Nanoelectromechanical Sensors (NEMS) based on Graphene Membranes appear in Nano Letters
Research results of a collaboration between the SINANO members KTH Royal Institute of Technology (Sweden), University of Siegen (Germany) and the University of Udine (Italy) have been published in Nano Letters.
The paper ” Electromechanical Piezoresistive Sensing in Suspended Graphene Membranes“ describes experiments with graphene membrane based pressure sensors with very high normalized sensitivity. In addition, we report an intrinsic graphene gauge factor of 2.9. The observed piezoresistive effect is independent of crystallographic orientation, in line with theoretical calculations. This is an important result in view of potential applications in sensors and actuators and promises significantly smaller sensors with improved sensitivity. The research was supported through three ERC Grants (OSIRIS, No. 228229, M&M’s, No. 277879 and InteGraDe, No. 307311) as well as the German Research Foundation (DFG, LE 2440/1-1) and the Italian MIUR through the Cooperlink project (CII11AVUBF). A.D. Smith, F. Niklaus, A. Paussa, S. Vaziri, A.C. Fischer, M. Sterner, F. Forsberg, A. Delin, D. Esseni, P. Palestri, M. Östling, M.C. Lemme, „Electromechanical Piezoresistive Sensing in Suspended Graphene Membranes“, Nano Letters, 2013. DOI: 10.1021/nl401352k
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