Movie S2.

Shape memory muscle of different thickness exhibiting different time to activation.

Harnessing bistability for directional propulsion of soft, untethered robots

Tian Chen, Osama R. Bilal, Kristina Shea, and Chiara Daraio

PNAS. 2018. 115:5698-5702 DOI: 10.1073/pnas.1800386115