highest ever reported, 3) proton/alkali ion separation factor of ~ 6x10⁷, 4) evidence of stochastic resonance in SWNT ion channels.

[发布机构] Massachusetts Institute of Technology