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Quasi-Casimir coupling induced phonon heat transfer across a vacuum gap
http://hdl.handle.net/10228/0002000006
http://hdl.handle.net/10228/000200000627dec90c-49a1-417f-bdfa-854f3728b7c3
| 名前 / ファイル | ライセンス | アクション |
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10364552.pdf (799 KB)
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| アイテムタイプ | 学術雑誌論文 = Journal Article(1) | |||||||||||||||
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| 公開日 | 2023-07-24 | |||||||||||||||
| 資源タイプ | ||||||||||||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||||||||||||
| 資源タイプ | journal article | |||||||||||||||
| タイトル | ||||||||||||||||
| タイトル | Quasi-Casimir coupling induced phonon heat transfer across a vacuum gap | |||||||||||||||
| 言語 | en | |||||||||||||||
| 言語 | ||||||||||||||||
| 言語 | eng | |||||||||||||||
| 著者 |
Chen, Wentao
× Chen, Wentao
× 長山, 暁子
WEKO
15351
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| 抄録 | ||||||||||||||||
| 内容記述タイプ | Abstract | |||||||||||||||
| 内容記述 | In vacuum, thermal energy is transported by photons (thermal radiation) but not phonons. Recent studies, however, indicated that phonon heat transfer across a vacuum gap is mediated by the quantum fluctuation of electromagnetic fields. Specifically, in the heat exchange between two objects separated by a nanoscale vacuum gap, phonons carry thermal energy more efficiently than photons. However, it remains unclear if phonons can propagate without electromagnetic fields. Here, we demonstrate that phonon transmission across a sub-nanometer vacuum gap can be induced by quasi-Casimir force subjected to the Lennard–Jones atoms using classical molecular dynamics simulation. The net heat flux across the vacuum gap increases exponentially as the gap distance decreases, owing to acoustic phonon transmission. The local heat flux, evaluated using the Irving–Kirkwood method, increases singularly at the interfacial layers, while that at the inner layers agrees well with the net heat flux. These findings provide evidence of the strong thermal resonance induced by quasi-Casimir coupling between the interfacial layers. Thus, we conclude that the quasi-Casimir coupling induced by intermolecular interaction is a heat transfer mode for phonon heat transfer across a vacuum gap in nanoscale. | |||||||||||||||
| 書誌情報 |
en : International Journal of Heat and Mass Transfer 巻 176, p. 121431, 発行日 2021-05-24 |
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| 出版社 | ||||||||||||||||
| 出版者 | Elsevier | |||||||||||||||
| DOI | ||||||||||||||||
| 識別子タイプ | DOI | |||||||||||||||
| 関連識別子 | https://doi.org/10.1016/j.ijheatmasstransfer.2021.121431 | |||||||||||||||
| ISSN | ||||||||||||||||
| 収録物識別子タイプ | EISSN | |||||||||||||||
| 収録物識別子 | 1879-2189 | |||||||||||||||
| ISSN | ||||||||||||||||
| 収録物識別子タイプ | PISSN | |||||||||||||||
| 収録物識別子 | 0017-9310 | |||||||||||||||
| 著作権関連情報 | ||||||||||||||||
| 権利情報 | Copyright (c) 2021 Elsevier Ltd. All rights reserved. | |||||||||||||||
| キーワード | ||||||||||||||||
| 主題Scheme | Other | |||||||||||||||
| 主題 | Quasi-casimir coupling | |||||||||||||||
| キーワード | ||||||||||||||||
| 主題Scheme | Other | |||||||||||||||
| 主題 | Thermal resonance at interface | |||||||||||||||
| キーワード | ||||||||||||||||
| 主題Scheme | Other | |||||||||||||||
| 主題 | Phonon transmission | |||||||||||||||
| キーワード | ||||||||||||||||
| 主題Scheme | Other | |||||||||||||||
| 主題 | Near field heat transfer | |||||||||||||||
| キーワード | ||||||||||||||||
| 主題Scheme | Other | |||||||||||||||
| 主題 | Nanoscale vacuum gap | |||||||||||||||
| キーワード | ||||||||||||||||
| 主題Scheme | Other | |||||||||||||||
| 主題 | Molecular dynamics simulation | |||||||||||||||
| 出版タイプ | ||||||||||||||||
| 出版タイプ | AM | |||||||||||||||
| 出版タイプResource | http://purl.org/coar/version/c_ab4af688f83e57aa | |||||||||||||||
| 査読の有無 | ||||||||||||||||
| 値 | yes | |||||||||||||||
| 研究者情報 | ||||||||||||||||
| URL | https://hyokadb02.jimu.kyutech.ac.jp/html/28_ja.html | |||||||||||||||
