In a first attempt to reduce the electrostatic drag that might be slowing water transport, I ran an experiment with 1x PBS. The membranes were first ozone treated and then assembled into the SepCon inserts.
From these first trials, it appears that PBS does pass through more quickly than DI water.
Hey, this will be a rather short post, but kind of important for the current work on my 5637 EV capture. While working over the break, I was messing around with capturing CFSE labeled 5637 EVs and I noticed that there were many large clusters on the membrane surface (Figure 1A). This was concerning to…
I took some copper tape and made a bus bar for BBB device V2-8. I used tweezers to smooth down the surface of the tape on each planar surface, routing the copper to the back side of each face, then collecting the lines to one side of the device. I verified that the connections…
In an attempt to push the cutoff higher, we annealed two wafers outside the susceptor at 1000 C (SC 066) and 1100 C (SC 067) with a ramp rate of 100 C/s. The 1100 C does give a cutoff slightly higher ~5 nm, but I’m not sure if this is within the variability in different…
Introduction We are investigating some issues seen with long term attachment (up to 6 days) of the EECM-BMEC-like cells seen by collaborators in Bern, where they noticed black aggregates on the coated control devices that get worse at day 6. Some attachment issues and aggregates have also been seen at the University of Rochester in…
Hi all, Sometimes for flow modeling I assume all pores to be identical in size. However, since larger pores allow much higher passage of flow, the above assumption will generally underestimate the prediction of flow. Presented here is a simple example, base on the following pore distribution (obtained from a SEM image): Assuming all…
These are the graphs with burst pressures for wafers 187, 189, 310, 312 and updated burst pressure bookMembrane_Burst_Book.xls The orange columns in the graphs indicate samples that I used for air permeability tests before.