Cover Image, Volume 51, Issue 1


original image

In the advancement of polymer science, an exciting and developing field of microfluidics based on polymer materials is growing. As presented on page 59 by Michael Lee, Maria J. Lopez-Martinez, Abdellatif Baraket, Nadia Zine, Jaume Esteve, Jose A. Plaza, Nicole Jaffrezic-Renault, and Abdelhamid Errachid, the image depicts a negative-structured silicon micromixer fabricated by DRIE for passive mixing. The micromixer is used as the master mold for the production of PDMS replicas by softlithography and bonded to various APTES functionalized thermoplastic films (PI, PET, and PEN) with oxygen plasma treatments. Here, an optical microscope image of a section of mixing loops is exploited by alteration of the optical filters, with a variation of dark and white field illumination for a proposed emphasis of rapid mixing.