Similar Posts
Ozone-treated PDMS: Contact Angles
As seen in prior NRG post, ozone treated samples recover over about 24 hours. However, recent experiments at Gaborski Lab show high variability when using the Corona wand to treat samples with ozone. The goal of this experiment was to determine the contact angles of PDMS samples when exposed to ozone treatment. PDMS samples were…
Bacterial Inflammatory Stimulation of the μSiM-BBB Model
Introduction Sepsis refers to an uncontrolled systemic inflammatory response which can result from bacterial blood infections. We have long been interested in developing a sepsis model using the μSiM-BBB platform because the neuroinflammation stemming from sepsis can cause severe BBB disruption. For the majority of our stimulation experiments we have relied on cytomix, a cocktail…
AFM of amorphous Si follow-up
Using fresh tips, I re-ran the scans of amorphous Si films deposited at different biases. Recall that our theory states that interface roughness between the Si/SiO2 is an important determinant for ultimate pore morphology. A rough interface will suppress nucleation, which is why we observe low porosity with zero bias. The 05 W condition decreases…
Pore vs. charge separations
This is a draft of a figure I think I’d like to use in my upcoming paper about charge based separations (this paper will include the Bernhard data). I thought I’d post it here first to get some feedback. I’ll first discuss the figure and then outline the problems that I see. Panel a. shows…
Water transport follows theory for alumina coated pnc-Si membranes
Today, I ran a quick experiment to confirm that water transport was not negatively affected by an aluminum oxide coating. I deposited 1.5 nm of Al2O3 onto a pnc-Si membrane which I then treated with an oxygen plasma in the YES system. I was curious to see whether the alumina coating along with O2 treatment…
Variation of TEER with finite area membrane
In my previous post, I mentioned the effects of varying electrode geometry on the TEER value measured from COMSOL simulations. I had assumed that membrane has uniform porosity i.e. 100% active area, which is the case with the commercial polymer membranes. pncSi and analogs, however, have only a a finite section of its total area…