Nanoscale carbon nanotube motor schematics and simulations for micro-electro-mechanical machines

We investigated nanoscale engine schematics composed of a carbon nanotube oscillator, motor, channel, nozzle, etc. For the fluidic gas driven carbon nanotube motor, the origination of the torque was the friction between the carbon nanotube surface and the fluidic gases. The density and flow rate of the working gas or liquid are very important for the carbon nanotube motor. When multi-wall carbon nanotubes with very low rotating energy barriers are used for carbon nanotube motors, the fluidic gas driven carbon nanotube motors can be effectively operated and controlled by the gas flow rates. The variations of the flux were the same as the variations of the carbon nanotube oscillator. Although the carbon nanotube oscillator continually vibrated, since the angular velocity of the motor was saturated at a constant value, the speed of the nanoscale engine could be controlled by the frequency of the carbon nanotube oscillator below the maximum speed.