In a next step, the team at ETH wants to create a propulsion system that can do a million revolutions per minute. This is not easily done. In order to achieve this goal the scientists will need special materials that can take the strain in the rotor. The current model is coated with titanium, which resists the extreme centrifugal forces.
These ultra small gas turbines could replace conventional batteries as a mobile power source and have a range of potential applications, from dentistry where ever smaller holes could be drilled with ever higher rotation speed through to energy supply for mobile applications, such as portable heart-lung machines or artificial hearts. The little motors could also be used in turbo compressors, which condense gas mixtures or air."