Superconducting voice-coil actuator with spiral diaphragm flexures

This not only compromises thermal stability needed in precision applications but can also lead to overheating. This challenge can be addressed by using superconductors in the actuator’s coil to eliminate electrical resistance. This Mikroniek article presents the design of a compact superconducting voice-coil actuator that delivers a high static force of 350 N while generating only 1 mW of heat. The incorporated spiral diaphragm flexures offer a simple and compact solution to guide the linear motion. (Image courtesy of University of Twente and VDL ETG)