Journal article
Mean Inner Potential of Liquid Water
National Centre for Nano Fabrication and Characterization, Technical University of Denmark1
Nanocharacterization, National Centre for Nano Fabrication and Characterization, Technical University of Denmark2
Molecular Windows, Nanocharacterization, National Centre for Nano Fabrication and Characterization, Technical University of Denmark3
Department of Photonics Engineering, Technical University of Denmark4
Electron matter interaction, Nanocharacterization, National Centre for Nano Fabrication and Characterization, Technical University of Denmark5
Pacific Northwest National Laboratory6
Improving our experimental and theoretical knowledge of electric potentials at liquid-solid boundaries is essential to achieve a deeper understanding of the driving forces behind interfacial processes. Electron holography has proved successful in probing solid-solid interfaces but requires knowledge of the materials’ mean inner potential (MIP, V0), which is a fundamental bulk material property.
Combining off-axis electron holography with liquid phase transmission electron microscopy (LPTEM), we provide the first quantitative MIP determination of liquid water V0 ¼ þ4.48 0.19 V. This value is larger than most theoretical predictions, and to explain the disagreement we assess the dominant factors needed in quantum simulations of liquid water.
A precise MIP lays the foundations for nanoscale holographic potential measurements in liquids, and provides a benchmark to improve quantum mechanical descriptions of aqueous systems and their interfaces in, e.g., electrochemistry, solvation processes, and spectroscopy.
Language: | English |
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Year: | 2020 |
Pages: | 065502 |
ISSN: | 10797114 and 00319007 |
Types: | Journal article |
DOI: | 10.1103/physrevlett.124.065502 |
ORCIDs: | Yesibolati, Murat Nulati , 0000-0002-5072-7019 , Beleggia, Marco , Mølhave, Kristian and Kasama, Takeshi |