Scientists have turned wood into an electrical conductor by making its surface graphene.
Chemist James Tour of Rice University and his colleagues used a laser to blacken a thin film pattern onto a block of pine. The pattern is laser-induced graphene (LIG), a form of the atom-thin carbon material discovered at Rice in 2014.
“It’s a union of the archaic with the newest nanomaterial into a single composite structure,” Tour says.
Previous iterations of LIG were made by heating the surface of a sheet of polyimide, an inexpensive plastic, with a laser. Rather than a flat sheet of hexagonal carbon atoms, LIG is a foam of graphene sheets with one edge attached to the underlying surface and chemically active edges exposed to the air.
Not just any polyimide would produce LIG, and some woods work better than others, Tour says. The research team tried birch and oak, but found that pine’s cross-linked lignocellulose structure made it better for the production of high-quality graphene than woods with a lower lignin content. Lignin is the complex organic polymer that forms rigid cell walls in wood.



When will cars powered by gas-guzzling internal combustion engines become obsolete? Not as soon as it seems, even with the latest automotive news out of Europe.
Emergency: You need more
Scientists have created a single catalyst that could simplify the process of splitting water into hydrogen and oxygen to produce clean energy.
After months of hard work, ECS has launched an online membership wizard. Individuals who are interested in joining ECS as a student or as a member for one, two, three or five years are now able to complete their application online and have access to their ECS My Account.
The journal impact factors (JIFs) for 2016 have been released, and ECS is pleased to announce that the JIFs for the 
Scientists have found that a common enzyme can speed up—by 500 times—the rate-limiting part of the chemical reaction that helps the Earth lock away, or sequester, carbon dioxide in the ocean.