A piece of CNF aerogel with a volume of 5.3 cm3 can stand
stably on top of a dandelion without deforming it (Fig. 2a). The CNF
aerogel porosity is estimated to be.99% based on calculations using
the apparent density of ca. 10 mg cm23 for CNF aerogel and a density
of 1.95–2.17 g cm23 for CNF44.