Coulter Project Timeline

Chris and I visited the AJA sputter company in Boston last week.  The tool was fully functional and we were able to deposit several test wafers.  Overall, we were impressed with the performance.  The uniformity across a 6″ substrate was sub-1 %.  This is certainly a huge improvement over the 3-5% uniformity we currently achieve…

Wafer 612 was made to mimic wafer 504: 850 C RTP, cool down, 1000 C RTP.  Wafer 615 was annealed in two steps: first to 400 C and then to 1000 C (without inbetween cool down).  Both wafers showed a lower pinhole density.  Wafer 615 had a few “traditional” round pinholes.  Wafer 612 had some…

I ran the same 100K microcon system through numerous pressure ranges and put together the spread of hydraulic permeability results.These results show that the hydraulic permeability of the microcon membranes decrease with increasing pressure. Once I finished running the tests at these pressures I reran a test at 19.52psi (3800RPM) to see if we would…

The last post I made about the BSA/DDM separations using “treated” and “untreated” SC269 samples explained a problem I was having in which the initial retentate drop was diffusing around the edge of the sample chip. It seems that SC269 is naturally more hydrophillic than SC267 therefore when “treated” it becomes so hydrophillic that the…

Back a long time ago, I had performed some separations with the aim of showing the usefulness of pnc-Si in hemodialysis. I attempted separations of albumin (an important protein to be kept in the blood) and cytochrome c (used in hemodialysis research to cheaply approximate the toxic protein b2microglobulin) using three different membranes. Here is…

For context, see my previous post. Early on in the process of designing an experiment to confirm the usefulness of a CytoVu assembly for use as an assay, it was decided that the best solution for measuring the extremely low concentrations [ng/mL scale] of bacterial alkaline phosphatase (“bAP”) in the filtrate which would indicate what…