Dynamics of Ferrofluid Drops on Magnetically Patterned Surfaces

The motion of liquid drops on solid surfaces is attracting a lot of attention because of its fundamental implications and wide technological applications. In this article, we present a comprehensive experimental study of the interaction between gravity-driven ferrofluid drops on very slippery oil-im...

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Veröffentlicht in:Langmuir : the ACS journal of surfaces and colloids. - 1992. - 34(2018), 30 vom: 31. Juli, Seite 8917-8922
1. Verfasser: Rigoni, C (VerfasserIn)
Weitere Verfasser: Ferraro, D, Carlassara, M, Filippi, D, Varagnolo, S, Pierno, M, Talbot, D, Abou-Hassan, A, Mistura, G
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2018
Zugriff auf das übergeordnete Werk:Langmuir : the ACS journal of surfaces and colloids
Schlagworte:Journal Article Research Support, Non-U.S. Gov't
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520 |a The motion of liquid drops on solid surfaces is attracting a lot of attention because of its fundamental implications and wide technological applications. In this article, we present a comprehensive experimental study of the interaction between gravity-driven ferrofluid drops on very slippery oil-impregnated surfaces and a patterned magnetic field. The drop speed can be accurately tuned by the magnetic interaction, and more interestingly, drops are found to undergo a stick-slip motion whose contrast and phase can be easily tuned by changing either the strength of the magnetic field or the ferrofluid concentration. This motion is the result of the periodic modulation of the external magnetic field and can be accurately analyzed because the intrinsic pinning due to chemical defects is negligible on oil-impregnated surfaces 
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700 1 |a Ferraro, D  |e verfasserin  |4 aut 
700 1 |a Carlassara, M  |e verfasserin  |4 aut 
700 1 |a Filippi, D  |e verfasserin  |4 aut 
700 1 |a Varagnolo, S  |e verfasserin  |4 aut 
700 1 |a Pierno, M  |e verfasserin  |4 aut 
700 1 |a Talbot, D  |e verfasserin  |4 aut 
700 1 |a Abou-Hassan, A  |e verfasserin  |4 aut 
700 1 |a Mistura, G  |e verfasserin  |4 aut 
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