TE membranes air permeability

So this is the latest iteration of the thumb-pump device we were working on this summer. As you will see in the diagrams, the idea is to ultimately have saliva go through a filtration step, with a side channel leading to a paper sink for excess/refuse pre-filtrate and a through channel. The latter channel leads…

In Tuesday’s NRG, we wondered if the fact that some of Josh’s pores overlap could throw the PoreImageProcessor off enough to explain a 2x discrepancy between our theoretical hydraulic permeability and our experimental permeability (the experimental was lower). From this picture: I took the following close up: If we assumer that each of the sub-pores has a radius of…

With some of the recent high porosity membranes being produced, I wanted to demonstrate that we can use ALD to create a movable cut-off without sacrificing too much in permeability. I took sc713 and coated it with 5 nm and 10 nm of Al2O3 i.e. I shrank the pore diameter by 5 and 10 nm….

As part of my thesis, I am trying to get a non-fouling pattern on a substrate which resembles our porous membranes to investigate cell behavior including cell adhesion and migration and to compare with our previous results which was obtained on porous membranes. This study can separate the role of pore edges and disrupted surface…

Before Anant left for India, we were doing cell adhesion studies with pnc-Si transwells and getting some weird morphologies.  Check it out here, here, here, here, here. This is in contrast with the 2D studies that Anant did for the cell culture paper in which cell adhesion looked good.  The main difference is the transwell…

Here is the full updated Adsorption Quantification figure: We were concerned that cellulose appeared to adsorb more than PES when the literature clearly states that it shouldn’t due to its hydrophilicity.  We considered that this same hydrophilicity might be part of the problem with our method.  Macroscopically, it appears that the protein solution applied to…