I’ve just been catching up on my New Scientist reading and came across this interesting article on a new material – nanocrystalline cellulose. http://www.newscientist.com/article/mg21528786.100-why-wood-pulp-is-worlds-new-wonder-material.html
According to the story it is transparent, electrically conductive and has 8 times the tensile strength of stainless steel. And being derived from wood pulp it can be produced cheaply and sustainably. Some early uses for it include the production of lightweight body armour and ballistic glass, while its electronic properties are also being explored.