RESEARCHERS from the Physics department of the Sharif Industrial University in Iran have developed the first ever ‘liquid motor.’
The device consists of a thin layer of liquid and an external electrical field. An electrical current running perpendicular to the field is passed through the liquid.
The layer will begin to twist is a whirlpool motion when the voltage of the external field increases. The researchers say the device works with both AC and DC currents.
According to the scientists, the apparatus can be classed as a motor because its start, pause, velocity and direction can all be controlled. They say this is the first time the phenomenon has been observed. 
The physicists claim the technique could be used to mix chemicals and fluids in industrial applications. It also has possible medical and scientific applications.