From Engadget…
Good news for goths — black somehow just got even blacker. MIT engineers have cooked up a material that’s 10 times blacker than anything else previously reported. Capturing more than 99.96 percent of any incoming light, the material is made of vertically aligned carbon nanotubes (CNTs) grown on chlorine-etched aluminium foil. And it was discovered by accident.
Engadget. Link above.