Revision as of 11:49, 3 April 2022

Designing Microfluidic masks

Stanford microfluidics foundry has a good guide for designing your own device. That includes a guide to use AutoCAD.
AutoCAD (a program from Autodesk) is available free.
- Skolelisenser
- Elev og lærerlisenser

Some microfluidic circuit designs for a 3" wafer

You can use Klayout but we have more support for using Autocad.
Mask template for placing your designs
This guide for designing masks has some important tips
- All fluid pathways have to be inside one or more closed contour(s)
- The outer contour should be drawn in one layer (Give it a name like "Flow")
- Any obstacles inside this outer contour must be drawn in another layer. Give it a name like "Flow inner polygons")
Displaying your design as PDF or otherwise is not straight forward because the resolution needed. You get a fair impression using CloudConvert which is much better than AutoCads own pdf export.
Example of a design where white lines (in screen shot below, black lines in PDF) are contours containing flow and green lines are inner polygons. Here is a PDF version of the file and the DWG file.
Rounding corners on a region
- Command EXPLODE makes region into lines
- Command JOIN joins lines into polylines
- Command FILLET, downarrow to get options RADIUS and POLYLINE

@@ Line 4: / Line 4: @@
 ** [[Skolelisenser]]
 ** [[Elev og lærerlisenser]]
+[[File:Skjermbilde 2021-04-20 kl. 15.33.04.png|left|thumb|Some microfluidic circuit designs for a 3" wafer]]
 * You can use [https://www.klayout.de/ Klayout] but we have more support for using Autocad.
 * [https://www.mn.uio.no/fysikk/forskning/prosjekter/laglivlab/dokumenter/new-mask-template.dwg Mask template] for placing your designs
@@ Line 16: / Line 17: @@
 ** Command JOIN joins lines into polylines
 ** Command FILLET, downarrow to get options RADIUS and POLYLINE
-[[File:Skjermbilde 2021-04-20 kl. 15.33.04.png|left|thumb|Some microfluidic circuit designs for a 3" wafer]]
 = Photolithography =