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Feb 5, 2023 · Amorphous ice is usually low density, around 0.94 grams per cubic centimeter, or high density, starting at 1.13 grams per cubic centimeter. The new ice has a density of 1.06 grams per cubic centimeter – clocking in incredibly close to the density of water, at 1 gram per cubic centimeter. Researchers led by chemist Alexander Rosu-Finsen ...
Feb 7, 2023 · ‘Low-density’ amorphous ice is the result of water vapour freezing onto a very cold surface, at a temperature lower than –150 ˚C; ‘high-density’ amorphous ice forms by compressing ...
- Jonathan O'callaghan
Oct 30, 2017 · Amorphous ice can be classified as Low Density (LDA) at 0.94g/ml, High Density (HDA) at 1.17g/ml or Very High Density (VHDA) at 1.26g/ml. The form that the amorphous ice assumes depends on its mechanism of formation in which the key factors are temperature and pressure.
- Nicole Rogers
Feb 2, 2023 · The team found that ball-milling created an amorphous form of ice, which unlike all other known ices, had a density similar to that of liquid water and whose state resembled water in solid form. They named the new ice medium-density amorphous ice (MDA). To understand the process at the molecular scale the team employed computational simulation.
Feb 4, 2023 · Amorphous ice was first discovered in its low-density form in the 1930s when scientists condensed water vapor on a metal surface cooled to -110 degrees Centigrade. Its high-density state was discovered in the 1980s when ordinary ice was compressed at nearly -200 degrees Centigrade.
Feb 20, 2024 · Amorphous ices are usually classified as belonging to low-density or high-density amorphous ice (LDA and HDA) with densities ρLDA ≈ 0.94 g/cm3 and ρHDA ≈ 1.15−1.17 g/cm3.
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What is low density amorphous ice?
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Feb 10, 2023 · A new form of ice very similar in molecular structure to liquid water (left), compared to ordinary crystalline ice (right). Credit: University of Cambridge A happy medium. Amorphous ices have been suggested to be models for liquid water. Until now, there have been two main types of amorphous ice: high-density and low-density amorphous ice.
