Most materials get thinner when stretched, but “auxetics” do the opposite and get thicker. Helen Gleeson describes her group’s discovery of a material that is auxetic at the molecular level, which could be used in everything from body armour to laminated glass

中文翻译：

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延伸极限

大多数材料在拉伸时会变薄，但“膨胀性”则相反而变厚。海伦·格里森（Helen Gleeson）介绍了她的小组发现的一种在分子水平上具有发胀性的材料，该材料可用于从防弹衣到夹层玻璃的所有领域