Scientists grow carbon nanotube forest much longer than any other

Carbon nanotube (CNT) forests are a solution to scaling up the production of CNTs, which are becoming a staple in many industries. However, even the best catalyst used to grow these forests deteriorates quickly, capping possible forest length at ~2 cm. Now, scientists from Japan have proposed a way to ensure longer catalyst lifetime and higher growth rate, creating a CNT forest that is a record seven times longer than any existing CNT array.