Jigsaw electrode design for electrowetting devices. (4th September 2019)

• Record Type: Journal Article
• Authors: Sohail, Shiraz; Jaffery, Zainul Abdin; Biswas, Karabi
• Is Part Of: Micro & nano letters. Volume 14:Number 10(2019)
• Page Start: 1046
• Page End: 1051
• Publication Date: 2019-09-04
• Subjects: electrodes -- drops -- dielectric devices -- wetting -- metallic thin films; power supply -- jigsaw electrode design -- inner electrodes -- electrowetting‐on‐dielectric devices -- voltage supply -- electrode‐pad -- triangular sections -- traditional square electrode -- electrode shape -- three‐phase contact line -- supply voltage -- actuating electrode -- device fabrication -- external pin connection -- two‐dimensional electrode array -- electromechanical force -- droplet -- vertical directions -- horizontal directions -- metal thin film deposition; Nanotechnology -- Periodicals; Nanostructures -- Periodicals; Microtechnology -- Periodicals; 620.5
• DOI: 10.1049/mnl.2019.0027
• Languages: English
• ISSNs: 1750-0443

Abstract

Abstract : A new type of electrode design (jigsaw in shape) is presented for actuating inner electrodes in electrowetting‐on‐dielectric devices containing large two‐dimensional array of electrodes. Electrodes are diagonally connected with one external pin to the voltage supply. Each electrode‐pad is made by carving (or cutting) out two triangular sections from the sides and adding two triangular sections on the top and bottom of the traditional square electrode. This modification in electrode shape creates an imbalance of electromechanical force at the three‐phase contact line on applying the supply voltage to the actuating electrode. Droplet moves towards either horizontal or vertical directions depending on the direction of the dominant force. The scheme requires a single layer of metal thin film deposition for device fabrication and also reduces the number of external pin connections to the power supply.