Electrohydrodynamics modeling of droplet actuation on a solid surface by surfactant-mediated electrodewetting
Weiqi Chu, Hangjie Ji, Qining Leo Wang, Chang‐Jin Kim, Andrea L. Bertozzi
Abstract
Developed to address the drawbacks of electro-wetting, electro-dewetting is a digital microfluidic technique that makes a liquid dewet on a substrate using an electric potential. In this paper, we propose an electrohydrodynamic model to describe the dynamic evolution of a charged slender drop under the influence of an external electric field. We introduce lubrication theory to simplify the model and reproduce fundamental microfluidic operations, including dewetting, rewetting, and droplet shifting.
Topics & Concepts
ElectrohydrodynamicsDewettingMicrofluidicsElectric fieldWettingDrop (telecommunication)Lubrication theoryNanotechnologyDigital microfluidicsMaterials scienceMechanicsElectrowettingLubricationMechanical engineeringOptoelectronicsPhysicsEngineeringDielectricComposite materialQuantum mechanicsElectrowetting and Microfluidic TechnologiesElectrohydrodynamics and Fluid DynamicsInnovative Microfluidic and Catalytic Techniques Innovation