Carbon nanofoam
Carbon nanofoam , an airgel , is a randomly oriented, network-like arrangement of carbon-graphite planes that form pores a few nanometers in size. It is similar to glassy carbon , but its pores are larger (typically> 5 nm) and interlinked.
Carbon nanofoam has a solid physical state . Its density is around 200 kg / m³.
There are indications of materials with a density of 2 kg / m³. That meant that a liter weighs only two grams . Another - for carbon - extremely unusual property is the ferromagnetism of this nanofoam.
The production of nanofoam is only possible in experimental quantities, for this carbon is evaporated by means of a laser in a vacuum chamber . This vapor condenses on a silicon plate, which creates the structure of the nanofoam.
In contrast to carbon nanofoam, carbon airgel consists of a conglomerate of nanoparticles.
Individual evidence
- ↑ Unconventional magnetism in all-carbon nanofoam (PDF file; 297 kB)
- ↑ Attractive carbon foam. On: Wissenschaft.de from March 31, 2004.