Figure 1From: High performance electrochemical and electrothermal artificial muscles from twist-spun carbon nanotube yarn MWNT sheets and yarn structures for torsional and tensile actuation. SEM images of (a) a CNT sheet being drawn from a CNT forest (which is on the left in this image), (b) Fermat-type twist insertion during spinning a yarn from a CNT forest, (c) a single-ply, twisted, non-coiled CNT yarn, and (d) a single-ply, coiled yarn [2].Back to article page