Phase transitions induced by nanoconfinement in liquid water

Nicolas Giovambattista, Peter J. Rossky, Pablo G. Debenedetti

Research output: Contribution to journalArticle

166 Scopus citations

Abstract

We present results from molecular dynamics simulations of water confined by two parallel atomically detailed hydrophobic walls. Simulations are performed at T=300K and wall-wall separation d=0.6-1.6nm. At 0.7≤d≤0.9nm, a first order transition occurs between a bilayer liquid (BL) and a trilayer heterogeneous fluid (THF) as water density increases. The THF is characterized by a liquid (central) layer and two crystal-like layers next to the walls. The BL-THF transition involves freezing of the two surface layers in contact with the walls. At d=0.6nm, the THF transforms into a bilayer ice (BI) upon decompression. Both the BL-THF and BI-THF transitions are induced by the surface regular atomic-scale structure.

Original languageEnglish (US)
Article number050603
JournalPhysical review letters
Volume102
Issue number5
DOIs
StatePublished - Feb 2 2009

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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