Diffusion mechanisms in metallic supercooled liquids and glasses

Article Abstract:

Combined spin alignment echo technique and diffusion research suggests that the long-range transport of Be atoms in the supercooled liquid state (SLS) is due to two diffusion processes. One of these processes is single-atom hopping. The other, which dominates in the SLS, does not substantially alter the truncated quadrupole interactions at most Be sites over the average time interval between two hopping events. This indicates that this process is collective, with most of the nearest neighbours of Be atoms participating.

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Dynamics of supercooled water in confined geometry

Article Abstract:

The relaxation dynamics of supercooled water in a wide temperature range were studied using broad-band dielectric spectroscopy. A relaxational process with an Arrhenius temperature dependence was found, consistent with the strong nature of deeply supercooled bulk water, supporting the existence of a fragile-strong transition.

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Deep convective clouds with sustained supercooled liquid water down to -37.5 degrees C

Article Abstract:

It has been possible to make in situ measurements in deep connective clouds from a Lear jet. It was established that most of the condensed water remains liquid down to -37.5 degrees C. At slightly colder temperatures, only ice was found.

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