On the emergence of heat waves in the transient thermal grating geometry

Zhang, Chuang1; Huberman, Samuel2; Wu, Lei1

2022-08-28

10.1063/5.0102227

JOURNAL OF APPLIED PHYSICS   影响因子和分区

0021-8979

1089-7550

The propagation of heat in the transient thermal grating geometry is studied based on phonon Boltzmann transport equation (BTE) in different phonon transport regimes. Our analytical and numerical results show that the phonon dispersion relation and temperature play a significant role in the emergence of heat wave. For the frequency-independent BTE, the heat wave appears as long as the phonon resistive scattering is not sufficient, while for the frequency-dependent BTE, the heat wave could disappear in the ballistic regime, depending on the grating period and temperature. We predict that the heat wave could appear in the suspended graphene and silicon in extremely low temperature but disappear at room temperature. Published under an exclusive license by AIP Publishing.

SCI ; EI

英语

第一 ; 通讯

National Natural Science Foundation of China (NSFC)[12147122] ; China Postdoctoral Science Foundation[2021M701565] ; NSERC Discovery Grants Program[RGPIN-2021-02957]

Physics

Physics, Applied

WOS:000843894100007

AIP Publishing

20223612691487

Ballistics ; Boltzmann equation ; Phonons

Military Engineering:404.1 ; Statistical Methods:922 ; Mechanics:931.1

PHYSICS

Web of Science

1.Southern Univ Sci & Technol, Dept Mech & Aerosp Engn, Shenzhen 518055, Peoples R China
2.McGill Univ, Dept Chem Engn, 845 Sherbrooke St W, Montreal, PQ H3A 0C5, Canada

Zhang, Chuang,Huberman, Samuel,Wu, Lei. On the emergence of heat waves in the transient thermal grating geometry[J]. JOURNAL OF APPLIED PHYSICS,2022,132(8).

Zhang, Chuang,Huberman, Samuel,&Wu, Lei.(2022).On the emergence of heat waves in the transient thermal grating geometry.JOURNAL OF APPLIED PHYSICS,132(8).

Zhang, Chuang,et al."On the emergence of heat waves in the transient thermal grating geometry".JOURNAL OF APPLIED PHYSICS 132.8(2022).