Journal ArticleDOI
Creating, transporting, cutting, and merging liquid droplets by electrowetting-based actuation for digital microfluidic circuits
TLDR
In this paper, the authors report the completion of four fundamental fluidic operations considered essential to build digital microfluidic circuits, which can be used for lab-on-a-chip or micro total analysis system (/spl mu/TAS): 1) creating, 2) transporting, 3) cutting, and 4) merging liquid droplets, all by electrowetting.Abstract:
Reports the completion of four fundamental fluidic operations considered essential to build digital microfluidic circuits, which can be used for lab-on-a-chip or micro total analysis system (/spl mu/TAS): 1) creating, 2) transporting, 3) cutting, and 4) merging liquid droplets, all by electrowetting, i.e., controlling the wetting property of the surface through electric potential. The surface used in this report is, more specifically, an electrode covered with dielectrics, hence, called electrowetting-on-dielectric (EWOD). All the fluidic movement is confined between two plates, which we call parallel-plate channel, rather than through closed channels or on open surfaces. While transporting and merging droplets are easily verified, we discover that there exists a design criterion for a given set of materials beyond which the droplet simply cannot be cut by EWOD mechanism. The condition for successful cutting is theoretically analyzed by examining the channel gap, the droplet size and the degree of contact angle change by electrowetting on dielectric (EWOD). A series of experiments is run and verifies the criterion.read more
Citations
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Journal ArticleDOI
A Low-Cost, Disposable and Portable Inkjet-Printed Biochip for the Developing World.
TL;DR: This work presents a low-cost and simple fabrication procedure for EWOD-DMF electrode arrays, which can be performed anywhere with a commercial office inkjet printer without the need of expensive cleanroom facilities, and demonstrates the utility of the platform to move and mix droplets of different reagents and physiologically conductive buffers.
Journal ArticleDOI
Automated detection of particle concentration and chemical reactions in EWOD devices
TL;DR: The first real-time detection of particle concentration and chemical reactions in electrowetting on dielectric devices without the need for optical access was reported in this article. But this was performed with mixtures created off-chip and in droplet that were statically mixed on chip.
Journal ArticleDOI
Single-Sided Digital Microfluidic (SDMF) Devices for Effective Coolant Delivery and Enhanced Two-Phase Cooling
Sung-Yong Park,Youngsuk Nam +1 more
TL;DR: In this article, a single-sided digital microfluidic (SDMF) device is presented to handle liquid handling on a single side and two-phase heat transfer to enhance thermal rejection performance.
Journal ArticleDOI
Electrowetting on dielectric driven droplet resonance and mixing enhancement in parallel-plate configuration
TL;DR: This study experimentally verifies that the mixing process in a droplet can be enhanced by driving the droplet at resonant frequencies and at alternating driving frequencies using a parallel-plate electrowetting on dielectric device.
Journal ArticleDOI
Progress in low voltage reversible electrowetting with lubricated polymer honeycomb substrates
Edward Bormashenko,Roman Pogreb,Yelena Bormashenko,Hadas Aharoni,Evgeny Shulzinger,Roman Grinev,Daniel Rozenman,Ziva Rozenman +7 more
TL;DR: In this paper, a theoretical analysis of the thermodynamics of the electrowetting on a liquid-infused film is reported, and an analysis of viscous dissipation taking place under the proposed electrowetting scheme is presented.
References
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Book
Fundamentals of microfabrication
TL;DR: The second edition of the Fundamentals of Microfabrication as discussed by the authors provides an in-depth coverage of the science of miniaturization, its methods, and materials, from the fundamentals of lithography through bonding and packaging to quantum structures and molecular engineering.
Journal ArticleDOI
Electrowetting-based actuation of liquid droplets for microfluidic applications
TL;DR: In this article, a microactuator for rapid manipulation of discrete microdroplets is presented, which is accomplished by direct electrical control of the surface tension through two sets of opposing planar electrodes fabricated on glass.
Book
Micromachined Transducers Sourcebook
TL;DR: In this paper, the authors present an overview of Micromachining Techniques, Mechanical Transducers, Optical Transducers and Ionizing Radiation Transducers for Microfluidic Devices.
Journal ArticleDOI
Electrowetting-based actuation of droplets for integrated microfluidics
TL;DR: In this paper, an alternative approach to microfluidics based upon the micromanipulation of discrete droplets of aqueous electrolyte by electrowetting is reported.