Studying thermal transport in suspended monolayer molybdenum disulfide prepared by a nano-manipulator-assisted transfer method.

07:00 EST 13th February 2020 | BioPortfolio

Summary of "Studying thermal transport in suspended monolayer molybdenum disulfide prepared by a nano-manipulator-assisted transfer method."

The thermal transport of monolayer MoS2, grown by chemical vapor deposition (CVD) method, was studied in this work. A novel approach was developed to transfer monolayer MoS2 onto suspended microelectrothermal system (METS) device, where a nano-manipulator in a scanning electron microscope (SEM) was employed to accomplish the feat. This nano-manipulator-assisted transferring gives a high sample yield with relatively good sample quality compared to the traditional wet/dry transfer methods. Temperature-dependent thermal conductivity of monolayer MoS2 was measured by suspended-pads thermal bridge technique, with thermal conductivity value slightly lower than the exfoliated samples due to the phonon-defects scattering for CVD grown samples. Further extension of the current transfer method was demonstrated on few-layer graphite, where suspended graphite flakes that were free of surface ripples and with high thermal conductance were shown. We provide a simple and convenient approach to fabricate thermal devices of monolayer samples, which aids to rapid thermal property measurement of various emerging 2D materials.


Journal Details

This article was published in the following journal.

Name: Nanotechnology
ISSN: 1361-6528


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