Cutting Ice: Nanowire regelation

Teemu Hynninen, Vili Heinonen, Christian L. Dias, Mikko Karttunen, Adam S. Foster, Tapio Ala-Nissila

Research output: Contribution to journalArticleScientificpeer-review

14 Citations (Scopus)
13 Downloads (Pure)

Abstract

Even below its normal melting temperature, ice melts when subjected to high pressure and refreezes once the pressure is lifted. A classic demonstration of this regelation phenomenon is the passing of a thin wire through a block of ice when sufficient force is exerted. Here we present a molecular-dynamics study of a nanowire cutting through ice to unravel the molecular level mechanisms responsible for regelation. In particular, we show that the transition from a stationary to a moving wire due to increased driving force changes from symmetric and continuous to asymmetric and discontinuous as a hydrophilic wire is replaced by a hydrophobic one. This is explained at the molecular level in terms of the wetting properties of the wire.
Original languageEnglish
Article number086102
Pages (from-to)1-4
JournalPhysical Review Letters
Volume105
Issue number8
DOIs
Publication statusPublished - 2010
MoE publication typeA1 Journal article-refereed

Keywords

  • depinning
  • dynamic critical phenomena
  • pressure melting
  • regelation
  • water simulation

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