Contact angle saturation in electrowetting using different electrode widths

Authors

Cindy Cease ⋅ PH Institute of Mathematical Sciences and Physics, University of the Philippines Los Baños
Joybel Bugna ⋅ PH Institute of Mathematical Sciences and Physics, University of the Philippines Los Baños
Lou Serafin Lozada ⋅ PH Institute of Mathematical Sciences and Physics, University of the Philippines Los Baños

Abstract

In the present study, we investigated the effect of voltage applied between a sessile drop and a metal strip. The drop is insulated from metal strips by a dielectric material coated with a hydrophobic layer. The width of metal strips used were w = 0.3, 0.6, 1.0, 1.5, 2.0 mm. Results revealed that droplet deformation, measured using the change in contact angle, agrees with the
Lippmann-Young equation for V_applied < V_sat. Contact angle saturation was observed at V_applied ≥ V_sat,ave. Saturation voltage and change in contact angle decreased for width w from 0.3 mm to 1.0 mm. However deformation was greater for w > 1.0.

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Issue

2013: Proceedings of the 31st Samahang Pisika ng Pilipinas Physics Congress

Article ID

SPP2013-PB-12

Section

Poster Session PB

Published

2013-10-23

How to Cite

[1]

C Cease, J Bugna, and LS Lozada, Contact angle saturation in electrowetting using different electrode widths, Proceedings of the Samahang Pisika ng Pilipinas 31, SPP2013-PB-12 (2013). URL: https://proceedings.spp-online.org/article/view/SPP2013-PB-12.