20.500.12556/DKUM-96221 Deformation behaviour of optimised three-dimensional axisymmetric chiral auxetic structures Background/Objectives: Developing functional tissue constructs via 3D bioprinting relies heavily on scaffold architecture, demanding precise mechanical tunability and highresolution feature fidelity. Methods: This paper presents a novel approach utilising photocurable resins and resin 3D printing to fabricate auxetic axisymmetric chiral structures (ACSs), which can be used for advanced scaffold engineering. Results: The experimental tests showed that the optimised ACS (optACS) possess superior mechanical properties compared to their non-optimised counterpart. Both analysed structures possess an auxetic behaviour up to 40% longitudinal strain, with a Poisson’s ratio of about −0.1. Conclusions: This auxetic capability is promising for biomedical applications, particularly in developing enhanced stents or tissue scaffolds. auxetic axisymmetric chiral structures 3D printing mechanical testing deformation behaviour optimisation avksetične strukture osno simetrične kiralne strukture 3D tiskanje mehansko testiranje obnašanje materiala pri deformacijah optimizacija true false true MDPI Angleški jezik Slovenski jezik https://www.mdpi.com/2227-9059/13/11/2816 Članek v reviji 2025-12-10 14:20:28 2025-12-10 14:20:29 2025-12-11 03:08:18 0000-00-00 00:00:00 2025 0 0 10 str. iss. 11, [article no.] 2816 Vol. 13 Nov. 2025 0000-00-00 Zaloznikova Objavljeno NiDoloceno 2025-10-27 2025-11-17 2025-11-18 539.2 260741891 10.3390/biomedicines13112816 2227-9059 biomedicines-13-02816-v2.pdf biomedicines-13-02816-v2.pdf 1 9C79BBF9B73BAA024B71EE99B02F7DF7 7376fb73548f88cc2fa503bb408810992fbe66abb07d96d54f48ed97506615b7 83dba9d9-d5ce-11f0-ae72-00155d000105 https://dk.um.si/Dokument.php?lang=slv&id=201321 https://www.mdpi.com/2227-9059/13/11/2816 0 8b005b52-d5ce-11f0-ae72-00155d000105 https://dk.um.si/Dokument.php?lang=slv&id=201322 Fakulteta za strojništvo 0 0 0