An important result of last weeks experiment showed that Antimony (Sb) doped substrates had no pinhole defects; however, Phosphorous doped substrates from the same batch had many very small pinholes. This agrees with a previous experiment: Antimony wafers have shown no pinhole formation. I propose a model that aims to explain:1) Why we are not…
(UPDATED with n=4) I’ve repeated the burst pressure experiments performed by Sabrina, with the 75 nm thick hemodialysis chips. The previous chips are 50 nm with a burst pressure of 1.5 psi (10.5 kPa). I found the burst pressure of the 75 nm chips to be 3.62 psi (25 kPa) n=4. Increasing the thickness 1.5 x lead…
Tom gave me a few samples to scan on the AFM. PVP was added to the well side of the samples. I scanned the pnc-Si side of the chips to see if/how the PVP came through the pores. Samples were from SC114. Two different areas of supported pnc-Si membrane on control (no PVP) chip: The…
I etched 12 pncSi chips and gave it to Chris for EA treatment. I wanted to test 3 storage conditions: gel pack, vacuum container, and water, for total of 4 days including the day of coating as day zero. Unfortunately I got the chips 3 days after the EA treatment, so the time points begin…
As a step to identifying the particles that I am capturing in my systems, I am attempting to do an immunogold labeling with a CD 63 primary antibody and a 10 nm gold conjugated secondary. It is possible to run this analysis in an SEM, but the best confirmation method is using a TEM and…
Xunzhi from the Shestopalov lab gave us a brief presentation on how XPS is used to assess surface modification of the nanoporous nitiride silicon (NPN) membrane chip. Power Point Presentation: surface assessment via XPS