Graphene has since its isolation and characterization in 2004 seen a dramatic development. Mostly, the interest have been focused around the electronic properties of the material. The mechanical properties are, however, equally outstanding. With its ultra-low mass, large stiffness and elastic behavior, it is the ultimate material for use in two dimensional nanoelectromechanical systems (NEMS). Since 2006, the already expanding field of NEMS, has seen a near exponential increase in the interest in graphene NEMS.
While the potential of graphene lies in the unique material properties, the same properties has also lead to a series of unexplained experimental results, differing markedly from results valid for other NEMS/MEMS system. Among these are foremost the behavior of the strong nonlinear properties, dissipation and noise. As graphene is a truly nano-scale NEMS system, it is to expect that dynamic processes at this scale, such as electron transport, local defects, ripples, etc., can greatly affect system properties.
The purpose of this project is to find and understand the underlying microscopic mechanisms responsible, and to use the knowledge to assess the potential for exploiting them in the field of quantum NEMS. Quantum NEMS deal with nanomechanical systems where mechanical motion must be treated within the framework of quantum mechanics. Quantum NEMS is a rapidly emerging interdisciplinary field linking NEMS, quantum optics and quantum computing.
Andreas Isacsson - project manager