PhD Committee Meeting and Internship with Sartorius

This is a follow-up post to “Protein Assay Test.” I realized that I never posted the final stag of my experiments, in which I finally got BSA to go through the membranes. In “Protein Assay Test,” I described several experiments that I set up to see if I could get BSA to pass through a…

Adding pockets (250 micron long, 76 micron deep) to the bottom of the channel (channel is 500 microns wide, 125 deep) in a 4 layer PETL  (1 inch long chip) promotes disruption of laminar flow.

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…

In the soon to be submitted paper on diffusion models, we list two contributions to membrane resistance.  The first is due to the steric and frictional hindrance a molecule encounters as it enters and diffuses through a pore (Renkin, Deen).  The second is due to the time that it takes for the molecule to diffuse…