Comments on: DIY Digital Microfluidics for Automating Biology Protocols (sub-microliter droplets)

By: JonathanCline

JonathanCline — Fri, 30 Oct 2009 03:03:28 +0000

In reply to Bruce. 1mm x 1mm pads with 0.5mm gap (or smaller). Though, tried a bunch of different combinations there. The pad size is related to droplet size ( 1 uL of water being well suited to 1.5mm pad size or so). Gap width should be minimized as much as possible without causing shorts or sparks. Sparking can be a big problem.

By: Bruce

Bruce — Thu, 30 Jul 2009 22:16:36 +0000

Jonathan, what are the pad and trace sizes you used as well as the gap between the pads?

Thanks, Bruce

By: Low Cost Microcontroller-based Digital Microfluidics using “Processing” - 88 Proof Synth Bio Blog

Thu, 02 Jul 2009 03:49:08 +0000

[…] now tested the digital microfluidics board via microcontroller. The digital microfluidics board moves a liquid droplet via Electrowetting-on-Dielectric (EWOD). The microcontroller switches the […]

By: JonathanCline

JonathanCline — Tue, 23 Jun 2009 23:22:05 +0000

Lou –
In the bottom picture, the droplet moves right to left.
The droplet can be any water solution. Also, water surrounded by oil also works in the research.

I will post another article with further details including circuit board layout files for easy fabrication.

By: Lou

Lou — Tue, 23 Jun 2009 17:38:50 +0000

Interesting subject..
In the picture you have 6 vertical electrodes ( horizontal spark gap brakes ), is the droplet of the fluid (blue droplet on the right) going to travel in the horizontal direction
when sequencing individual electrodes?
What fluids have you tested so far?
surface tension, viscosity challenges?
Thank you for yours comments.
Lou