Print Email Facebook Twitter High-frequency stochastic switching of graphene resonators near room temperature Title High-frequency stochastic switching of graphene resonators near room temperature Author Dolleman, R.J. (TU Delft QN/Steeneken Lab; Kavli institute of nanoscience Delft) Belardinelli, P. (TU Delft Dynamics of Micro and Nano Systems) Houri, S. (TU Delft QN/van der Zant Lab; Kavli institute of nanoscience Delft) van der Zant, H.S.J. (TU Delft QN/van der Zant Lab; Kavli institute of nanoscience Delft) Alijani, F. (TU Delft Dynamics of Micro and Nano Systems) Steeneken, P.G. (TU Delft Dynamics of Micro and Nano Systems; TU Delft QN/Steeneken Lab; Kavli institute of nanoscience Delft) Date 2019 Abstract Stochastic switching between the two bistable states of a strongly driven mechanical resonator enables detection of weak signals based on probability distributions, in a manner that mimics biological systems. However, conventional silicon resonators at the microscale require a large amount of fluctuation power to achieve a switching rate in the order of a few hertz. Here, we employ graphene membrane resonators of atomic thickness to achieve a stochastic switching rate of 4.1 kHz, which is 100 times faster than current state-of-the-art. The (effective) temperature of the fluctuations is approximately 400 K, which is 3000 times lower than the state-of-the-art. This shows that these membranes are potentially useful to transduce weak signals in the audible frequency domain. Furthermore, we perform numerical simulations to understand the transition dynamics of the resonator and use analytical expressions to investigate the relevant scaling parameters that allow high-frequency, low-temperature stochastic switching to be achieved in mechanical resonators. Subject 2D materialsgrapheneNEMSnonlinear dynamicsStochastic switching To reference this document use: http://resolver.tudelft.nl/uuid:8cea3020-1121-4b8c-b956-4a7fe148f4a1 DOI https://doi.org/10.1021/acs.nanolett.8b04862 ISSN 1530-6984 Source Nano Letters: a journal dedicated to nanoscience and nanotechnology, 19 (2), 1282-1288 Part of collection Institutional Repository Document type journal article Rights © 2019 R.J. Dolleman, P. Belardinelli, S. Houri, H.S.J. van der Zant, F. Alijani, P.G. Steeneken Files PDF acs.nanolett.8b04862.pdf 2.98 MB Close viewer /islandora/object/uuid:8cea3020-1121-4b8c-b956-4a7fe148f4a1/datastream/OBJ/view