30 Apr '13, 8pm

Scientists Learn to Control the Twist of Carbon Nanotubes

Scientists Learn to Control the Twist of Carbon Nanotubes

Graphene has been holding the spotlight for so long in nanomaterial research now that we are beginning to forget that carbon nanotubes were once the rock star of nanomaterials for a post-silicon world. Now researchers at Aalto University in Finland, the A.M. Prokhorov General Physics Institute RAS in Russia and the Technical University of Denmark (DTU) have put single-walled carbon nanotubes (SWNTs) back center stage by devising a method to control their chirality in a chemical vapor deposition (CVD) growth process. Since the chirality of carbon nanotubes (CNTs)—the angle its 2-D carbon lattice makes around its circumference—defines both their optical and electrical properties, gaining more control over it addresses an issue of primary concern in their practical application to electronics. Along with the promise of CNTs—especially SWNTs—have come some pretty big obstacles....

Full article: http://spectrum.ieee.org/nanoclast/semiconductors/nanotec...

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