Nonlinearities, Dissipation and Noise in graphene nanoresonators

Research Project, 2012 – 2015

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.

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Project Web Page at Chalmers

http://www.chalmers.se/sv/projekt/Sidor/Ic...

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