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Fundamentals and Simulation of Electrowetting: Focus on Electrowetting Lens
Recent Innovations in Chemical Engineering (Formerly Recent Patents on Chemical Engineering), 2023Introduction: Electrowetting has become one of the most widely used phenomena for utilizing miniature contents of liquids on surfaces. Method: Electrowetting is an effective way to modify the droplet’s form with an electrical field. In this work, we will review some basics of electrowetting fundamentals and details of electrowetting on dielectric ...
Masoud Safari +2 more
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Electrowetting with Electrolytes
Physical Review Letters, 2006A theory of electrowetting is developed for systems containing an interface between two immiscible electrolytic solutions. Laws for the dependence of contact angle on electrode potential are presented. Ionic impermeability of the liquid-liquid interface and nonlinear double-layer responses rationalize observed phenomena such as contact-angle saturation
Charles W, Monroe +3 more
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Electrowetting: A Consideration in Electroadhesion
IEEE Transactions on Haptics, 2020With the commercialization of haptic devices, understanding behavior under various environmental conditions is crucial for product optimization and cost reduction. Specifically, for surface haptic devices, the dependence of the friction force and the electroadhesion effect on the environmental relative humidity and the finger hydration level can ...
Xinyi Li +8 more
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Flexible electrowetting and electrowetting on flexible substrates
SPIE Proceedings, 2011Electrowetting (EW) technology is shown to be quite flexible in operation and able to operate on flexible substrates. Complementary ON/OFF characteristics of EW devices have been obtained through a plasma irradiation and annealing process. This enables the design of EW array operation in a reduced power mode.
Andrew J. Steckl, Han You, Duk-Young Kim
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Electrowetting of Ionic Liquids
Journal of the American Chemical Society, 2006We have successfully demonstrated that imidazolium- and pyrrolidinium-based commercial room-temperature ionic liquids can electrowet (with a dc voltage) a smooth fluoropolymer (Teflon AF1600) surface. Qualitatively, the process is analogous to the electrowetting of aqueous electrolyte solutions: the contact angle versus voltage curve has a parabolic ...
Stefano, Millefiorini +4 more
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Hydrodynamic Flows in Electrowetting
Langmuir, 2008In this work, we found experimentally that there exist fairly strong fluid flows in AC electrowetting, which can be utilized as a means to mix the fluids in EWOD-based micro-devices. We visualized the internal flow. There may exist two distinct flow-generation mechanisms; one is the droplet oscillation, and the other is the electrohydrodynamic flow ...
Ko, SH, Lee, H, Kang, KH
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Annals of the New York Academy of Sciences, 2006
Abstract: Numerical simulation of a zero‐leakage microvalve is investigated where a liquid droplet is used as a gate to regulate the flow in a T junction. The droplet gate is activated by changing its surface tension via an applied electric field.
Kamran, Mohseni, Ali, Dolatabadi
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Abstract: Numerical simulation of a zero‐leakage microvalve is investigated where a liquid droplet is used as a gate to regulate the flow in a T junction. The droplet gate is activated by changing its surface tension via an applied electric field.
Kamran, Mohseni, Ali, Dolatabadi
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Modeling, Simulation, and Optimization of Electrowetting
IEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems, 2006Electrowetting is an elegant method to realize the motion, dispensing, splitting, and mixing of single droplets in a microfluidic system without the need for any mechanical—and fault-prone—components. By only applying an electric voltage, the interfacial energy of the fluid–solid interface is altered and the contact line of the droplet is changed ...
Jan Lienemann +2 more
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Electrowetting at the Nanoscale
The Journal of Physical Chemistry C, 2006Using molecular simulations of nanosized aqueous droplets on a model graphite surface, we demonstrate remarkable sensitivity of water contact angles to the applied electric field polarity and direction relative to the liquid/solid interface. The effect is explained by analyzing the influence of the field on interfacial hydrogen bonding in the nanodrop,
Daub, C. D. +3 more
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