Groups of those meshes are formed into a 3D shape, then seeded with cell cultures, which grow to fill in the lattice to create the final system.

ENGADGET: Harvard scientists grow human cells onto nanowire scaffold to form 'cyborg' skin

And many electric utilities have facilities that create hydrogen power, but consumers can't just pull in with a fuel-cell vehicle and say, "Fill 'er up!"

FORBES: Fueling Hope