dimanche 9 septembre 2012

Substances extrêmes

Source : Top 10 most extreme substances

Aussi :

  • Aerogel holds 15 entries in the Guinness Book of Records, more than any other material. Sometimes called “frozen smoke”, aerogel is made by the supercritical drying of liquid gels of alumina, chromia, tin oxide, or carbon. It’s 99.8% empty space, which makes it look semi-transparent. Aerogel is a fantastic insulator — if you had a shield of aerogel, you could easily defend yourself from a flamethrower. It stops cold, it stops heat. You could build a warm dome on the Moon. Aerogels have unbelievable surface area in their internal fractal structures — cubes of aerogel just an inch on a side may have an internal surface area equivalent to a football field. Despite its low density, aerogel has been looked into as a component of military armor because of its insulating properties.

  • L'Aérographite est encore plus léger (six fois plus léger que l'air). Extremetech donne pléthore de chiffres. On pense l'utilisation pour du wearable computing (lire 2015-2025, the coming wearcomp decade. Et comme il est superhydrophobe, je le verrais comme un bon candidat pour le Nokia Morph.
  • Et toute la page Futuristic materials (dont vient le texte ci-dessus sur les aérogels

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