The lightest solid 最輕的固體

The lightest solid ever developed: A piece of graphene aerogel developed in a lab at Zhejiang University is placed on a cherry flower in Hangzhou in east China's Zhejiang province

Delicate: A comparison with this researcher's hand reveals just how puny the flower is - yet it can comfortably hold the weight of the graphene substance balanced on top of it
Lightest material ever made: Graphene aerogel balanced atop petals of a flower | Mail Online http://www.dailymail.co.uk/sciencetech/article-2296223/Lightest-material-Graphene-aerogel-balanced-atop-petals-flower.html

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