Structure of ice crystallized from supercooled water

Structure of ice crystallized from supercooled water.

The freezing of water to ice is fundamentally important to fields as diverse as cloud formation to cryopreservation. At ambient conditions, ice is considered to exist in two crystalline forms: stable hexagonal ice and metastable cubic ice. Using X-ray diffraction data and Monte Carlo simulations, we show that ice that crystallizes homogeneously from supercooled water is neither of these phases....

The Double-Pyramid Structure of Dendritic Ice Growing From Supercooled Water

It is known that ice growing freely from supercooled water has a morphological transition at T= -2.7C, from a flat dendritic structure at higher temperatures to a twelve-sided doublepyramid structure at lower temperatures. The double-pyramid structure, which can be described as two hollow six-sided pyramids joined at their apices, is built from dendrites growing in well defined growth direction...

The structure of water; from ambient to deeply supercooled

Interface-limited growth of heterogeneously nucleated ice in supercooled water.

Heterogeneous ice growth exhibits a maximum in freezing rate arising from the competition between kinetics and the thermodynamic driving force between the solid and liquid states. Here, we use molecular dynamics simulations to elucidate the atomistic details of this competition, focusing on water properties in the interfacial region along the secondary prismatic direction. The crystal growth ve...

Molecular dynamics simulation of ice growth from supercooled pure water and from salt solution

The kinetics of ice growth on the prismatic and basal planes is studied by molecular dynamics simulations. The time evolution of two systems has been investigated. In one a slab of ice is initially in contact with supercooled water, while in the second the ice is in contact with a supercooled salt solution. The simulations were done at a temperature below the eutectic temperature, and complete ...