The present invention relates to an in situ micromachined mixer for microfluidic analytical systems. In a preferred embodiment, a 100 pL mixer for liquids transported by electroosmotic flow (EOF) is described. Mixing was achieved in multiple intersecting channels with a bimodal width distribution and...http://www.google.de/patents/US6170981?utm_source=gb-gplus-sharePatent US6170981 - In situ micromachined mixer for microfluidic analytical systems