Thermal conductivity of two-dimensional group IV-element thermocrystals. (December 2021)

• Record Type: Journal Article
• Authors: Xu, Kaiyuan; Umar, Azka; Jiang, Chun
• Is Part Of: Case studies in thermal engineering. Volume 28(2021)
• Publication Date: 2021-12
• Subjects: Heat engineering -- Case studies -- Periodicals; 621.40205
• DOI: 10.1016/j.csite.2021.101626
• Languages: English
• ISSNs: 2214-157X

Abstract

Abstract: A thermocrystal is a type of periodic structure bandgap material that can control heat flux transmission and reflection. In this paper, we use and improve a model based on the kinetic theory of transport processes to calculate the corresponding thermal spectra, dispersion relations and thermal transmission losses of two-dimensional thermocrystals with different film thicknesses, different lattice parameters, different modes, and linear defect structure. The results show that the thermal conduction can be reduced by approximately 19.6% using bandgap materials.