Since I’m now back pretty much full time on the filter project, I’ll give a quick update about where we stand and where I’m going with it, as well as some (negative) results from this week. On the membrane transfer side of things, we finally have a tool that can produce fine enough vapor…
Porous metal-organic framework (MOF) crystal is obtained by precipitation after mixing an aqueous solution of cadmium nitrate and the solution of 4,4’-bipyridine in anhydrous ethanol. It is found that the crystallization occurred when ethanol evaporated from the mixture. As a result, 4,4-bipyridine became supersaturated and complexed with Cd forming an infinite two-dimensional sheet as shown…
We’ve completed two successful 4-hour small animal hemodialysis experiments. I’ve also analysed the serum from all previous experiments. This graph shows only the recently analysed serum and doesn’t include the previously analyzed data. I’ll give a more detailed analysis of these results when we finish the next two animals, mid April. I’m in the midst of submitting…
I’ve been working hard on my model paper for a few months now. My first attempt at doing separations with Track Etched (TE) membranes, which are all 6um thick and come in pore sizes of either 30 nm or 50 nm, resulted in data that was all over the place: Note that the gold concentrations are…
Background Focal adhesions occur in 2D cell cultures as substrates apply large forces on cells. Previous experiments showed that focal adhesions formed on TCP and on non-porous SiO2 membranes but that less formed on 3.0µm-pore SiO2 porous membranes and even less on 0.5µm-pore SiO2 porous membranes. In other words, as area between pores decreased, formation…
We have previously observed some interesting transfer characteristics of our nanomembranes, using water vapor (breath) to delaminate and adhere them to glass and silicon nitride surfaces. Some membrane transfers do not appear to be stable (fragments or floats away when submerged and exposed to shear stress), while others can withstand shear stress at high rates…
Nair(Geim)Science12 Supplement Laminates of GO from 0.1 to 10 um thick on copper foil with an etched hole of 1 cm. Casually mentions >1.5 psi applied to materials < 1 um thick over 1 cm diameter hole. This seems to suggests a strong burst pressure but with no real data or experimental details, this is…
Please see the attachment: Crystal Growth inside Nanopores
In order to prevent membrane breaking, I rebored the acrylic plates for larger bolts and added compression springs to regulate the clamping force on the chips. I also flushed the devices at the vivarium where the animal experiments take place. There were still assembled in the basement lab but transported dry. I flowed IPA followed by…
The purpose of this post is to start a general discussion around the idea of using ultrathin silicon-based membranes and graphene oxide to improve Extracorporeal Liver Support, also called Artificial Liver Support (ALS) for patients with acute liver failure (ALF). What is Extracorporeal Liver Support? This is essentially the equivalent of renal dialysis for the liver….