Elektrowetting
- 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) -
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:
