Photograph for a BN aerogel of 1.8 cm<sup>3</sup> on human hair with a mass density of 0.6 mg/cm<sup>3</sup>
Yangxi Song, Bin Li, Siwei Yang, Guqiao Ding, Changrui Zhang &amp; Xiaoming Xie
CC BY 4.0
<a rel="nofollow" class="external free" href="http://www.nature.com/articles/srep10337">http://www.nature.com/articles/srep10337</a>