Physics Mathematics Biology Computer Science Topics Archive Special Issues Podcasts Videos Qualia Essays Multimedia Q&As Explainers About Quanta Search Search for: Search Search Newsletter Get the latest news delivered to your inbox.
Youtube Instagram RSS Newsletter An editorially independent publication supported by the Simons Foundation.
Physics Mathematics Biology Computer Science Topics Archive Saved articles Saved Articles Create a reading list by clicking the Read Later icon next to the articles you wish to save.
Login Log out Change password Search let headerArray = '{"type":"default","solid_primary_color":" text-1a1a1a","solid_secondary_color":" text-999999","solid_hover_color":" text-ff8600","solid_background_color":null,"solid_border_color":null}'; Type search term(s) and press enter
Physics Black Holes Evolution Home How Spiders Spin ‘Silk Dope’ Into Nature’s Toughest Material Comment Save Article Read Later Share Facebook Copied! Copy link Email Pocket Reddit Ycombinator Comment Comments Save Article Read Later Read Later materials science How Spiders Spin ‘Silk Dope’ Into Nature’s Toughest Material By Yasemin Saplakoglu October 28, 2026
Save Article Read Later Add as Preferred Source (opens in a new tab) i Click to tell Google to prioritize Quanta and see more of the best coverage of science and math in your search and AI results.
A marbled orb weaver spider ( Araneus marmoreus ) builds its web one silk stitch at a time.
animals biochemistry biology chemistry insects materials science molecular biology phase transitions proteins All topics A spider, when knocked off a wall, doesn’t fall for long. Within milliseconds, it spins a soup of proteins into sturdy climbing gear. Using a thin, shimmering strand of silk, the spider hauls itself back up.
The strand is tougher than Kevlar, the synthetic fiber in bike tires and bulletproof vests, and stronger than steel. It’s flexible and biocompatible with human bodies. Scientists dream of making spider silk into high-performing materials for seat belts, helmets, naval materials, and even scaffolds to help repair brain cells. But attempts to make spider silk in the lab have fallen short because researchers don’t know enough about how a spider spins “silk dope,” a liquid blend of proteins, water, and salt, from its silk glands into a remarkable solid.
Mapping out the molecular mechanisms behind the process is “really the holy grail” for the field, said Gregory Holland , a chemist and spectroscopist at San Diego State University. Recently, he led research that described how the molecules in liquid spider dope reorganize into semiliquid droplets called condensates before turning into solid silk fiber. The result is an atomic-level look into the spider’s silk factory.
The findings are also a practical guide to the formation of condensates, which nature has used repeatedly to organize molecules for genetic processes and for the creation of impressively strong biological materials.
“It’s becoming clear that [condensates are] a common strategy that’s being used across a range of different organisms,” said Matthew Harrington , a biological materials scientist at McGill University who was not involved in the study. By unpacking how nature uses condensates, scientists hope to re-create some of its most rugged materials.