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Langmuir Films of Amphiphilic Alcohols and Surfaces of Polar Crystals as Templates for ice Nucleation

  • R. Popovitz-Biro
  • J. Majewski
  • J. L. Wang
  • K. Kjaer
  • J. Als-Nielsen
  • M. Lahav
  • L. Leiserowitz
Chapter
Part of the NATO ASI Series book series (ASIC, volume 426)

Abstract

Two approaches are used to study suggested mechanisms for heterogeneous ice nucleation. In one, an epitaxial-like mechanism is studied by using Langmuir monolayers of aliphatic alcohols C n H 2n +1OH (n=16 to 31) spread on supercooled water drops. The packing arrangement of several of these uncompressed.monolayers on water, have been determined by grazing incidence x-ray diffraction (GID) and correlated with the structure of water molecules at the (001) face of hexagonal ice. The roles played by lattice match between the monolayers and ice, the coherence length of the amphiphile crystallites and the orientation of the hydroxyl groups at the interface in determining the nucleation efficiencies are specifically addressed. In another induced nucleation of ice by an electric field is studied using hydrophobic surfaces of chiral resolved and racemic α-amino acid crystals onto which water vapor has been condensed and nucleated into ice.

Keywords

Aliphatic Alcohol Lattice Match Langmuir Monolayer Polar Crystal Chiral Crystal 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science+Business Media Dordrecht 1994

Authors and Affiliations

  • R. Popovitz-Biro
    • 1
  • J. Majewski
    • 1
  • J. L. Wang
    • 1
  • K. Kjaer
    • 2
  • J. Als-Nielsen
    • 2
  • M. Lahav
    • 1
  • L. Leiserowitz
    • 1
  1. 1.The Department of Materials and InterfacesThe Weizmann Institute of ScienceRehovotIsrael
  2. 2.Department of PhysicsRisø National LaboratoryRoskildeDenmark

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