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
Microfluidic droplet consistency monitoring and encapsulated cell detection via laser excitation
TL;DR: A systematic, quantitative approach as demonstrated with the experiments may be essential in the development of advanced microfluidic concepts that require exacting reproducibility and would greatly benefit from incorporated automated measurement techniques for process control.
Journal ArticleDOI
Numerical study on transient response of droplet deformation in a steady electric field
TL;DR: In this article, the transient response of droplet deformation in a steady electric field is investigated by the numerical simulation and the motion of interface is captured by level-set method, which is validated and found to be in good agreement with classic analytical solutions.
Journal ArticleDOI
Electrowetting Heat Pipes for Heat Transport Over Extended Distances
Renee S. Hale,Vaibhav Bahadur +1 more
TL;DR: In this paper, an electrowetting heat pipe (EHP) is proposed to replace the adiabatic wick section of a conventional heat pipe with EW-based pumping, which can transport ultrahigh heat loads (>1 kW) over extended distances (>1 m).
Proceedings ArticleDOI
On-chip liquid cooling with integrated pump technology
Herman Oprins,Céline Catherine Sarah Nicole,Jean-Christophe Baret,G. Van der Veken,Clemens J. M. Lasance,Martine Baelmans +5 more
TL;DR: In this article, the capability of a novel cooling system for microchannels based on the principle of electrowetting is examined, and based upon these results, the cooling capacity of the proposed system is theoretically investigated.
Journal ArticleDOI
Electrowetting-based microfluidic operations on rapid-manufactured devices for heat pipe applications
Renee S. Hale,Vaibhav Bahadur +1 more
TL;DR: In this article, an electrowetting heat pipe (EHP) can overcome the capillary limit to heat transport capacity and enable compact, planar, gravity-insensitive, and ultralow power consumption heat pipes that transport kiloWatt heat loads over extended distances.
References
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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.
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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.