Figure 1

(a) Schematics of the mechanism of thrust in an ionic propeller-cylindrical counter electrode RIE (top view). (b) Side view of the RIE with cylindrical counter electrode and ionically induced air flow. (c) From left to right: 50ms image sequence of the ionic wind initiation in a RIE with cylindrical collector. A laser sheet was projected within the plane of the propeller rotation to visualize condensed water vapors induced by a liquid nitrogen container/jar placed below the ionic propeller. A Photron SA-X2 high-speed camera was used at 1000 fps.