Andre Heim, a professor at the University of Manchester in the United Kingdom, recently made a new type of gas-permeable material using graphene oxide. The magic of this material is that most liquids and gases cannot pass through it, but the water vapor can be unimpeded.
Graphene is a two-dimensional crystal composed of carbon atoms exfoliated from graphite materials. It is only one layer thick of carbon atoms and is currently the thinnest material in the world. Heim and his colleague Konstantin Novoselov made graphene in the world in 2004, and thus jointly won the 2010 Nobel Prize in Physics.
Recently, Heim reported in the American "Science" magazine that his research team processed graphene into graphene oxide to make a thin film with a thickness of only a few hundredths of a hair. But the strength and toughness are very good.
What is particularly amazing is that this film has a special performance of gas and water permeability. In the experiment, most of the gas and liquid encapsulated with this film can not escape, showing good sealing, only water can evaporate as usual.
Rahul Nair, a member of the Heim research team, said that they had done an interesting experiment, using this film to seal a bottle of vodka. As the water evaporated, the taste of the wine became stronger and stronger.
Nair said that the unique gas and water permeability properties are destined to have a broad application prospect for this new material.
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