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A new team at Northwestern University has begun printing three-dimensional structures with graphene nanoflakes

The team, led by Assistant Professor of Materials Science and Engineering at the McCormick School of Engineering and Surgery at the Feinberg School of Medicine, Ramille Shah, and her postdoctoral fellow, Adam Jakus, has developed a new kind of graphene ink that can be used to print large 3D structures.

http://3dprintingindustry.com/2015/05/26/3d-printing-neurons-with-graphene-stretching-the-possibilities-at-northwestern-university/