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Keywords:

  • carbon;
  • conductance;
  • nanostructures;
  • scanning probe microscopy;
  • tunneling mechanism
Thumbnail image of graphical abstract

Get to know the onion: Conductance measurements for functionalized carbon nano-onions were conducted using an STM-based molecular junction approach (see picture). It was found that electron transmission through these systems occurs by a tunneling mechanism. The carbon-based core seems to provide a very efficient medium for electron transmission, with conductance values comparable to those of metallic nanowires.