Thermal transport in 2D nanophononic metamaterials embedded with cylindrical arrays

Wei Cao, Jing Shi, Rui Xiong, Ziyu Wang*, Zhengyou Liu

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


The development of nanophononic metamaterials presents new opportunities for controlling thermal conduction. Using the theory of elasticity and the finite element method, we systematically investigated the thermal conductance of two-dimensional nanophononic metamaterials embedded with cylindrical arrays. When the sound speed of the embedded material is higher than matrix, there is a weak correlation between structural parameters and thermal conductance. However, when the nanophononic metamaterials are embedded with lower sound speed materials, they exhibit clear local resonances. The local resonance frequency can move to a higher or lower range depending on the filler radius. Local resonances reduce group velocity but greatly increase the phonon density of states, contributing to an increase in thermal conductance. Furthermore, this conclusion applies to nanophononic metamaterials with different matrix materials.

Original languageEnglish
Article number128997
JournalPhysics Letters, Section A: General, Atomic and Solid State Physics
StatePublished - 5 Sep 2023
Externally publishedYes


  • Finite element method
  • Nanophononic metamaterials
  • Thermal transport


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