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Torsional fracture of viscoelastic liquid bridges
https://oist.repo.nii.ac.jp/records/2188
https://oist.repo.nii.ac.jp/records/218856ec57b4-f8ca-4a27-8434-9ef911021ebb
名前 / ファイル | ライセンス | アクション |
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Chan-2021-Torsional fracture of viscoelastic l (2.9 MB)
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Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (https://creativecommons.org/licenses/by-nc-nd/4.0/)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2021-08-13 | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | Torsional fracture of viscoelastic liquid bridges | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | edge fracture | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | viscoelasticity | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | liquid bridge | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | flow instability | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | contact printing | |||||
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 | |||||
著者(英) |
Chan, San To
× Chan, San To× van Berlo, Frank P. A.× Faizi, Hammad A.× Matsumoto, Atsushi× Haward, Simon J.× Anderson, Patrick D.× Shen, Amy Q. |
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書誌情報 |
en : Proceedings of the National Academy of Sciences 巻 118, 号 24, p. e2104790118, 発行日 2021-06-11 |
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抄録 | ||||||
内容記述タイプ | Other | |||||
内容記述 | Short liquid bridges are stable under the action of surface tension. In applications like electronic packaging, food engineering, and additive manufacturing, this poses challenges to the clean and fast dispensing of viscoelastic fluids. Here, we investigate how viscoelastic liquid bridges can be destabilized by torsion. By combining high-speed imaging and numerical simulation, we show that concave surfaces of liquid bridges can localize shear, in turn localizing normal stresses and making the surface more concave. Such positive feedback creates an indent, which propagates toward the center and leads to breakup of the liquid bridge. The indent formation mechanism closely resembles edge fracture, an often undesired viscoelastic flow instability characterized by the sudden indentation of the fluid's free surface when the fluid is subjected to shear. By applying torsion, even short, capillary stable liquid bridges can be broken in the order of 1 s. This may lead to the development of dispensing protocols that reduce substrate contamination by the satellite droplets and long capillary tails formed by capillary retraction, which is the current mainstream industrial method for destabilizing viscoelastic liquid bridges. | |||||
出版者 | ||||||
出版者 | PNAS | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 0027-8424 | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 1091-6490 | |||||
PubMed番号 | ||||||
関連タイプ | isIdenticalTo | |||||
識別子タイプ | PMID | |||||
関連識別子 | info:pmid/34117125 | |||||
DOI | ||||||
関連タイプ | isIdenticalTo | |||||
識別子タイプ | DOI | |||||
関連識別子 | info:doi/10.1073/pnas.2104790118 | |||||
権利 | ||||||
権利情報 | © 2021 the Author(s). | |||||
関連サイト | ||||||
識別子タイプ | URI | |||||
関連識別子 | https://www.pnas.org/content/118/24/e2104790118 | |||||
著者版フラグ | ||||||
出版タイプ | VoR | |||||
出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 |