Abstract
Graphene represents the ultimate substrate for high-resolution transmission electron microscopy, but the deposition of biological samples on this highly hydrophobic material has until now been a challenge. We present a reliable method for depositing ordered arrays of individual elongated DNA molecules on single-layer graphene substrates for high-resolution electron beam imaging and electron energy loss spectroscopy analysis. This method is a necessary step toward the observation of single elongated DNA molecules with single base spatial resolution to directly read genetic and epigenetic information.
Original language | English (US) |
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Pages (from-to) | 4232-4238 |
Number of pages | 7 |
Journal | Nano Letters |
Volume | 11 |
Issue number | 10 |
DOIs | |
State | Published - Oct 12 2011 |
Keywords
- DNA
- electronenergy loss spectroscopy
- genetics/epigenetics
- Graphene
- nanopatterning
- transmission electron microscopy
ASJC Scopus subject areas
- Condensed Matter Physics
- Bioengineering
- Chemistry(all)
- Materials Science(all)
- Mechanical Engineering