Performance of monolayer graphene nanomechanical resonators with electrical readout.

By Changyao Chen, S. Rosenblatt, K. Bolotin, William B. Kalb, Philip Kim, Ioannis Kymissis, Horst L. Stormer, T. Heinz, James C. Hone. Nature Nanotechnology, 2009

959 citations recorded by the source corpus.

The enormous stiffness and low density of graphene make it an ideal material for nanoelectromechanical applications. Here, we demonstrate the fabrication and electrical readout of monolayer graphene resonators, and test their response to changes in mass and temperature. The devices show resonances in the megahertz range, and the strong dependence of resonant frequency on applied gate voltage can be fitted to a membrane model to yield the mass density and built-in strain of the graphene. Following the removal and addition of mass, changes in both density and strain are observed, indicating that adsorbates impart tension to the graphene. On cooling, the frequency increases, and the shift rate can be used to measure the unusual negative thermal expansion coefficient of graphene. The quality factor increases with decreasing temperature, reaching approximately 1 x 10(4) at 5 K. By establishing many of the basic attributes of monolayer graphene resonators, the groundwork for applications of these devices, including high-sensitivity mass detectors, is put in place.

Subfields: Atomic and Molecular Physics, and Optics, Materials Chemistry

View Paper: https://www.semanticscholar.org/paper/10f81584141cf90130701e3c358dd7467286988a

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Citations in the corpus

Mechanics of freely‐suspended ultrathin layered materials (2014, methodology): “hene flake covers the holes forming ‘micro-drumheads’. Figure 2b shows high-angle SEM images of freely-suspended monolayer graphene devices fabricated by etching the substrate underneath the graphene [8, 69]. Note that when a wet etching process is employed to remove the substrate, special care has ”
Dissipation in nanoelectromechanical systems (2014, background): “[79], it is writtenQ−1 ∝ T 3; this is probably a typo, as the data fitsQ−1 ∝ T 2 verywell.”
Mechanical systems in the quantum regime (2011, methodology): “Nowadays the technique has been employed by many groups, not only restricted to carbon nanotubes [76,78,126,82,83,85], but also applied to suspended graphene sheets [103,104], free-hanging semiconducting nanowires [94,96] and charge-density-wave sheets [105].”