Work

Translocation of Single-Wall Carbon Nanotubes Through Solid-State Nanopores

Year: 2011

Type: article

Abstract: We report the translocation of individual single-wall carbon nanotubes (SWNTs) through solid-state nanopores. Single-strand DNA oligomers are used to both disperse the SWNTs in aqueous solution and to provide them with a net charge, allowing them to be driven through the nanopores by an applied electric field. The resulting temporary interruptions in the measured nanopore conductance provide quantitative information on the diameter and length of the translocated nanotubes at a single-molecule level. Furthermore, we demonstrate that the technique can be utilized to monitor bundling of SWNT in solution by using complementary nucleotides to induce tube-tube agglomeration.

Source: Nano Letters

DOI: 10.1021/nl200873w

Authors: Adam R. Hall, Johannes M. Keegstra, Matthew C. Duch, Mark C. Hersam, Cees Dekker

Institutions: University of North Carolina at Greensboro, Delft University of Technology, Northwestern University

Language: English

Topic: Nanopore and Nanochannel Transport Studies

Subfield: Biomedical Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: green

Funders: National Heart, Lung, and Blood Institute, National Center for Research Resources

Awards: Multidisciplinary Clinical and Translational Science (MCTS) Program (UL1), Training Program in Lung Sciences