Electromechanical properties of suspended Graphene Nanoribbons

Details Electromechanical properties of suspended Graphene Nanoribbons Electromechanical properties of suspended Graphene Nanoribbons

2009-05-05

arxiv.org/abs/0905.0696v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

12 pages, 6 figures

Scientific paper

Graphene nanoribbons present diverse electronic properties ranging from semiconducting to half-metallic, depending on their geometry, dimensions and chemical composition. Here we present a route to control these properties via externally applied mechanical deformations. Using state-of-the-art density functional theory calculations combined with classical elasticity theory considerations, we find a remarkable Young's modulus value of ~7 TPa for ultra-narrow graphene strips and a pronounced electromechanical response towards bending and torsional deformations. Given the current advances in the synthesis of nanoscale graphene derivatives, our predictions can be experimentally verified opening the way to the design and fabrication of miniature electromechanical sensors and devices based on ultra-narrow graphene nanoribbons.

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