Electrolytic actuators: alternative, high-performance, material-based devices.
The emerging field of materials-based actuation continues to be the focus of considerable research because of its inherent scalability and its promise to drive micromechanical devices that cannot be realized with conventional mechanical actuator strategies. The electrolytic phase transformation actuator offers a new broad-spectrum solution to the problem of direct conversion of electrical to mechanical energy. Strains of 136,000% and unoptimized work cycle efficiencies near 50% are demonstrated in a prototype device. Conceivably capable of generating stress beyond 200 MPa, this new approach promises performance orders of magnitude beyond other novel actuation strategies.
Cameron
Colin G
CG
Molecular Materials Research Center, Beckman Institute M/C 139-74, California Institute of Technology, Pasadena, CA 91125, USA.
Freund
Michael S
MS