uFluid chip experiment

This is for a prototype microFluidic digital mixer.

For details about how these devices operate:

http://en.wikipedia.org/wiki/Digital_microfluidics
http://microfluidics.ee.duke.edu/
http://www.liquid-logic.com/technology.html

No clue if this is going to work yet. ABS is hydrophillic, this might change the implementation or require a catalyst to convert to hydrophobic. The included .scad let's you specify different PCB and dielectric thicknesses.

Ideas for bottom electrode:
PCB
Unicorn-drawn on holder with conductive pen

Ideas for dielectric:

Acrylic sheet
PCB
printed dielectric (thickness will be an issue here)

Ideas for top electrode:
Al foil
Sn foil
un-etched PCB
Unicorn-drawn on spacer with conductive pen