electrowetting – Page 2 – TechConnect Briefs

Manipulation of Capillary force by Electrowetting for Micromanipulation

Chandra S., Batur C., University of Akron, US

Microassembly is the future of MEMS and NEMS technology. But greatest barrier to the idea of micro scale assembly is micromanipulation. The steps in micromanipulation are pickup, moving and releasing and the most difficult part [...]

Shape Oscillation and Internal Mixing in Sessile Liquid Drops using ElectroWetting-On-Dielectric (EWOD)

Miraghaie R., Sterling J.D., Nadim A., Keck Graduate Institute, US

We show that internal mixing within a sessile liquid drop can be significantly enhanced by means of so-called electrowetting-on-dielectric (EWOD), using an alternating electric potential. This is done experimentally by comparing the coalescence and mixing [...]

Modeling microdrop motion between covered and open regions of EWOD microsystems

Berthier J., Clementz Ph., Roux J-M, Fouillet Y., Peponnet C., CEA-LETI, FR

Digital microfluidics is a promising way to manipulate biological targets like DNA, proteins or cells in very small liquid volumes. The advantages of such devices are the use of lesser quantities of costly reagents, better [...]

A Computational Model for the Design of ElectroWetting On Dielectric (EWOD) Systems

Bedekar A.S., Jenkins J.W., Sundaram S., CFD Research Corporation, US

Microfluidics has enabled the development of integrated lab-on-a-chip (LoC) devices for use in a clinical diagnostics, high throughput screening, drug discovery, biodefense and environmental monitoring. Although most microfluidic devices are based on continuous flow of [...]

Modeling the Fluid Dynamics of Electro-Wetting on Dielectric (EWOD)

Walker S., Shapiro B., University of Maryland, US

By applying voltages across a liquid droplet and an underlying dielectric, it is possible to make dielectric forces compete with surface tension forces, and to thereby cause the liquid droplet to change shape. This effect [...]

Electrode Shapes for Electrowetting Arrays

Lienemann J., Greiner A., Korvink J.G., Albert Ludwig University, DE

We calculate the potential energy of an electrowetting array for different shapes and sizes of interdigital edge structures. To understand the dynamic effects at the beginning of the droplet motion is crucial for the optimization [...]

Reconfigurable Microfluidic System Architecture Based on Two-Dimensional Electrowetting Arrays

Ding J., Chakrabarty K., Fair R.B., Duke University, US

We present an architectural design and optimization methodology for performing biochemical reactions using two-dimensional electrowetting arrays. We define a set of basic microfluidic operations and leverage electronic design automation principles for system partitioning, resource allocation, [...]