Motion of water monomers reveals a kinetic barrier to ice nucleation on graphene

Anton Tamtögl*, Emanuel Bahn, Marco Sacchi*, Jianding Zhu, David J. Ward, Andrew P. Jardine, Stephen J. Jenkins, Peter Fouquet, John Ellis, William Allison

*Corresponding author for this work

Research output: Contribution to journalArticle

Abstract

The interfacial behaviour of water remains a central question to fields as diverse as protein folding, friction and ice formation. While the properties of water at interfaces differ from those in the bulk, major gaps in our knowledge limit our understanding at the molecular level. Information concerning the microscopic motion of water comes mostly from computation and, on an atomic scale, is largely unexplored by experiment. Here, we provide a detailed insight into the behaviour of water monomers on a graphene surface. The motion displays remarkably strong signatures of cooperative behaviour due to repulsive forces between the monomers, enhancing the monomer lifetime ( ≈ 3 s at 125 K) in a free-gas phase that precedes the nucleation of ice islands and, in turn, provides the opportunity for our experiments to be performed. Our results give a molecular perspective on a kinetic barrier to ice nucleation, providing routes to understand and control the processes involved in ice formation.
Original languageEnglish
Article number3120
Number of pages8
JournalNature Communications
Volume12
DOIs
Publication statusPublished - 2021

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Chemistry(all)
  • Biochemistry, Genetics and Molecular Biology(all)

Fields of Expertise

  • Advanced Materials Science

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