honeycomb auxetic structure
Image: Auxetic Materials, Alderson, A & Alderson, KL, Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering, Volume 221, 2007. Page 567.
Image: Auxetic Materials, Alderson, A & Alderson, KL, Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering, Volume 221, 2007. Page 567.