Journal Club for June 26

Some time before I noticed that placing the membrane in the metal deposition chamber at slight angle to the incoming metal atoms stream makes thin metal layer only on one side of the pore, shadowing the rest of it. Rotating the membrane sample after the metal layer was deposited on the front and making sure…

I have been working on the in-situ heating experiments on the free-standing membranes in the past few weeks. After quit a few times attempts I finally have some good videos made from the TEM images that were taken during the in-situ heating process. First I’ll introduce the background of these two videos including sample info,…

We haven’t talked much about the optical properties of pnc-Si, but I thought it would be good to share some of the index and dispersion data I’ve collected using the ellipsometer.  Below are plots of index of refraction (n) and extinction coefficient (k) vesus energy.  The index is a measure of the optical density.  The…

Scope: Human umbilical vein endothelial cells (HUVEC) and adipose derived stem cells (ADSC) were co-cultured on SiO2 low density 3um pore membranes. The ADSCs were initially seeded onto the membranes, at 6 hours the membranes were flipped over and placed into a 24 well plate and HUVECs were seeded. Cells were grown for 3 days…

Back a year or more ago, we had analyzed the EO flow rates from pnc-Si and determined that the flow was much higher than any other material.  We then went on to try to calculate the zeta potential using the Helmholtz-Smoluchowski equation: We figured out the velocity of the fluid, v, from our flow rate…