Abstract
Smooth inner pores of carbon nanotubes (CNT) provide a fascinating model for studying biological transport. We used an atomic force microscope to pull a single-stranded DNA oligomer from a carbon nanotube pore. DNA extraction from CNT pores occurs at a nearly constant force, which is drastically different from the elastic profile commonly observed during polymer stretching with atomic force microscopy. We show that a combination of the frictionless nanotube pore walls and an unfavorable DNA solvation energy produces this constant force profiles.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 1171-1176 |
| Number of pages | 6 |
| Journal | Nano Letters |
| Volume | 11 |
| Issue number | 3 |
| DOIs | |
| State | Published - Mar 9 2011 |
| Externally published | Yes |
Keywords
- carbon nanotubes
- CNT membrane
- DNA
- molecular friction
- nanofluidics
- Single molecule force spectroscopy
ASJC Scopus subject areas
- Condensed Matter Physics
- Bioengineering
- Chemistry(all)
- Materials Science(all)
- Mechanical Engineering
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Cite this
Lulevich, V., Kim, S., Grigoropoulos, C. P., & Noy, A. (2011). Frictionless sliding of single-stranded DNA in a carbon nanotube pore observed by single molecule force spectroscopy. Nano Letters, 11(3), 1171-1176. https://doi.org/10.1021/nl104116s