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Comparison between longitudinal viscoelastic relaxation and sound dispersion of molecular liquids on the molecular scale
http://hdl.handle.net/2237/0002004223
http://hdl.handle.net/2237/0002004223f490301d-b629-48c1-9105-e81c5a970134
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
5_0098098.pdf (5.2 MB)
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| Item type | itemtype_ver1(1) | |||||||
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| 公開日 | 2022-11-29 | |||||||
| タイトル | ||||||||
| タイトル | Comparison between longitudinal viscoelastic relaxation and sound dispersion of molecular liquids on the molecular scale | |||||||
| 言語 | en | |||||||
| 著者 |
Yamaguchi, Tsuyoshi
× Yamaguchi, Tsuyoshi
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| アクセス権 | ||||||||
| アクセス権 | open access | |||||||
| アクセス権URI | http://purl.org/coar/access_right/c_abf2 | |||||||
| 権利 | ||||||||
| 言語 | en | |||||||
| 権利情報 | Copyright 2022 Author(s). Published under an exclusive license by AIP Publishing. This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing.The following article appeared in (J. Chem. Phys. 156, 244505 (2022)) and may be found at (https://doi.org/10.1063/5.0098098). | |||||||
| 内容記述 | ||||||||
| 内容記述タイプ | Abstract | |||||||
| 内容記述 | Molecular dynamics simulation on some molecular liquids was performed to study sound dispersion on the molecular scale. The sound velocity was determined from the intermediate scattering function, and the relation between the longitudinal modulus and frequency was compared with the frequency-dependent longitudinal modulus in the q = 0 limit evaluated by the Kubo–Green theory. The sound dispersion of a monoatomic liquid up to qσ ≅ 2 was almost quantitatively explained by the viscoelasticity in the q = 0 limit when the wavenumber dependence of the heat capacity ratio was taken into account. The situation was similar for a polyatomic molecular liquid for which the intramolecular degrees of freedom were fixed. For a polyatomic liquid with intramolecular degrees of freedom, the sound dispersion on the molecular scale was connected to the high-frequency limit of the ultrasonic relaxation mode assigned to the vibrational energy relaxation. After subtracting the contribution of the vibrational energy relaxation, both the longitudinal viscoelasticity and the sound dispersion depended little on the presence of intramolecular degrees of freedom. | |||||||
| 言語 | en | |||||||
| 出版者 | ||||||||
| 出版者 | AIP Publishing | |||||||
| 言語 | en | |||||||
| 言語 | ||||||||
| 言語 | eng | |||||||
| 資源タイプ | ||||||||
| 資源タイプresource | http://purl.org/coar/resource_type/c_6501 | |||||||
| タイプ | journal article | |||||||
| 出版タイプ | ||||||||
| 出版タイプ | VoR | |||||||
| 出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||||
| 関連情報 | ||||||||
| 関連タイプ | isVersionOf | |||||||
| 識別子タイプ | DOI | |||||||
| 関連識別子 | https://doi.org/10.1063/5.0098098 | |||||||
| 収録物識別子 | ||||||||
| 収録物識別子タイプ | PISSN | |||||||
| 収録物識別子 | 0021-9606 | |||||||
| 書誌情報 |
en : The Journal of Chemical Physics 巻 156, 号 24, p. 244505, 発行日 2022-06-29 |
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| ファイル公開日 | ||||||||
| 日付 | 2023-06-29 | |||||||
| 日付タイプ | Available | |||||||
