Actuators Artificial Muscles

An actuator is a device that can provide motion. In a carbon nanotube actuator, electrical energy is converted to mechanical energy causing the nanotubes to move.

Here is how it works. Two pieces of paper made from carbon nan-otubes are placed on either sides of a piece of tape that is attached to an

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Hydrogen (Atomic Number 1) is the lightest element. It is by far the most abundant element in the universe and makes up about 90 percent of the universe by weight. Hydrogen as water (H2O) is absolutely essential to life and it is present in all organic compounds.

electrode. An electrode is a conductor through which electric current is passed.

When electric current is applied the electrons are pumped into one piece of the paper. The nanotubes on that side of the paper expand causing the tape to curl in one direction. This curling movement is similar to the way an artificial muscle works. The nanotube actuator can produce 50 to 100 times the force of a human muscle the same size. Researchers see the possible applications of the nanotube actuator for robotics and prosthetics.

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