中国物理B ›› 2024, Vol. 33 ›› Issue (4): 47401-047401.doi: 10.1088/1674-1056/ad1501

所属专题: SPECIAL TOPIC — Heat conduction and its related interdisciplinary areas

• • 上一篇    下一篇

Phonon resonance modulation in weak van der Waals heterostructures: Controlling thermal transport in graphene—silicon nanoparticle systems

Yi Li(李毅), Yinong Liu(刘一浓), and Shiqian Hu(胡世谦)   

  1. School of Physics and Astronomy, Yunnan University, Kunming 650091, China
  • 收稿日期:2023-11-19 修回日期:2023-12-03 接受日期:2023-12-13 出版日期:2024-03-19 发布日期:2024-03-19
  • 通讯作者: Shiqian Hu E-mail:shiqian@ynu.edu.cn
  • 基金资助:
    This research was funded in parts by the National Natural Science Foundation of China (Grant No. 12105242) and Yunnan Fundamental Research Project (Grant Nos. 202201AT070161 and 202301AW070006). Y. Li, Y. Liu and S. Hu acknowledge support from the Graduate Scientific Research and Innovation Fund of Yunnan University (Grant No. KC-22221060).

Phonon resonance modulation in weak van der Waals heterostructures: Controlling thermal transport in graphene—silicon nanoparticle systems

Yi Li(李毅), Yinong Liu(刘一浓), and Shiqian Hu(胡世谦)   

  1. School of Physics and Astronomy, Yunnan University, Kunming 650091, China
  • Received:2023-11-19 Revised:2023-12-03 Accepted:2023-12-13 Online:2024-03-19 Published:2024-03-19
  • Contact: Shiqian Hu E-mail:shiqian@ynu.edu.cn
  • Supported by:
    This research was funded in parts by the National Natural Science Foundation of China (Grant No. 12105242) and Yunnan Fundamental Research Project (Grant Nos. 202201AT070161 and 202301AW070006). Y. Li, Y. Liu and S. Hu acknowledge support from the Graduate Scientific Research and Innovation Fund of Yunnan University (Grant No. KC-22221060).

摘要: The drive for efficient thermal management has intensified with the miniaturization of electronic devices. This study explores the modulation of phonon transport within graphene by introducing silicon nanoparticles influenced by van der Waals forces. Our approach involves the application of non-equilibrium molecular dynamics to assess thermal conductivity while varying the interaction strength, leading to a noteworthy reduction in thermal conductivity. Furthermore, we observe a distinct attenuation in length-dependent behavior within the graphene—nanoparticles system. Our exploration combines wave packet simulations with phonon transmission calculations, aligning with a comprehensive analysis of the phonon transport regime to unveil the underlying physical mechanisms at play. Lastly, we conduct transient molecular dynamics simulations to investigate interfacial thermal conductance between the nanoparticles and the graphene, revealing an enhanced thermal boundary conductance. This research not only contributes to our understanding of phonon transport but also opens a new degree of freedom for utilizing van der Waals nanoparticle-induced resonance, offering promising avenues for the modulation of thermal properties in advanced materials and enhancing their performance in various technological applications.

关键词: thermal conductivity, molecular dynamics, phonon resonance, van der Waals interaction, graphene—silicon nanoparticle heterostructure

Abstract: The drive for efficient thermal management has intensified with the miniaturization of electronic devices. This study explores the modulation of phonon transport within graphene by introducing silicon nanoparticles influenced by van der Waals forces. Our approach involves the application of non-equilibrium molecular dynamics to assess thermal conductivity while varying the interaction strength, leading to a noteworthy reduction in thermal conductivity. Furthermore, we observe a distinct attenuation in length-dependent behavior within the graphene—nanoparticles system. Our exploration combines wave packet simulations with phonon transmission calculations, aligning with a comprehensive analysis of the phonon transport regime to unveil the underlying physical mechanisms at play. Lastly, we conduct transient molecular dynamics simulations to investigate interfacial thermal conductance between the nanoparticles and the graphene, revealing an enhanced thermal boundary conductance. This research not only contributes to our understanding of phonon transport but also opens a new degree of freedom for utilizing van der Waals nanoparticle-induced resonance, offering promising avenues for the modulation of thermal properties in advanced materials and enhancing their performance in various technological applications.

Key words: thermal conductivity, molecular dynamics, phonon resonance, van der Waals interaction, graphene—silicon nanoparticle heterostructure

中图分类号:  (Electric and thermal conductivity)

  • 74.25.fc
43.20.Ks (Standing waves, resonance, normal modes) 65.80.Ck (Thermal properties of graphene)