Optomechanics for thermal characterization of suspended graphene

Thermal properties of suspended single-layer graphene membranes are investigated by characterization of their mechanical motion in response to a high-frequency modulated laser. A characteristic delay time \(\tau\) between the optical intensity and mechanical motion is observed, which is attributed t...

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Bibliographic Details
Published inarXiv.org
Main Authors Dolleman, Robin J, Houri, Samer, Davidovikj, Dejan, Cartamil-Bueno, Santiago J, Blanter, Yaroslav M, Herre S J van der Zant, Steeneken, Peter G
Format Paper Journal Article
LanguageEnglish
Published Ithaca Cornell University Library, arXiv.org 22.02.2017
Subjects
Delay time
Graphene
Mechanical properties
Membranes
Opto-mechanics
Physics - Mesoscale and Nanoscale Physics
Product design
Thermal conductivity
Thermal resistance
Thermodynamic properties
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Summary:Thermal properties of suspended single-layer graphene membranes are investigated by characterization of their mechanical motion in response to a high-frequency modulated laser. A characteristic delay time \(\tau\) 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 tau, 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.
ISSN:2331-8422
DOI:10.48550/arxiv.1702.06730