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Graphene ink for 3D-printed objects

Northwestern University in the USA claim an ink that could allow 3D-printed products for electronics and biomedical applications. The key is the concentration of graphene in the ink which they have increased to 60% from the more usual 20%. This is achieved by aligning the graphene flakes through extrusion and the use of a biocompatible, biodegradable and hyperelastic polyester as a binder in the ink makes the 3D-printed products flexible.

The potential biomedical applications include scaffolds in tissue engineering and regenerative medicine as well as biomedical polymers where their stretchiness can be matched to natural materials such as the spine. In addition it could find its way into high performance flexible electronics.

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