Mapping the electrostatic force field of single molecules from high-resolution scanning probe images

نویسندگان

  • Prokop Hapala
  • Martin Švec
  • Oleksandr Stetsovych
  • Nadine J. van der Heijden
  • Martin Ondráček
  • Joost van der Lit
  • Pingo Mutombo
  • Ingmar Swart
  • Pavel Jelínek
چکیده

How electronic charge is distributed over a molecule determines to a large extent its chemical properties. Here, we demonstrate how the electrostatic force field, originating from the inhomogeneous charge distribution in a molecule, can be measured with submolecular resolution. We exploit the fact that distortions typically observed in high-resolution atomic force microscopy images are for a significant part caused by the electrostatic force acting between charges of the tip and the molecule of interest. By finding a geometrical transformation between two high-resolution AFM images acquired with two different tips, the electrostatic force field or potential over individual molecules and self-assemblies thereof can be reconstructed with submolecular resolution.

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عنوان ژورنال:

دوره 7  شماره 

صفحات  -

تاریخ انتشار 2016