Freezing Behavior of 2D Ice Crystals

  • Author: Liam Critchley
  • Published: 16 April 2019
  • Copyright: Wiley-VCH Verlag GmbH & Co. KGaA
  • Source / Publisher: ACS Nano/ACS Publications
  • Associated Societies: American Chemical Society (ACS), USA
thumbnail image: Freezing Behavior of 2D Ice Crystals

When water freezes into ice, it usually follows a heterogeneous nucleation process. The most common form of ice under ambient pressure is a hexagonal diamond lattice, but a metastable diamond cubic lattice also exists. In bulk systems, the nucleation medium influences both the crystallization and the morphology of the ice crystals.

Tianshu Li and colleagues, George Washington University, Washington, D.C., USA, have used molecular dynamics (MD) simulations to investigate if water restricted to form 2D ice crystals within a hydrophobic slit nanopore shows different freezing behaviors to a bulk water system. The researchers simulated the slit by placing graphene sheets back to back.

The team found that the freezing behavior in two dimensions is different from that of bulk water systems. Trilayered ice was found to crystallize into a well-ordered, hexagonal structure. 2D ice does not show any metastable cubic morphologies, because the cubic stacking sequence has a lower thermodynamic stability than a hexagonal sequence at the interface.


Article Views: 2285

Sign in Area

Please sign in below

Additional Sign In options

Please note that to comment on an article you must be registered and logged in.
Registration is for free, you may already be registered to receive, e.g., the newsletter. When you register on this website, please ensure you view our terms and conditions. All comments are subject to moderation.

Article Comments - To add a comment please sign in

Bookmark and Share

If you would like to reuse any content, in print or online, from, please contact us first for permission. more

CONNECT: on Facebook on Twitter on YouTube on LinkedIn Sign up for our free newsletter

Magazine of Chemistry Europe (16 European Chemical Societies)published by Wiley-VCH