Graphene sandwich makes new form of ice

@article{Peplow2015GrapheneSM,
  title={Graphene sandwich makes new form of ice},
  author={Mark Peplow},
  journal={Nature},
  year={2015}
}
  • M. Peplow
  • Published 25 March 2015
  • Physics
  • Nature
Unusual square structure suggests how flattened water can zip through tight channels. 
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A novel approach simulating pressure on square ice clusters
ABSTRACT The recent experimental discovery of square ice under pressure has motivated the present study of some purely planar cluster of N water molecules by quantum chemical methods. As a starting…

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Physical chemistry: Square ice in a graphene sandwich
Films of ice less than 1 nanometre thick, sandwiched between sheets of graphene, have been observed to adopt a square lattice structure quite different from the widely occurring hexagonal structure…
Square ice in graphene nanocapillaries
TLDR
High-resolution electron microscopy imaging of water locked between two graphene sheets is reported, an archetypal example of hydrophobic confinement, and shows that the nanoconfined water at room temperature forms ‘square ice’—a phase having symmetry qualitatively different from the conventional tetrahedral geometry of hydrogen bonding between water molecules.
Precise and Ultrafast Molecular Sieving Through Graphene Oxide Membranes
TLDR
This work investigates permeation through micrometer-thick laminates prepared by means of vacuum filtration of graphene oxide suspensions, which reveal that the GO membrane can attract a high concentration of small ions into the membrane, which may explain the fast ion transport.
Unimpeded Permeation of Water Through Helium-Leak–Tight Graphene-Based Membranes
TLDR
Submicrometer-thick membranes made from graphene oxide can be completely impermeable to liquids, vapors, and gases, including helium, but these membranes allow unimpeded permeation of water (H2O permeates through the membranes at least 1010 times faster than He).