Bendy batteries made with nanotube paper could power flexible electronic displays. Researchers at in Troy, New York, grew carbon nanotubes on silicon and coated them in dissolved cellulose. Later they peeled off the silicon, creating a piece of paper with nanotubes on one side to act as an electrode, and used the paper to make lithium-ion batteries that work even when bent.
If you’re bored with breaststroke try the , a carbon-fibre “tail” inspired by seals and dolphins. Strapped to a swimmer’s shins, it helps them maintain a speed of about 4 kilometres per hour. Its inventors at the US Defense Advanced Research Projects Agency reckon the super-flipper,…
