English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

Because of the negative inclination of the solid-liquid phase separation linein water, ice Ih melts on compression. On further increase in pressure theliquid water transforms into a high density metastable glassy state,characterized by a rapid approach to zero diffusion coefficient and an absenceof any crystalline order in the static structure factor. The vitrification isfound to occur even at high temperatures (T > 250 K). We study this glasstransition process at four temperatures (80 K, 250 K, 300 K and 320 K). Thetransition pressure increases with increase in temperature, as expected.Interestingly, we find that the total entropy of the system exhibits a sharpcrossover near the glass transition pressure where the diffusion of water goesto zero. The diffusion coefficient shows an exponential dependence on theproperly defined excess entropy. In an interesting result not reported before,we find a pressure induced realignment of water molecules resulting in two wellseparated peaks in the O-O-O angle distribution among neighbouring molecules.The difference between the positions of these two peaks undergoes a sharpchange at the vitrification pressure suggesting that it can serve as anappropriate order parameter to detect the glass transition point.

Signatures of Surprising Diffusion-Entropy Scaling across Pressure Induced Glass Transition in Water