Due to our desire to improve membrane stability in cell culture, different methods of treatment have been mentioned to try, including carbonization and silanization. W606 was treated with UV/ozone at 150C for 20 minutes, followed by silanization performed by some…
Category: NRG
Membrane Stability under various RTP Treatments: Retry
Previously W514 was tested with different RTP conditions (varying time at 800C, all in Ar); the results were difficult to interpret as the cells were confluent (in some cases it was hard to see membrane breakage). We therefore decided to…
HUVEC spreading on pncSi and glass
Following time lapse movies show the spreading of HUVECs on pncSi and glass ( @ 37C, in L15 media supplemented with 10% FBS) over a time period of ~4 hrs. HUVEC spreading on pncSi HUVEC spreading on glass
Diffusion Separation with w612
This was something I set up a few days ago and finally got a chance to run the gel. I was curious to try this after the previous forced separations using brain extract. If you recall, the “separation” using the…
Posted in NRG
Smith Lab Diffusion Studies
Harold Smith at the Med Center proposed an experiment for Jess and I to try, in which we use our membranes to separate proteins onto a PES, PVDF (Polyvinylidene fluoride) or Nitrocellulose membrane, similar to a Western Blot of DNA…
Posted in NRG
Chemical Stability of 30nm Samples with RTP Treatment
Previously I ran a chemical stability study of samples from W613, which has a 30 nm thick pnc-Si layer. In that study complete failure of untreated samples was observed by 18 hours in cell culture, which was not a significant…
Rhodamine diffusion profiles for non-rtp/rtp pncSi
Following images show the diffusion profile of rhodamine across pncSi as observed in the timelapse movies. Looking at the profiles no significant difference is observed between the non RTPed and RTPed samples. Non RTP sample: RTP sample:
15um Bead Flow through Closed Flow Cell
Based on the results obtained yesterday with the closed flow cell we reran another trial today. The closed flow system we tested today was bound using UV Ozone treatment, surprisingly this system created a relatively strong bond despite our resent…
Fibroblasts spreading on glass
I carried out another trial of spreading experiments and following time lapse movies show the spreading of fibroblasts on glass ( @ 37C, in L15 media supplemented with 10% FBS) over a time period of ~7 hrs. Fibroblast spreading on…
Wafer 620: porosity vs. position
We’ve been assuming that porosity follows a linear relationship with respect to wafer position, but this turns out to be incorrect. I imaged membranes from five points on wafer 620 and found that maximum porosity does not occur at the…
Posted in NRG
