Double Helix Twisted and Coiled Soft Actuator from Spandex and Nylon

This paper introduces a fabrication method and properties of newly developed Twisted and Coiled soft Actuator (TCA) from nylon and spandex. The TCA, a thermally driven actuator, is one of the promising soft actuators that shows considerable strain compared to the others. Typically, TCA is fabricated from single polymer fiber such as the spandex and nylon. However, TCA from each material shows some limits. The spandex TCA (STCA) shows...