New wafers permeabilty and burst pressures data

Today while I was imaging a Al2O3 coated pnc-Si membrane on the high-res TEM, I noticed something curious as I placed the beam on a single pore for a few minutes. I was initially interested in the structure of the aluminum oxide coating, but found that something started to deposit on the pore walls as…

We have two cutoffs for the Millipore Biomax PES membranes: 50kD and 30kD.  I tested the “EO” rates for both of these membranes and plotted them in this figure with standard deviations (3 trials  of 50kD and 4 of 30kD). 50kD has a significantly higher rate of “electro-osmosis.”  I will try to compare these rates…

  Here is a graphical summary of the separation experiments performed the week of November 6th. Raw excel data is spread over 5 files: 11.4.14 qdot separations (10^13, 10^12, 10^11 Forward separations) 11.5.14 high conc reverse and forward (10^14 dots and IgG combination forward and reverse separations) 11.10.14 (retentate numbers for all separations) summarized qDot data (summary and graphs)…

We have recently been discussing the best way to analyze the diffusion and SepCon separation gels. In the following figures, I present line scans of the gels. These appear to be a bit noisy and are somewhat misaligned due to variations along the length of the gel. Blue = Control, Green = Retentate, Red =…

Adeel and I summarized our key takeaways from the BMES in this post. I personally tried to attend organ on a chip talks and posters, which included a micro- or nano-porous membrane or a micro/nano-structured co-culture system. I tried to identify weaknesses and strengths  to highlight our potential opportunities to contribute, and to improve our…

I have observed that in some cases the rate of EO can go up or down over the course of an experiment.  Often the initial burst in the first 5 minutes is high, then the rate may stabilize or drop.  I have observed that the rate of EO seems closely related to the current.  Here…