By Ben Coxworth January 29, 2021 Scanning electron microscope photos of a straight thread (left) and one that’s bending under strain (right)Yiwen Jiang, Tufts UniversityVIEW 1 IMAGES While there already are body movement-tracking systems, many of them incorporate cumbersome wearable devices, or require the person to move about in front of an array of cameras. A new...
