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Updated: Jun 26, 2026

Probing the Structure and Dynamics of Interfacial Water with Scanning Tunneling Microscopy and Spectroscopy
Published on: May 27, 2018
Electron damage to supported ice investigated by scanning tunneling microscopy and spectroscopy
Michael Mehlhorn1, Heiko Gawronski, Karina Morgenstern
1Institut für Festkörperphysik, Leibniz Universität Hannover, Appelstrasse 2, D-30167 Hannover, Germany.
Abstract:
We study the interaction of low-energy electrons with crystalline ice (D2O) on Cu(111) by low-temperature scanning tunneling microscopy and spectroscopy. Electrons induce dissociation of the molecules with a threshold of approximately 3 eV. The large dissociation yield of the order of 10(-8)/electron and the extended area of dissociation are attributed to a shift in conduction band during the dissociation. Voltage dependent differences in imaging of ice and dissociated ice are reflected in the spectroscopic signature.
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