MIT researchers have revived a rejected three-sided zip design first proposed four decades ago, creating a fastener that can turn flexible strips into strong structures for possible use in spacecraft, robotics, tents and medical supports<\/p>\n
A forgotten zip design from 40 years ago could one day help transform space exploration after MIT researchers brought the abandoned concept to life.<\/p>\n
Researchers say their new three-sided fastener could help spacecraft grab rock samples, while also opening up possible uses in tents, robots and medical supports back on Earth.<\/p>\n
The design, known as the \u2018Y-zipper\u2019, allows flexible strips to lock into a load-bearing form in seconds.<\/p>\n
Unlike an ordinary zip, which fastens two sides together, the Y-zipper locks three separate strips into a triangular structure that can support weight and hold together under pressure.<\/p>\n
The concept was first put forward 40 years ago by William Freeman, now an MIT professor, who patented the design and stored the prototype in his garage after the original proposal was rejected.<\/p>\n
Experts have now\u00a0revived the Y-zipper using 3D printing and digital design tools<\/a>, turning the old concept into a working device that can be opened and closed by hand or using motorised actuation.<\/p>\n According to MIT, the design has already been used in prototypes including tent frames that can be packed flat and zipped into place, a wrist support that can be loosened during the day and tightened at night, a quadruped robot with adjustable leg height, and a kinetic flower installation that \u201cbloomed\u201d as the structure closed.<\/p>\n In one test, a tent that would normally take up to six minutes to pitch alone could be put up in 1 minute 20 seconds using the Y-zipper.<\/p>\n But researchers say the device \u2013 which withstood 18,000 cycles of opening and closing in tests before finally snapping \u2013 could also be used in space.<\/p>\n Its three separate sides could act like \u201ctentacles\u201d, reaching around an object before closing together.<\/p>\n Once zipped, those three sides would lock into a stronger form that could help grip, support or secure nearby rock samples.<\/p>\n MIT researcher Jiaji Li said: \u201cA regular zipper is great for closing up flat objects, like a jacket, but Freeman ideated something more dynamic. Using current fabrication technology, his mechanism can transform more complex items.<\/p>\n \u201cWe\u2019ve developed a process that builds objects you can rapidly shift from flexible to rigid, and you can be confident they\u2019ll work in the real world.\u201d<\/p>\n The work was published in the proceedings of the\u00a02026 CHI Conference on Human Factors in Computing Systems<\/a>\u00a0in a paper by Jiaji Li, Xiang Chang, Mingming Li, Dingning Cao, Maxine Perroni-Scharf, Jeremy Mrzyglocki, Takumi Yamamoto, William Freeman and Stefanie Mueller.<\/p>\n