Near-field radiative heat transport between nanoparticles inside a cavity configuration
Near-field radiative heat transport between nanoparticles inside a cavity configuration
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空腔结构内纳米颗粒之间的近场辐射热传输
DOI：
10.1016/j.ijheatmasstransfer.2022.123213
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发表时间：
2022
影响因子：
5.2
通讯作者：
Changying Zhao
中科院分区：
文献类型：
--
作者：
J. Chen;B.X. Wang;Changying Zhao
• 提出了一个理论模型来研究空腔结构内两个或多个纳米颗粒之间的近场辐射传热（NFRHT）。 • 通过这种空腔配置，可以有效增强两个纳米粒子之间的NFRHT。对于 SiC 纳米粒子，腔体结构的最大放大超过七个数量级。 • 对于金纳米颗粒，最大放大倍数超过两个数量级。特别是，对 NFRHT 的电贡献可能超过磁贡献。 • 众所周知，辐射热传输在一维碳化硅纳米颗粒链中是超扩散的，我们通过这种具有小间隙的空腔结构实现了弹道热传输。提出了一种理论模型来研究由两个半无限 (SiC) 板组成的空腔结构内两个或多个 SiC/Au 纳米颗粒之间的近场辐射热传输。我们表明，空腔结构可以有效增强两个纳米颗粒之间的近场辐射传热（NFRHT），并且最大放大倍数对于 SiC 纳米颗粒超过七个数量级，对于 Au 纳米颗粒超过两个数量级。此外，对 NFRHT 的电贡献可以超过 Au 纳米粒子的磁贡献。我们发现上下 SiC 板的表面模式之间的强耦合在这种巨大的放大中起着主要作用。此外，已知一维碳化硅纳米颗粒链中的辐射热传输是超扩散的，我们通过这种具有小间隙的空腔结构实现了弹道热传输。这项工作的结果可能对纳米尺度的热管理有潜在的应用。
• A theoretical model is proposed to investigate the near-field radiative heat transfer (NFRHT) between two or more nanoparticles inside a cavity configuration. • By this cavity configuration, the NFRHT between two nanoparticles can be effectively enhanced. The maximum amplification of the cavity configuration goes beyond seven orders of magnitude for SiC nanoparticles. • As for Au nanoparticles, the maximum amplification goes beyond two orders of magnitude. In particular, the electric contribution to the NFRHT can exceed the magnetic contribution. • The radiative heat transport is known to be super-diffusive in one-dimensional SiC nanoparticle chains and we realize ballistic heat transport by this cavity configuration with small gap. A theoretical model is proposed to investigate the near-field radiative heat transport between two or more SiC/Au nanoparticles inside a cavity configuration composed of two semi-infinite (SiC) plates. We show that the cavity configuration can effectively enhance the near-field radiative heat transfer (NFRHT) between two nanoparticles, and the maximum amplification goes beyond seven orders of magnitude for SiC nanoparticles and two orders of magnitude for Au nanoparticles. Besides, the electric contribution to the NFRHT can exceed the magnetic contribution for Au nanoparticles. We find that the strong coupling between the surface modes of the upper and lower SiC plates plays the major role in this giant amplification. Moreover, the radiative heat transport is known to be super-diffusive in one-dimensional SiC nanoparticle chains and we realize ballistic heat transport by this cavity configuration with small gap. The findings of this work could have potential applications for the thermal management at nanoscale.
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影响因子：
3.7
作者：
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通讯作者：
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通讯作者：
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影响因子：
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