Direct Characterization of Thermal Nonequilibrium between Optical and Acoustic Phonons in Graphene Paper under Photon Excitation

Direct Characterization of Thermal Nonequilibrium between Optical and Acoustic Phonons in Graphene Paper under Photon Excitation

Abstract Raman spectroscopy has been widely used to measure thermophysical properties of 2D materials. The local intense photon heating induces strong thermal nonequilibrium between optical and acoustic phonons. Both first principle calculations and recent indirect Raman measurements prove this phen...

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Bibliographic Details
Main Authors: Hamidreza Zobeiri, Nicholas Hunter, Ridong Wang, Tianyu Wang, Xinwei Wang
Format: Article
Language:English
Published: Wiley 2021-06-01
Series:Advanced Science
Subjects:
graphene paper
optical and acoustic phonons
phonon coupling factor
Raman thermometry
thermal nonequilibrium
Online Access:https://doi.org/10.1002/advs.202004712

Internet

https://doi.org/10.1002/advs.202004712

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