Presentation
25 June 2021 3D architected materials as scaffolds for cell growth
Author Affiliations +
Abstract
We present our latest work into the modelling and fabrication of 3D auxetic metamaterials, and their evaluation as scaffolds for cell growth. Auxetic metamaterials are materials that display a negative Poisson’s ratio; when stretched, they become thicker perpendicular to the applied force. Their properties are mainly due to their architecture, rather than their chemical composition. Natural biological tissues display auxetic characteristics in organs such as skin, artery, tendon, and cancellous bone. Auxetic porous materials facilitate mass transport and, therefore, there is potential for optimal flow or delivery of nutrients, metabolic wastes and therapeutic agents. Some of their potential application are as scaffolds for blood vessels, esophageal stents, skin grafts, scaffolds for artificial lungs and cardiac patches. To make these metamaterials scaffolds, we employ 3D multiphoton polymerisation (MPP) of photopolymers. This is a technique which allows the fabrication of 3D microstructures with sub-100 nm resolution. It is based on the phenomenon of multiphoton absorption (MPA). When the beam of an ultrafast laser tightly focused inside the volume of a transparent photopolymer, it can initiate polymerisation via MPA. Moving the beam in a three-dimensional manner will result in the direct writing of 3D structures inside the volume of the photopolymer. The material employed for the fabrication of the 3D metamaterial is a homemade zirconium silicate, known to be biocompatible. Finally, we investigate the suitability of these metamaterials as scaffolds for cell growth.
Conference Presentation
© (2021) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Maria Farsari "3D architected materials as scaffolds for cell growth", Proc. SPIE 11786, Optical Methods for Inspection, Characterization, and Imaging of Biomaterials V, 117861J (25 June 2021); https://doi.org/10.1117/12.2593275
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KEYWORDS
Metamaterials

Photopolymers

Polymerization

Skin

Modeling

Silicates

Therapeutic agents

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