Similar Posts
Pore morphology is RTP time dependent (part II)
In the last production cycle, there were several wafers annealed for longer than our standard 1 minute RTP soak time. Recall in my earlier post, I observed a significant change in pore morphology in a 30 nm thick silicon membrane annealed at 1050 C for 1 min/5 min. In this series of experiments, we observe…
Cell Adhesion Study (on silanized surface)
We have seen before that silanization slows down discoloration and hence prevents membrane degradation. In Sepcon, the sample should last over a week. Further, it was necessary to check whether silanized surface supports normal cell growth. Therefore, comparison of cell adhesion on aminosilanized surface is made to control surface (non silanized). I took samples from…
Adsorption to polymer membranes
Previously we have studied protein adsorption to pnc-Si membranes by TEM and fluorescence. Neither of these methods will work with polymer membranes. Polymer membranes are too thick to view using TEM. Polymer membranes also autofluoresce creating a lot of noise while using our fluorescence method. Here I outline a new method of studying adsorption to…
"Separations" with pinholes
One question we recently had was what does it look like when we perform a separation experiment when a membrane has a pinhole. I selected two membranes off 621 that appeared to have pinholes on both slits. I applied 1:2 standards to the top and allowed to diffuse for 24 hours. I collected the retentate…
Microscopy on TEM Grids with Kevin Webb @ University of Nottingham
Dr. Webb is very interested in the thin nanomembranes that our group experiments with. To date, he has been trying to get cells to grow on SiN microporous material and image them with a few different types of microscopy (Phase, Confocal, Scanning Conductance Ion Microscopy). The cells have not grown well natively on the nitride…
First attempts at SepCon on 6-inch wafers
SiMPore has been collaborating with the Infotonics Center to scale our SepCon production to a 6-inch wafer. The wafers are patterned and deposited at their facility and then brought back to UR where we anneal and etch. This week, we etched several wafers and the initial results look promising. The big news is that we…