The Mother Machine

In this page, you can find a complete blueprint and user's guide for the mother machine, a simple microfluidic continuous culture device developed in our lab. Already in the 1950s, the Copenhagen School of Bacterial Growth Physiology rigorously and quantitatively demonstrated the importance of the balanced-growth conditions in, among others, obtaining reproducible results. There is now a renewed interest in growth, especially by researchers coming from quantitative sciences, and our hope is that researchers in the field use the mother machine or other devices that ensure steady-state growth conditions in their experiments.

There are several advantages for using devices like the mother machine. (1) balanced-growth conditions are ensured (2) one can change/control the buffer conditions (3) high-throughput (we typically collect tens of millions of data points) (4) single-cell level observations (5) long-term observations (hundreds of generations) (6) compatible with your favorite optics/microscopy.

Mother Machine

Another reason for publishing the guide on the web is that we have seen many students and post-docs reinventing the wheels, especially when they just start to learn new things, because important details are not included in the literature. Have fun!

The reference can be found here and on our publication section. Files are here:

Complete data sets from Wang et al, Curr Biol 20, 1099-1103 (2010)
Note for the above data
The mother machine handbook (November 24, 2010)
L-EDIT file containing the mask design (2009 version)
AutoCAD (.gds format) version

Movies

A sample movie of a typical Mother Machine experiment.
James made a wonderful video!
A group of students in the San Diego area have been developing cheaper methods for microfluidics, and made two videos demonstrating. This shows how to make oxygen plasma cleaner under $500 (we paid about $10K).
This explains how to duplicate the mother machine using epoxy. It's really, really impressive.