Jun 05, 2009

Nanotube and Graphene ElectroMechanics

Monday, June 22, 2009, 12:00. ICFO's Auditorium. Adrian Bachtold, leader of the Quantum Nanoelectronics Group at CIN2 (CSIC-ICN) will lecture the Colloquium 'Nanotube and Graphene ElectroMechanics'.

Carbon nanotubes and graphene offer unique scientific and technological opportunities as nanoelectromechanical systems (NEMS). Namely, they have allowed the fabrication of mechanical resonators that can be operable at ultra high frequencies and that can be employed as ultrasensitive sensors of mass or charge. In addition, nanotubes and graphene have exceptional electron transport properties, including ballistic conduction over long distances. Coupling the mechanical motion to electron transport in these remarkable materials is thus highly appealing. In this talk, I will review some of our group's recent results on nanotube and graphene NEMSs, including the development of thermal motors in which the motion depends on the arrangement of the atoms in the nanotube, imaging ultrarapid mechanical oscillations of nanotube and graphene resonators with an atomic force microscope, and the control of the mechanical oscillation using individual electrons tunneling onto and out of the nanotube.