Figure 5.

Macroscale structure fabrication with inter-fiber and interfacial bonding in adhesive fibers. (a) Adhesive fibers were twisted into helical structures, hydrated and mechanically agitated to show maintenance of the folded helical structure at (i) low magnification (scale bar is 10 mm) and (ii) high magnification (scale bar is 2 mm). (b) Layered adhesive fibrous networks (shown with 20 layers) laminated into a thick construct, and visualized (i) after hydration and mechanical agitation (scale bar is 3 mm) and (ii) with fluorescence microscopy to examine interlamellar layers (scale bar is 0.5 mm). (c) Luminal structures fabricated with adhesive fibers by wrapping around a needle and visualized (i) during removal from the support needle and (ii) while extruding 70 kDa rhodamine labeled dextran (red) (scale bar is 20 mm). Fibers were illuminated with ultraviolet light to enhance visualization (a (i), and c (i, ii)).