Graphene sandwich squares away ice
![An image of square ice cubes](http://images.iop.org/objects/phw/news/thumb/19/3/24/PW-2015-03-31-Dune-square.jpg)
Sandwiching water between two sheets of the wonder-material graphene causes it to freeze at room temperature in the form of 2D square crystals of ice, rather than its normal hexagonal crystal lattice, according to a team of researchers from the UK, Germany and China. This phase of ice could exist withi
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