Controlling the breakup of toroidal liquid films on solid surfaces

Abstract The breakup of a slender filament of liquid driven by surface tension is a classical fluid dynamics stability problem that is important in many situations where fine droplets are required. When the filament is resting on a flat solid surface which imposes wetting conditions the subtle inter...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Andrew M. J. Edwards, Élfego Ruiz-Gutiérrez, Michael I. Newton, Glen McHale, Gary G. Wells, Rodrigo Ledesma-Aguilar, Carl V. Brown
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/4224cf7382594b87b9fa5f942205cf35
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:4224cf7382594b87b9fa5f942205cf35
record_format	dspace
spelling	oai:doaj.org-article:4224cf7382594b87b9fa5f942205cf352021-12-02T14:30:46ZControlling the breakup of toroidal liquid films on solid surfaces10.1038/s41598-021-87549-52045-2322https://doaj.org/article/4224cf7382594b87b9fa5f942205cf352021-04-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-87549-5https://doaj.org/toc/2045-2322Abstract The breakup of a slender filament of liquid driven by surface tension is a classical fluid dynamics stability problem that is important in many situations where fine droplets are required. When the filament is resting on a flat solid surface which imposes wetting conditions the subtle interplay with the fluid dynamics makes the instability pathways and mode selection difficult to predict. Here, we show how controlling the static and dynamic wetting of a surface can lead to repeatable switching between a toroidal film of an electrically insulating liquid and patterns of droplets of well-defined dimensions confined to a ring geometry. Mode selection between instability pathways to these different final states is achieved by dielectrophoresis forces selectively polarising the dipoles at the solid-liquid interface and so changing both the mobility of the contact line and the partial wetting of the topologically distinct liquid domains. Our results provide insights into the wetting and stability of shaped liquid filaments in simple and complex geometries relevant to applications ranging from printing to digital microfluidic devices.Andrew M. J. EdwardsÉlfego Ruiz-GutiérrezMichael I. NewtonGlen McHaleGary G. WellsRodrigo Ledesma-AguilarCarl V. BrownNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-13 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Andrew M. J. Edwards Élfego Ruiz-Gutiérrez Michael I. Newton Glen McHale Gary G. Wells Rodrigo Ledesma-Aguilar Carl V. Brown Controlling the breakup of toroidal liquid films on solid surfaces
description	Abstract The breakup of a slender filament of liquid driven by surface tension is a classical fluid dynamics stability problem that is important in many situations where fine droplets are required. When the filament is resting on a flat solid surface which imposes wetting conditions the subtle interplay with the fluid dynamics makes the instability pathways and mode selection difficult to predict. Here, we show how controlling the static and dynamic wetting of a surface can lead to repeatable switching between a toroidal film of an electrically insulating liquid and patterns of droplets of well-defined dimensions confined to a ring geometry. Mode selection between instability pathways to these different final states is achieved by dielectrophoresis forces selectively polarising the dipoles at the solid-liquid interface and so changing both the mobility of the contact line and the partial wetting of the topologically distinct liquid domains. Our results provide insights into the wetting and stability of shaped liquid filaments in simple and complex geometries relevant to applications ranging from printing to digital microfluidic devices.
format	article
author	Andrew M. J. Edwards Élfego Ruiz-Gutiérrez Michael I. Newton Glen McHale Gary G. Wells Rodrigo Ledesma-Aguilar Carl V. Brown
author_facet	Andrew M. J. Edwards Élfego Ruiz-Gutiérrez Michael I. Newton Glen McHale Gary G. Wells Rodrigo Ledesma-Aguilar Carl V. Brown
author_sort	Andrew M. J. Edwards
title	Controlling the breakup of toroidal liquid films on solid surfaces
title_short	Controlling the breakup of toroidal liquid films on solid surfaces
title_full	Controlling the breakup of toroidal liquid films on solid surfaces
title_fullStr	Controlling the breakup of toroidal liquid films on solid surfaces
title_full_unstemmed	Controlling the breakup of toroidal liquid films on solid surfaces
title_sort	controlling the breakup of toroidal liquid films on solid surfaces
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/4224cf7382594b87b9fa5f942205cf35
work_keys_str_mv	AT andrewmjedwards controllingthebreakupoftoroidalliquidfilmsonsolidsurfaces AT elfegoruizgutierrez controllingthebreakupoftoroidalliquidfilmsonsolidsurfaces AT michaelinewton controllingthebreakupoftoroidalliquidfilmsonsolidsurfaces AT glenmchale controllingthebreakupoftoroidalliquidfilmsonsolidsurfaces AT garygwells controllingthebreakupoftoroidalliquidfilmsonsolidsurfaces AT rodrigoledesmaaguilar controllingthebreakupoftoroidalliquidfilmsonsolidsurfaces AT carlvbrown controllingthebreakupoftoroidalliquidfilmsonsolidsurfaces
_version_	1718391186667864064

Controlling the breakup of toroidal liquid films on solid surfaces

Ejemplares similares