2022
DOI: 10.48550/arxiv.2204.06877
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Tension tuning of sound and heat transport in graphene

Abstract: Heat transport by acoustic phonons in 2D materials is fundamentally different from that in 3D crystals [1][2][3][4] because the out-of-plane phonons propagate in a unique way that strongly depends on tension and bending rigidity. Since in-plane and out-of-plane phonon baths are decoupled, initial studies suggested they provide independent pathways for heat transport and storage in 2D materials 5,6 . Here, we induce tension in freestanding graphene membranes by electrostatic force, and use optomechanical techni… Show more

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“…To probe the thermodynamic properties of the fabricated devices, we use a laser interferometer (see methods) [19,20]. As shown in figure 1(d), we place the samples in a vacuum chamber with a pressure below 10 −5 mbar during the measurements.…”
Section: Fabrication and Methodologymentioning
confidence: 99%
“…To probe the thermodynamic properties of the fabricated devices, we use a laser interferometer (see methods) [19,20]. As shown in figure 1(d), we place the samples in a vacuum chamber with a pressure below 10 −5 mbar during the measurements.…”
Section: Fabrication and Methodologymentioning
confidence: 99%