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Anomalous near-equilibrium capillary imbibition induced by nanoscale surface topography (in EN)

Journal Article · · Colloids and Surfaces A: Physicochemical and Engineering Aspects
Here, this work reports that the nanoscale surface topography induces a crossover from the classical Lucas–Washburn imbibition dynamics to a long-lived anomalously slow regime observed near thermodynamic equilibrium conditions. A compact analytical model considering the interplay between interfacial wetting, thermal motion, and the nanoscale physical topography accounts for experimental observations for the case of capillary rise of different nonvolatile liquids in simple glass tubes. Analytical predictions supported by topographic analysis via atomic force microscopy indicate that topographic features with a specific range of nanoscale dimensions determine the crossover condition and anomalous imbibition rate. Our findings have important implications for the scientific understanding and technical application of capillary imbibition and suggest strategies to control the adsorption of specific liquids in porous materials with complex surface topography.
Research Organization:
Brookhaven National Laboratory (BNL), Upton, NY (United States); State Univ. of New York (SUNY), Albany, NY (United States)
Sponsoring Organization:
Agence Nationale de la Recherche (ANR); National Science Foundation (NSF); USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities (SUF)
Grant/Contract Number:
SC0012673; SC0012704
OSTI ID:
2576504
Journal Information:
Colloids and Surfaces A: Physicochemical and Engineering Aspects, Journal Name: Colloids and Surfaces A: Physicochemical and Engineering Aspects Journal Issue: B Vol. 676; ISSN 0927-7757
Publisher:
Elsevier BVCopyright Statement
Country of Publication:
United States
Language:
EN

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