Get 50% off your first month of KiwiCo. Use code STEVEMOULD at https://kiwico.com/stevemould This bistable auxetic material gets bigger in all directions when you stretch it. It's also becomes 3 dimensional! The paper by Tian Chen and colleagues is: Bistable auxetic surface structures, ACM Transactions on Graphics (TOG), 40(4), 1-9. (Chen, T., Panetta, J., Schnaubelt, M., & Pauly, M. (2021) https://dl.acm.org/doi/abs/10.1145/3450626.3459940 You can find the cut patterns and other recourses here: https://github.com/UH-AIM/bistable-auxetic-surface-structures Tian is currently working at the Architected Intelligent Matter Laboratory: https://aim.me.uh.edu/ Here's my video about flexible polyhedra: https://youtu.be/JiC6DbBoV4Y Veritasium video about compliant mechanisms: https://www.youtube.com/watch?v=97t7Xj_iBv0 Here's my Discord server: https://discord.gg/B6uNzAgshy You can buy my books here: https://stevemould.com/books You can support me on Patreon and get access to the exclusive Discord: https://www.patreon.com/stevemould just like these amazing people: Alex Hackman Glenn Sugden Tj Steyn Pavel Dubov Lizzy and Jack Jeremy Cole Brendan Williams Frank Hereford Lukas Biewald Damien Szerszinski Marshall Fitzpatrick Heather Liu Grant Hay John Zelinka Paul Warelis Matthew Cocke Nathan Blubaugh Twitter: http://twitter.com/moulds Instagram: https://www.instagram.com/stevemouldscience/ Facebook: https://www.facebook.com/stevemouldscience/ Buy nerdy maths things: http://mathsgear.co.uk