Jigsaw electrode design for electrowetting devices

Micro & nano letters

article

Shiraz Sohail¹  Zainul Abdin Jaffery¹  Karabi Biswas² 

[1] Department of Electrical Engineering, Jamia Millia Islamia (A Central University);Department of Electrical Engineering, Indian Institute of Technology (IIT) Kharagpur

关键词: 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;   

DOI  :  10.1049/mnl.2019.0027

学科分类：计算机科学（综合）

来源: Wiley

【 摘 要 】

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.

【 授权许可】

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