carbon nanofoam

Unlike carbon aerogels, carbon nanofoam is a poor electrical conductor.

Of the other discovered allotropes, carbon nanofoam is a ferromagnetic allotrope discovered in 1997.

This gives rise to what is perhaps carbon nanofoam's most unusual feature: it is attracted to magnets, and Curie point can itself be made magnetic.

Several other exotic allotropes have also been discovered, such as lonsdaleite, glassy carbon, carbon nanofoam and linear acetylenic carbon (carbyne).

Carbon nanofoam is an allotrope of carbon discovered in 1997 by Andrei V. Rode and co-workers at the Australian National University in Canberra.

The large-scale structure of carbon nanofoam is similar to that of an aerogel, but with 1% of the density of previously produced carbon aerogels - only a few times the density of air at sea level.