Charged nanoparticle dynamics in water induced by scanning transmission electron microscopy.

@article{White2012ChargedND,
  title={Charged nanoparticle dynamics in water induced by scanning transmission electron microscopy.},
  author={Edward Robert White and Matthew Herman Mecklenburg and Brian Shevitski and Scott Benjamin Singer and Brian Christopher Regan},
  journal={Langmuir : the ACS journal of surfaces and colloids},
  year={2012},
  volume={28 8},
  pages={
          3695-8
        }
}
Using scanning transmission electron microscopy we image ~4 nm platinum nanoparticles deposited on an insulating membrane, where the membrane is one of two electron-transparent windows separating an aqueous environment from the microscope's high vacuum. Upon receiving a relatively moderate dose of ~10(4) e/nm(2), initially immobile nanoparticles begin to move along trajectories that are directed radially outward from the center of the field of view. With larger dose rates the particle motion… CONTINUE READING
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