Researchers at Tufts University took inspiration from the world of comic books and nature to create a groundbreaking web-slinging technology.
This innovative system allows a fluid material to be shot from a needle, solidifying into a string that can adhere to and lift objects.Researchers at Tufts University have taken inspiration from the world of comic books and nature to create a groundbreaking web-slinging technology.The material solidifies into a string that can adhere to and lift objects, much like the web-slinging abilities of Spider-Man.
Nature serves as the ultimate source of inspiration for using silk fibers in tethers, webs, and cocoons. Various creatures, including spiders, ants, wasps, bees, butterflies, moths, beetles, and flies, can produce silk at different life stages.for multiple surfaces, edible coatings that prolong the shelf life of food, and light-collecting materials that could enhance solar cell efficiency.
This chance discovery addressed several engineering challenges in mimicking spider silk. The silk fibroin solutions typically form a semi-solid hydrogel over hours when exposed to organic solvents like ethanol or acetone. The next crucial step involved spinning the fibers in the air. Researchers integrated dopamine into the silk fibroin solution, which appeared to accelerate the transition from liquid to solid by removing water from the silk. When the solution is shot through a coaxial needle, a thin silk stream is enveloped by acetone, triggering solidification. that attaches to anything it contacts. By adding chitosan, from insect exoskeletons, the fibers became up to 200 times stronger.
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