Positive charges lower, and negative charges raise the freezing temperature of supercooled water on a pyroelectric surface, as well as affecting at which interface nucleation takes place.
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References
Ehre, D., Lavert, E., Lahav, M. & Lubomirsky, I. Water freezes differently on positively and negatively charged surfaces of pyroelectric materials. Science 327, 672–675 10.1126/science.1178085(2010).
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Armstrong, G. Ice ice maybe. Nature Chem (2010). https://doi.org/10.1038/nchem.593
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DOI: https://doi.org/10.1038/nchem.593