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D. Puchberger-Enengl, C. Krutzler, F. Keplinger, M.J. Vellekoop:
"Rapid detection of bacteria by low-cost microfluidic system";
Talk: Smart Systems Integration (SSI) 2014, Wien; 2014-03-26 - 2014-03-27; in: "Smart Systems Integration", Apprimus Verlag, Aachen, (2014), ISBN: 978-3-86359-201-1; 323 - 328.

We present a microfluidic system for the rapid concentration and detection of
bacteria. The principle is based on electrophoretic enrichment of bacteria at a
hydrogel membrane between two big on-chip reservoirs. Prior to the injection of a
sample, bacterial cells are fluorescently labeled with a membrane permeant nucleic
acid stain. Fluorescence intensity detection is achieved by a low cost system
consisting of a diode laser for excitation and a Raspberry pi computer with an
included CMOS camera. Total numbers of bacteria can be determined within
minutes. The entire setup is compact, easy to handle and cost-efficient.