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Direct Observation of Individual Charges and Their Dynamics on Graphene by Low-Energy Electron Holography.
Nano Lett ; 16(9): 5469-74, 2016 09 14.
Artigo em Inglês | MEDLINE | ID: mdl-27536886
ABSTRACT
Visualizing individual charges confined to molecules and observing their dynamics with high spatial resolution is a challenge for advancing various fields in science, ranging from mesoscopic physics to electron transfer events in biological molecules. We show here that the high sensitivity of low-energy electrons to local electric fields can be employed to directly visualize individual charged adsorbates and to study their behavior in a quantitative way. This makes electron holography a unique probing tool for directly visualizing charge distributions with a sensitivity of a fraction of an elementary charge. Moreover, spatial resolution in the nanometer range and fast data acquisition inherent to lens-less low-energy electron holography allows for direct visual inspection of charge transfer processes.

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Texto completo: Disponível Coleções: Bases de dados internacionais Base de dados: MEDLINE Idioma: Inglês Revista: Nano Lett Ano de publicação: 2016 Tipo de documento: Artigo País de afiliação: Suíça