➀ A research team from Tohoku University has achieved a significant breakthrough in carbon nanotube synthesis by developing a unique catalyst. This breakthrough addresses a challenge that has remained unresolved for over 30 years, paving the way for novel semiconductor devices. ➁ The catalyst, composed of nickel, tin, and iron, allows for the selective synthesis of carbon nanotubes with a (6,5) chirality, a property that has been difficult to control in the past. ➂ The team hopes these findings will lead to significant advancements in semiconductor device production and applications.