SEM images in a,b show that the aerogels have nanotube structures coated by the nanosheets. TEM images in c,d exhibit the tubular morphologies of the aerogels at a higher magnification. The insets of c,d show representative high definition images of a carbon nanotube and a BN nanotube with arrows indicating their inside and outside diameters, respectively. Scale bars are 5 nm for insets in c,d.
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>