Variations in pressure and temperature give rise to different phases of ice, which have varying properties and molecular geometries. Currently, twenty-one phases, including both crystalline and amorphous ices have been observed.

Cubic ice (Ice I c) is a metastable b ice crystal that can be formed (a) by condensation of water vapor at ambient pressure but at less than -80 °C, see Phase Diagram), (b) below about -38 °C in tiny droplets (≈ 6 μm diameter) [1013], and (c) by reducing the pressure on high-pressure ices at 77 K. Cubic ice is usually found as transitional state...

Ice Ic is a metastableb form of ice that can be formed, by condensation of water vapor, at ambient pressure but low temperatures (less than -80 °C, see Phase Diagram), or below about -38 °C in small droplets (~6 μm diameter) [1013] or by reducing the pressure on high-pressure ices at 77 K.

Feb 3, 2020 · Cubic ice Ic is formed by heating a powder of D 2 O ice XVII obtained from annealing of pristine C 0 hydrate samples under dynamic vacuum. Neutron diffraction experiments performed on two...

Mar 29, 2023 · Using cryogenic transmission electron microscopy combined with low-dose imaging, we show here the preferential nucleation of cubic ice at low-temperature interfaces, resulting in two types of...

Dec 11, 2012 · We follow the evolution of the stacking disorder as a function of time and temperature at conditions relevant to atmospheric processes; a continuous transformation toward normal hexagonal ice is observed.

Sep 11, 2020 · In this study, noncontact atomic force microscopy was used to address the characterization of the atomic structures of ice Ih (0001) and Ic (111) surfaces. The topmost hydrogen atoms are arranged with a short-range (2 × 2) order, independent of the ice thickness and growth substrates used.

May 27, 2020 · Two independent studies describe the discovery of structurally pure cubic ice Ic made from either ice XVII or a high-pressure hydrogen hydrate.

Ice Ic, so-called 'cubic ice', can be obtained, for example, from direct vapor deposition at low temps. or by warming of recovered high-pressure forms of ice. It is usually obtained as very small crystallites, leading to particle size broadening of the diffraction pattern.

May 5, 2014 · In this paper, we investigate the proton ordering of ice Ic using a combination of spectroscopic experiments and computer simulations.