Nanomechanical resonators have emerged as sensors with exceptional sensitivities. These sensing capabilities open new possibilities in the studies of the thermodynamic properties in condensed matter. Here, we use mechanical sensing as a novel approach to measure the thermal properties of low-dimensional materials. We measure the temperature dependence of both the thermal conductivity and the specific heat capacity of a transition metal dichalcogenide monolayer down to cryogenic temperature, something that has not been achieved thus far with a single nanoscale object. These measurements show how heat is transported by phonons in two-dimensional systems. Both the thermal conductivity and the specific heat capacity measurements are consistent with predictions based on first-principles.
Optomechanical Measurement of Thermal Transport in Two-Dimensional MoSe2 Lattices / Morell, Nicolas; Tepsic, Slaven; Reserbat-Plantey, Antoine; Cepellotti, Andrea; Manca, Marco; Epstein, Itai; Isacsson, Andreas; Marie, Xavier; Mauri, Francesco; Bachtold, Adrian. - In: NANO LETTERS. - ISSN 1530-6992. - 19:5(2019), pp. 3143-3150. [10.1021/acs.nanolett.9b00560]
Optomechanical Measurement of Thermal Transport in Two-Dimensional MoSe2 Lattices
Mauri, Francesco;
2019
Abstract
Nanomechanical resonators have emerged as sensors with exceptional sensitivities. These sensing capabilities open new possibilities in the studies of the thermodynamic properties in condensed matter. Here, we use mechanical sensing as a novel approach to measure the thermal properties of low-dimensional materials. We measure the temperature dependence of both the thermal conductivity and the specific heat capacity of a transition metal dichalcogenide monolayer down to cryogenic temperature, something that has not been achieved thus far with a single nanoscale object. These measurements show how heat is transported by phonons in two-dimensional systems. Both the thermal conductivity and the specific heat capacity measurements are consistent with predictions based on first-principles.File | Dimensione | Formato | |
---|---|---|---|
Morell_Optomechanical Measurement_2019.pdf
accesso aperto
Tipologia:
Versione editoriale (versione pubblicata con il layout dell'editore)
Licenza:
Tutti i diritti riservati (All rights reserved)
Dimensione
2.04 MB
Formato
Adobe PDF
|
2.04 MB | Adobe PDF |
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.