Capillary Tubing and Adapter
Just wanted to let everyone know that the fused silica capillary tubing and adapter needed to connect them to the pump tubing have been ordered and should be in hopefully by Friday (Monday at the latest).
Just wanted to let everyone know that the fused silica capillary tubing and adapter needed to connect them to the pump tubing have been ordered and should be in hopefully by Friday (Monday at the latest).
This is the first set of studies to assess the hemocompatibility of pncSi surfaces based on the paper by Fissell and Roy. It looks for the behavior of platelets in the plasma upon interaction with pncSi surfaces. Biological Motivation: Platelets are one of the most important components of the human immune system and also one…
This is a quick post on comparing the contact angle after ALD on pnc-Si with aluminum oxide vs the untreated material (+/- ozone). The hypothesis is that the angle should drop since Al2O3 is hygroscopic. The angles are 85°, 45°, 61°, and 50° for the untreated, ozone, Al2O3, and Al2O3 and ozone case, respectively. These…
A long running side story to my research has been attempted separations of nanogold. The basic idea is that we want to separate EM quality gold nanoparticles with the membrane, but I have had problems detecting gold in the filtrate with the zetasizer. We think this might be a result of the negatively charged gold…
W705 performed well in terms of permeability and separation of Hybrid Silica Nanoparticles. No water passed in the wet/dry format (no matter ozone or testing configuration – centrifugal or pressure cell). Reasonably high flow rates when tested in wet/wet configuration in the centrifuge. PVP enabled flow in the pressure cell in an otherwise wet/dry configuration….
This post offers an update on membrane fabrication through nanosphere lithography (NSL), describing in more detail the releasing step as well as the membrane integration into PDMS devices. Membrane lift-off is achieved by dissolving a ZnO film underneath the membrane. After fabrication the sample is immersed in 1M HCl solution. The figure below shows a…
I constructed a plot of hydraulic permeability based on the flow rates that Sterlitech has predicted for their membranes. Looking at the permeability values that I posted last week, outside the tested that appeared to leak, there was a 0.01um membrane with a permeability of 33.4, two 0.05um membranes with permeabilities of 59.9 and 71.1,…