Science

he team would squirt polyacrylonitrile and Jeffamine polymers in molten form through an electrical current in a technique known as “electrospinning.” The high voltage caused molecular changes in the polymers that saw them become solid again, resembling a scaffold of tiny fibers that attracted water yet maintained mechanical strength.

Pity they didn't explain what those materials even are. I wikipedia doesn't do a good job of explaining it as it looks copy pasted out of a chemistry book.

Still, 3D scaffold used to grow retina cells sounds pretty cool.