Control the transport of phonon in a broad frequency range in low dimensional materials

控制低维材料中宽频率范围内的声子传输

• 批准号: 22KJ0627
• 负责人: DING WENYANG
• 金额: $ 1.41万
• 依托单位: The University of Tokyo
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for JSPS Fellows
• 财政年份: 2023
• 资助国家: 日本
• 起止时间: 2023-03-08 至 2024-03-31
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-22KJ0627/
• 关键词: VdW heterostructures; Thermal conductivity; Phonon incident angle; vdW heterostructures; Materials informatics; Bayesian optimization

VdW heterostructures are an ideal candidate to realize low thermal conductivity in their through-thickness direction due to its weak interlayer interactions and prominent disorder by alternating stacking orders. Herein, for the first time, heat conduction in vdW heterostructures are resolved to the level of individual phonon polarizations, whose incident angles are utilized to elucidate the role that phononinterference and phonon tunneling play in vdW heterostructures.

VdW 异质结构是在厚度方向实现低导热率的理想候选材料，因为它具有弱的层间相互作用和通过交替堆叠顺序产生的显着无序性。在此，首次将 vdW 异质结构中的热传导解析为单个声子极化的水平，并利用其入射角来阐明声子干扰和声子隧道效应在 vdW 异质结构中的作用。

项目成果

Aperiodic van der Waals heterostructures with minimum thermal conductivity

具有最小热导率的非周期性范德华异质结构

• 发表时间: 2022
• 作者: Wenyang Ding;Shiqian Hu;Masato Ohnishi;Cheng Shao;Bin Xu;Junichiro Shiomi
• 通讯作者: Junichiro Shiomi