Discrete dynamics of nanoparticle channelling in suspended graphene.
نویسندگان
چکیده
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.
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عنوان ژورنال:
- Nano letters
دوره 11 7 شماره
صفحات -
تاریخ انتشار 2011