Developing Carbon Nanotube Transistors

carbon_nanotubesx519Since the development of the transistor in 1947, the semiconductor industry has been working to rapidly and continuously improve performance and processing speeds of computer chips. Following Gordon Moore’s iconic law—stating that transistor density would double every two years—the semiconducting silicon chip has propelled technology through a wave of electronic transformation.

Next Electronics Revolution

But all good things must come to an end. The process of packing silicon transistors onto computer chips is reaching its physical limits. However, IBM researchers state that they’ve made a “major engineering breakthrough” that provides a viable alternative to silicon transistors.

The team from IBM proposes using carbon nanotube transistors as an alternative, which have promising electrical and thermal properties. In theory, carbon nanotube transistors could be much faster and more energy efficient than currently used transistors. Nanotube transistors have never been utilized in the past due to major manufacturing challenges that prevented their wide-spread commercialization. However, the IBM researchers are combating this issue by combining the nanotubes with metal contacts to deliver the electrical current.