Electrically tunable wetting defects characterized by a simple capillary force sensor

We present a concept of a wetting defect of continuously variable strength based on electrowetting, along with a capillary force sensor adapted for the characterization of macroscopically heterogeneous surfaces. Patterned electrodes submerged under an insulating layer are used to generate potential...

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Veröffentlicht in:Langmuir : the ACS journal of surfaces and colloids. - 1992. - 29(2013), 31 vom: 06. Aug., Seite 9944-9
1. Verfasser: 't Mannetje, Dieter (VerfasserIn)
Weitere Verfasser: Banpurkar, Arun, Koppelman, Helmer, Duits, Michel H G, van den Ende, Dirk, Mugele, Frieder
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2013
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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500 |a CommentIn: Langmuir. 2013 Dec 10;29(49):15474-5. - PMID 24256467 
500 |a Citation Status MEDLINE 
520 |a We present a concept of a wetting defect of continuously variable strength based on electrowetting, along with a capillary force sensor adapted for the characterization of macroscopically heterogeneous surfaces. Patterned electrodes submerged under an insulating layer are used to generate potential wells for drops of electrically conductive liquids on the solid surface, with a well depth that scales with the diameter of the drop and square of the applied alternating (AC) voltage. We characterize the strength of the electrowetting trap and the hysteretic motion of the drop along the surface, using a simple force sensor based on optical imaging of a thin bendable capillary. A force resolution of approximately 0.1 μN is achieved 
650 4 |a Journal Article 
650 4 |a Research Support, Non-U.S. Gov't 
700 1 |a Banpurkar, Arun  |e verfasserin  |4 aut 
700 1 |a Koppelman, Helmer  |e verfasserin  |4 aut 
700 1 |a Duits, Michel H G  |e verfasserin  |4 aut 
700 1 |a van den Ende, Dirk  |e verfasserin  |4 aut 
700 1 |a Mugele, Frieder  |e verfasserin  |4 aut 
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