A full musculoskeletal kinematics platform using ultra-stretchable liquid metals? Gallium-Indium-Tin is an interesting material for stretchable electronics. It can be formed into a non-toxic RoHS-compliant gel and applied to almost any substrate to form stretchable conductive metallizations and circuits.
It retains its limited liquidity, meaning that it can follow the form of the substrate as the substrate stretchec, provided the limits of its hysteresis are not approached.
In this presentation Jorge Carbo - innovator at Liquid Wire Inc.- shares data showing that they have approached 1M cycles of 100% stretch without any change in resistance- this is some benchmark to beat! In fact, most stretchable inks will struggle to match this performance (although they will likely offer higher conductivity)
Furthermore, Liquid Wire Inc. is developing a full platform based on its material. As can be seen, this platform integrates their stretchable interconnects together with microprocesses, strain gauge sensors, and other rigid ICs, showing that they can form fully-functional deformable silicone based novel sensor systems with embedded electronics
Finally, in this presentation, Jorge Carbo outlines multiple examples of this technology, showing how this 'second skin' forms the basis of a platform technology that can be used in measuring athletic performance, in VR/AR gaming, clinical trials, etc.