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Artículo

Wetting and dewetting processes in the axial retraction of liquid filaments

Ravazzoli, Pablo DamiánIcon ; Cuellar Berrio, Ingrith PaolaIcon ; Gonzalez, Alejandro GuillermoIcon ; Diez, Javier AlbertoIcon
Fecha de publicación: 05/2017
Editorial: American Physical Society
Revista: Physical Review E
ISSN: 2470-0045
e-ISSN: 2470-0053
Idioma: Inglés
Tipo de recurso: Artículo publicado
Clasificación temática:
Astronomía; Nano-materiales

Resumen

We study the hydrodynamic mechanisms involved in the motion of the contact line formed at the end region of a liquid filament laying on a planar and horizontal substrate. Since the flow develops under partially wetting conditions, the tip of the filament recedes and forms a bulged region (head) that subsequently develops a neck region behind it. Later the neck breaks up leading to a separated drop, while the rest of the filament restarts the sequence. One main feature of this flow is that the whole dynamics and final drop shapes are strongly influenced by the hysteresis of the contact angle typical in most of the liquid-substrate systems. The time evolution till breakup is studied experimentally and pictured in terms of a hybrid wettability theory which involves the Cox-Voinov hydrodynamic approach combined with the molecular kinetic theory developed by Blake. The parameters of this theory are determined for our liquid-substrate system (silicone oil–coated glass). The experimental results of the retracting filament are described in terms of a simple heuristic model and compared with numerical simulations of the full Navier-Stokes equations. This study is of special interest in the context of pulsed laser-induced dewetting.
Palabras clave: Dewetting , Liquid Filament , Breakup , Drops
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info:eu-repo/semantics/openAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution 2.5 Unported (CC BY 2.5)
Identificadores
URI: http://hdl.handle.net/11336/58153
URL: http://link.aps.org/doi/10.1103/PhysRevE.95.053111
URL: https://arxiv.org/abs/1703.05147
DOI: http://dx.doi.org/10.1103/PhysRevE.95.053111
Colecciones
Articulos(CIFICEN)
Articulos de CENTRO DE INV. EN FISICA E INGENIERIA DEL CENTRO DE LA PCIA. DE BS. AS.
Citación
Ravazzoli, Pablo Damián; Cuellar Berrio, Ingrith Paola; Gonzalez, Alejandro Guillermo; Diez, Javier Alberto; Wetting and dewetting processes in the axial retraction of liquid filaments; American Physical Society; Physical Review E; 95; 5; 5-2017; 531111-5311116
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