Discrete dynamics of nanoparticle channelling in suspended graphene.
basic_science · Level V
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- Record sourced from PubMed, PMID 21657238.
- Also identified by DOI 10.1021/nl200928k.
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Abstract
We have observed a previously undescribed stepwise oxidation of mono- and few layer suspended graphene by silver nanoparticles in situ at subnanometer scale in an environmental transmission electron microscope. Over the range of 600-850 K, we observe crystallographically oriented channelling with rates in the range 0.01-1 nm/s and calculate an activation energy of 0.557 ± 0.016 eV. We present a discrete statistical model for this process and discuss the implications for accurate nanoscale patterning of nanoscale systems.
Medical subject headings
- Graphite
- Metal Nanoparticles
- Silver
- Thermodynamics