The Long Road to Wearable Dialysis

A while ago I made a post about the permeability through the 100K microcons in the wet-wet EQ format. I had run three membranes, and stopped (and restarted) the centrifugation at three separate time points to be able to calculate three permeability values for each membrane. When I did this I got strange results; the…

At Nanotech I met a professor from Geneseo, K. Yokoyama, who worked with gold in sol-gels. He found he was able to dissolved gold in sodium tetra bromate (Na2Br4O7) without it aggregating. I have attempted to dissolve gold in other salts to no avail. This is an important step in testing membrane separations with gold,…

These experiments were conducted during the week of 5/10/2010 – 5/14/2010. To recap on this project, Barrett and I have been working with Dr. Harold Smith in the hopes of developing a drug screening test that consists of small-scale diffusions. In these experiments, we are working with APOBEC3G (A3G), a protein-RNA complex that is active…

In all of the below graphs, the x-axis has the same scale for easy comparison (-10 nm to 80 nm diameter). The Y-axis varies from plot to plot, but since we care more about pore density than actual numbers of pores, I have left these numbers out. Here is an example full plot with MATLAB’s…

Last week, I deposited silicon nitride/ amorphous silicon/ silicon nitride stack and then annealed the free standing stack after etching the substrate. The nitride film was deposited with 25W bias and the silicon film with 5W bias. The thickness for the nitride film is 30nm where it is 25nm for silicon.  One of the initial…

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…