High power density dual-rotor device

A torsional motor, comprising:

• a plurality of segments;
• wherein each segment comprises an electroactive material having a poling along the length dimension of the segment;
• wherein the segments are arranged in the shape of a tube, the length dimensions of the segments are aligned with the length dimension of the tube, and adjacent segments are arranged such that their respective polings are in opposed directions;
• a plurality of conductors;
• wherein the conductors are disposed between the adjacent segments;
• a first set of one-way clutches comprising a first one-way clutch and a second one-way clutch;
• wherein the first one-way clutch is at a first position on the tube;
• wherein the second one-way clutch is at a second position on the tube;
• a first rotor;
• wherein the first one-way clutch transmits angular displacement at the first position of the tube in one direction to the first rotor;
• and
• a second rotor;
• wherein the second one-way clutch transmits angular displacement at the second position of the tube in one direction to the second rotor;
• whereby rotation of the first rotor and the second rotor occurs during application of opposite-polarity alternating electric fields across adjacent segments.