Electrowetting-induced morphological transitions of fluid microstructures

Journal of Applied Physics

Volumn 95, Issue 5, 2004, Pages 2918-2920

  Klingner, Anke ^a   Mugele, Frieder ^a  

^a UNIVERSITY OF ULM   (Germany)

Author keywords

[No Author keywords available]

Indexed keywords

CONTACT ANGLE; ELECTRIC POTENTIAL; ELECTRODES; GLYCEROL; HYDROPHILICITY; HYDROPHOBICITY; INTERFACES (MATERIALS); MORPHOLOGY; PERMITTIVITY; SURFACE TOPOGRAPHY; WETTING;

ELECTROWETTING; MICROFLUIDIC DEVICES;

MICROSTRUCTURE;

EID: 1642382826     PISSN: 00218979     EISSN: None     Source Type: Journal    
DOI: 10.1063/1.1643771     Document Type: Article

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20. Close to the critical voltage, reproducibility becomes poor due to sample degradation.
21. This force is counteracted by contact angle hysteresis. With the present opening angle, pinning forces were too strong to allow for a continuous motion of the droplet. (This experiment was performed in air.) In order to overcome pinning, the voltage had to be reduced to zero in between two consecutive images in Fig. 3. The time between the first and the last images was approximately 30 s.