After a false start with non-microporous TEOS chips, I quickly did an image comparison with truly porous chips using polystyrene beads. The TEOS and Silicon Nitride chips were both fabricated in the single-well CytoVu format (single 2 mm window, 5.4mm die size). The TEOS chips allows water and media with serum to much more easily…
Dan Mendelson performed gold separations using wafer 255 and has shown that this wafer has a cutoff for gold near 25 nm. Below I have plotted the data of filtrate gold concentration as a function of the feed concentration for the three wafers we have tested. The bottom panel is a replot of the Malvern…
Motiviation and Background: Nakul and I have been performing a lot of DNA filtration and attempted DNA shearing experiments. We found that large DNA fragments (>1000 and >2000 bp) pass through ~30-40 nm max pore size membranes when pressurized to 10 psi (even in low salts). This is in contrast to the Bernhard data where…
