Wicking in a powder

P. S. Raux; H. Cockenpot; M. Ramaioli; D. Quéré; C. Clanet

doi:10.1021/la400015v

Wicking in a powder

P. S. Raux
, H. Cockenpot
, M. Ramaioli
, D. Quéré
, C. Clanet

Résultats de recherche: Contribution à un journal › Article › Revue par des pairs

Résumé

We investigate the wicking in granular media by considering layers of grains at the surface of a liquid and discuss the critical contact angle below which spontaneous impregnation takes place. This angle is found to be on the order of 55° for monodisperse layers, significantly smaller than 90°, the threshold value for penetrating assemblies of tubes. Owing to geometry, impregnating grains is more demanding than impregnating tubes. We also consider the additional effects of polydispersity and pressure on this wetting transition and discuss the corresponding shift observed for the critical contact angle.

langue originale	Anglais
Pages (de - à)	3636-3644
Nombre de pages	9
journal	Langmuir
Volume	29
Numéro de publication	11
Les DOIs	https://doi.org/10.1021/la400015v
état	Publié - 19 mars 2013

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10.1021/la400015v

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title = "Wicking in a powder",

abstract = "We investigate the wicking in granular media by considering layers of grains at the surface of a liquid and discuss the critical contact angle below which spontaneous impregnation takes place. This angle is found to be on the order of 55° for monodisperse layers, significantly smaller than 90°, the threshold value for penetrating assemblies of tubes. Owing to geometry, impregnating grains is more demanding than impregnating tubes. We also consider the additional effects of polydispersity and pressure on this wetting transition and discuss the corresponding shift observed for the critical contact angle.",

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PY - 2013/3/19

Y1 - 2013/3/19

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AB - We investigate the wicking in granular media by considering layers of grains at the surface of a liquid and discuss the critical contact angle below which spontaneous impregnation takes place. This angle is found to be on the order of 55° for monodisperse layers, significantly smaller than 90°, the threshold value for penetrating assemblies of tubes. Owing to geometry, impregnating grains is more demanding than impregnating tubes. We also consider the additional effects of polydispersity and pressure on this wetting transition and discuss the corresponding shift observed for the critical contact angle.

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U2 - 10.1021/la400015v

DO - 10.1021/la400015v

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IS - 11

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Wicking in a powder

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