To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video Movie S4. Video showing the extrusion of the fiber hydrogel from a 27-gauge needle (inner diameter = 0.21 mm) and manipulation of the gel showing mechanical strength. Scale has 1-mm increments. Flow-induced gelation of microfiber suspensions Antonio Perazzo, Janine K. Nunes, Stefano Guido, and Howard A. Stone PNAS. 2017. 114:E8557-E8564 DOI: 10.1073/pnas.1710927114 Download Original Video Browse All Videos »