Difference between revisions of "Elektrowetting"

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[http://pubs.rsc.org/en/Content/ArticleLanding/2012/LC/C2LC40273D#!divAbstract Article on AM-(TFT-)EWOD]
[http://pubs.rsc.org/en/Content/ArticleLanding/2012/LC/C2LC40273D#!divAbstract Article on AM-(TFT-)EWOD]
== Patents ==
[http://www.google.com/patents/EP2759342A2?cl=en AM-(TFT-)EWOD Patent]

Revision as of 22:52, 5 January 2015


  • Electrical charge of the surface changes the shape of water drops (before 1875)
  • Electrowetting is the modification of the wetting properties of a surface by applying different electric fields (1981)
  • "fluid transistor" for manipulating chemical and biological fluids (1980)
  • Electrowetting on this dielectric-coated surface, EWOD (1993)
  • Digital Microfluidic Circuits

What you need:

  • insulating dielectric and hydrophobic layers
  • immiscible fluids
  • DC or RF power
  • mass arrays of miniature interleaved electrodes (Indium tin oxide (ITO))
  • digital control
  • nano droplets

What you can do:

  • move droplets in linear, circular and directed paths
  • pump fluids
  • mix fluids
  • fill reservoirs
  • move droplets over sensors or heaters
  • control fluid flow electronically or optically

source: http://en.wikipedia.org/wiki/Electrowetting

Electrowetting TFT.png
Electrowetting_TFT [1]

DIY experiment

What you need:

  • ribbon cable
  • water, oil
  • high voltage (how high? Amperage? will 80v do?)

What you can do:

Electrowetting DIY setup.png

Bio Device

Electrowetting device sketch.jpg

Surface Coating

Electrowetting coating air.png

Electronic Control

Electrowetting electronics ref1.png Electrowetting electronics ref3.png

Electrowetting electronics ref2.png Electrowetting electronics ref4.png



On chip Sample preparation utilising EWOD Concept
DNA Lab on a Chip
Sandia Digital Microfluidic Hub
The Electrowetting Display
AM-(TFT-)EWOD Article on AM-(TFT-)EWOD


AM-(TFT-)EWOD Patent

1 Toward active-matrix lab-on-a-chip: programmable electrofluidic control enabled by arrayed oxide thin film transistors† Joo Hyon Noh, a Jiyong Noh, a Eric Kreit, b Jason Heikenfeld b and Philip D. Rack

2 Electrowetting: from basics to applications, Frieder Mugele 1,3 and Jean-Christophe Baret

3 Programmable large area digital microfluidic array with integrated droplet sensing for bioassays, B. Hadwen, a G. R. Broder, b D. Morganti, b A. Jacobs, a C. Brown, a J. R. Hector, a Y. Kubota c and H. Morgan* b