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Probing nanotube-nanopore interactions.

G M King·J A Golovchenko
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Abstract

We demonstrate a new nanoscale system consisting of a nanotube threaded through a nanopore in aqueous solution. Its electrical and mechanical properties are sensitive to experimentally controllable conformational changes on sub-Angstrom length scales. Ionic current transport through a nanopore is significantly suppressed by the threading nanotube and the mechanical interactions between the nanotube and pore are accounted for by a folding geometry. The experiments provide first measurements of the longitudinal resolution and metrology of a solid-state nanopore "microscope." This new nanostructure provides a means to study molecule-nanotube interactions in conducting ionic solutions as well as geometrical and surface properties of nanopores and nanotubes.

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MembranesMembranes, ArtificialMicroscopy, Atomic ForceNanotubesJournal ArticleResearch Support, Non-U.S. Gov'tResearch Support, U.S. Gov't, Non-P.H.S.

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G M King, J A Golovchenko. 2005-11-18. Probing nanotube-nanopore interactions.. https://doi.org/10.1103/physrevlett.95.216103

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