ENERGIES RENOUVELABLES
sol(ID)aires
NOUVELLES de la SANTE par l'ENERGIE
SOLAIRE !
2004
- 2006
- 2010
Sources ADIT, mars (en anglais):
* UT
Dallas nanotechnologists demonstrate artificial muscles powered by highly
energetic fuels (en anglais) et:
* Artificial
muscles (in robots or prosthetic limbs ) that use fuel cells:
Electrically powered motor or actuators can serve
as artificial muscles in robots or prosthetic limbs, but significant "down
times" will likely occur if their power needs are met by rechargeable batteries.
Ebron et al. (p. 1580; see the Perspective by Madden) demonstrate
two alternative approaches that use fuel cells. In one approach, a catalyst
containing carbon nanotubes acts as muscle, fuel cell electrode, and supercapacitor
electrode in a hydrogen-fueled system. In the other approach that can be
fueled by hydrogen, methanol, or formic acid, a shape-memory alloy is used;
this artificial muscle achieves actuator stroke and power density comparable
to that of natural skeletal muscle and generates stresses that are one
hundred times greater.
Science 17 March 2006, Vol. 311. no. 5767, p. 1517
Voir
notre page spéciale cécité