Difference between revisions of "Elektrowetting"

Revision as of 11:27, 1 December 2014

Introduction

• 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

DIY experiment

What you need:

• ribbon cable
• water, oil
• high voltage

What you can do:

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