Homogeneous nucleation of predominantly cubic ice confined in nanoporous alumina.
basic_science · Level V
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- Record sourced from PubMed, PMID 25686014.
- Also identified by DOI 10.1021/nl504855z.
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Abstract
The nucleation mechanism of water can be precisely regulated by confinement within nanoporous alumina. We found a transition from heterogeneous nucleation of hexagonal ice (Ih) to homogeneous nucleation of predominantly cubic ice (Ic) with decreasing pore diameter. These results lead to a phase diagram of water under confinement. It contains a (stable) predominant Ic form, a form known to exist only in the upper atmosphere. Possible applications range from cryopreservation to construction materials like cement.