Print Email Facebook Twitter Optomechanics for thermal characterization of suspended graphene Title Optomechanics for thermal characterization of suspended graphene Author Dolleman, R.J. (TU Delft QN/Steeneken Lab; Kavli institute of nanoscience Delft) Houri, S. (TU Delft QN/van der Zant Lab; Kavli institute of nanoscience Delft) Davidovikj, D. (TU Delft QN/Steeneken Lab; Kavli institute of nanoscience Delft) Cartamil Bueno, S.J. (TU Delft QN/Steeneken Lab; Kavli institute of nanoscience Delft) Blanter, Y.M. (TU Delft QN/Blanter Group; Kavli institute of nanoscience Delft) van der Zant, H.S.J. (TU Delft QN/van der Zant Lab; Kavli institute of nanoscience Delft) Steeneken, P.G. (TU Delft Dynamics of Micro and Nano Systems; TU Delft QN/Steeneken Lab; Kavli institute of nanoscience Delft) Date 2017 Abstract The thermal response of graphene is expected to be extremely fast due to its low heat capacity and high thermal conductivity. In this work, the thermal response of suspended single-layer graphene membranes is investigated by characterization of their mechanical motion in response to a high-frequency modulated laser. A characteristic delay time τ between the optical intensity and mechanical motion is observed, which is attributed to the time required to raise the temperature of the membrane. We find, however, that the measured time constants are significantly larger than the predicted ones based on values of the specific heat and thermal conductivity. In order to explain the discrepancy between measured and modeled τ, a model is proposed that takes a thermal boundary resistance at the edge of the graphene drum into account. The measurements provide a noninvasive way to characterize thermal properties of suspended atomically thin membranes, providing information that can be hard to obtain by other means. To reference this document use: http://resolver.tudelft.nl/uuid:4a4bebc1-adeb-4a51-b468-2193b425f78b DOI https://doi.org/10.1103/PhysRevB.96.165421 ISSN 1098-0121 Source Physical Review B (Condensed Matter and Materials Physics), 96 (16) Part of collection Institutional Repository Document type journal article Rights © 2017 R.J. Dolleman, S. Houri, D. Davidovikj, S.J. Cartamil Bueno, Y.M. Blanter, H.S.J. van der Zant, P.G. Steeneken Files PDF PhysRevB.96.165421.pdf 657.21 KB Close viewer /islandora/object/uuid:4a4bebc1-adeb-4a51-b468-2193b425f78b/datastream/OBJ/view