Related Experiment Video
Updated: Jun 15, 2025
08:01
A Microfluidic Approach for the Study of Ice and Clathrate Hydrate Crystallization
Published on: August 18, 2022
3.0K
Quasi-one-dimensional hydrogen bonding in nanoconfined ice
Pavan Ravindra1,2, Xavier R Advincula1,3,4, Christoph Schran3,4
1Yusuf Hamied Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW, UK.
Nature Communications
|August 24, 2024
Summary
Nanoconfined ice can form unusual 1D structures with only two hydrogen bonds per molecule, deviating from standard ice rules. This leads to unique proton behavior and properties distinct from bulk water.
Area of Science:
- Materials Science
- Condensed Matter Physics
- Physical Chemistry
Background:
- The Bernal-Fowler ice rules dictate four hydrogen bonds per water molecule in ice crystals.
- Deviations from these rules occur under extreme or confined conditions, altering water's properties.
Purpose of the Study:
- To identify novel stabilization mechanisms in nanoconfined ice phases.
- To investigate the structural and proton dynamics of ice under nanoconfinement.
Main Methods:
- Utilized machine learning-driven first-principles simulations.
- Analyzed hydrogen bonding and van der Waals interactions in nanoconfined ice structures.
Main Results:
- Discovered quasi-one-dimensional hydrogen-bonded ice structures with only two hydrogen bonds per water molecule.
- Identified linear chains of water molecules stabilized by van der Waals interactions.
- Observed atypical proton behavior including potential ferroelectricity and low dielectric response.
Conclusions:
- Nanoconfinement enables new ice structures that violate conventional hydrogen bonding rules.
- The interplay of hydrogen bonding and van der Waals forces governs unique proton dynamics and properties in confined ice.
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