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Printing Artificial Bone

Researchers develop method to design synthetic materials for 3D printing

MIT News
Tue, 06/18/2013 - 16:39
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Researchers working to design new materials that are durable, lightweight, and environmentally sustainable are increasingly looking to natural composites, such as bone, for inspiration.

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Bone is strong and tough because its two constituent materials, soft collagen protein and stiff hydroxyapatite mineral, are arranged in complex hierarchical patterns that change at every scale of the composite, from the micro up to the macro.

Although researchers have come up with hierarchical structures in the design of new materials, moving from a computer model to the production of physical artifacts has been a persistent challenge. This is because the hierarchical structures that give natural composites their strength are self-assembled through electrochemical reactions, a process not easily replicated in the lab.

Now researchers at MIT have developed an approach that allows them to turn their designs into reality. In just a few hours, they can move directly from a multiscale computer model of a synthetic material to the creation of physical samples.

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