After doing all the water permeability with this wafer, I saved the samples to do some protein studies. When I write my own paper I will need two wafers to separate protein standards by diffusion and flow to show movable…
Category: NRG
Update on Anodic Bonding at RIT
Yesterday Henry and I went over to RIT to perform anodic bonding and parylene deposition using the new membrane configuration of W619 (with the etched trenches for our capillary tubing). I just wanted to post a summary of the process…
Wafers 620/621
Today I etched wafer 621, which is the pair to 620. While w620 has a relatively low pinhole density, w621 shows a much higher occurence of defects. Since the front-end processing and thermal treatment was identical for these wafers, I…
Posted in NRG
Water Permeability – Looking at the data
So I talked a bit with Philippe today about the water permeability data, and he suggested that I try to see if there’s a correlation between what the histogram looks like and the experimental permeability’s relation to the theory. I…
Posted in NRG
stir cell
Art is going to make a second stir cell this week. I asked him to replicate it as closely as possible, however I’m not sure how well that’s going to work. The one we currently have is made out of…
Posted in NRG
Chemical Stability of W613
W613, the wafer with 30 nm thick pnc-Si was tested for chemical stability. This wafer was shown to be very weak mechanically, with burst pressures less than 1 PSI. I tested this wafer for chemical stability with cells (fibroblasts, P26)…
Water Permeability
I’ve been working on trying to fill in some of the blanks of the permeability paper, and I’ve been fiddling with the water permeability data. I plotted the old water permeability data as a scatterplot, and while there looked like…
Posted in NRG
No success with UV Ozone Bonding at 100C with High Humidity
Following the advice of Dave and Chris I ran a UV Ozone bonding trial yesterday with the stage temperature set to 100C (instead of the usual 25C). The idea behind the elevated stage temperature is to drive off any water…
W613: Mechanical Testing
W613, the wafer with 30 nm thick pnc-Si that is oddly etched to form “H” shaped membranes, was tested for burst pressure and attempted to measure air permeability. When doing air permeability all samples broke, meaning are very weak. This…
W620: Mechanical Testing
The production crew recently delivered W620 to the lab, which was created to mimic W504 (and W612). W620 shows high burst pressure and has air permeability comparable to W504/612.
